SIMULATION OF CONTROL PLANT DYNAMIC
CHARACTERISTICS IN THE CASE OF HYDRAULIC
, Atanasko Tuneski
Faculty of Mechanical Engineering, "Sts. Cyril and Methodius" University,P.O. Box 464, 1001
Skopje, Republic of Macedonia. Fax: +389 2 362 298, e-mail:
A linear and nonlinear mathematical
model of hydraulic turbine, including water
supply conduit is proposed. Analysis of static and
dynamic characteristics of models is made.
Modification and analysis of both linear and
nonlinear model was made, using experimental
data from hydraulic turbine model acceptance
tests, with proposal of mathematical model which
has minimal error between simulation results and
static turbine model measurements. These
mathematical models can be used as control
plants in further control design tasks.
Hydraulic turbines, control, PID.
The requests of mathematical model of hydraulic
unrestricted head and tail race, large or no surge tank
and governor of hydraulic turbine are, to assure large
transient stability program simulation, isolated system
operation, system restoration after brake up, load
rejection, load acceptance, water hammer dynamics
and optimal speed control. In this paper are used for
simulation both linear and non-linear mathematical
models of hydraulic plants recommended by IEEE
and their modifications made with data from
hydraulic turbine model acceptance measurements
. Non-linear models are required where speed and
power changes are large, such as in islanding, load
rejection and system restoration studies although
there are great difficulties designing good governor of
hydraulic turbines, because the hydraulic turbine is
highly non-linear device which characteristics vary
significantly with the unpredictable load on the unit.
Such nonlinearities make the governor design a
nontrivial task because governors designed for one
operating condition may not work at all under other
conditions. Basic elements of a hydraulic turbine
within the power system environment are shown on
the block diagram of figure 1.
Block diagram of hydro prime mover and
2. MATHEMATICAL MODEL OF
Mathematical models of hydraulic turbine with
penstock and without surge tank, modelled assuming
incompressible fluid, recommended by IEEE ,
are presented. Modelling of linear and non-linear
mathematical model of hydraulic turbine is presented
in following subsections.
2.1 Non-linear model of hydraulic turbine
assuming incompressible flow
From the laws of momentum, the rate of change of
flow in the conduit is:
is the volumetric flow rate,
penstock length and
is the mass density of water.


Pressure Reducing Valves
The 790-01 Pressure Reducing/Pressure Regulating Valve is used to lower pipeline pressure to a predetermined set point, automatically controlling downstream pressure from no flow to full open flow, without regard to changes in inlet pressure. Outlet pressure control is smooth and precise since the friction and hysteresis of the valve and pilot is negligible.
The 100-42 Roll Seal acts as the main valve, which consists of only two parts: a stainless steel body, and an elastomeric liner or control element. The Cla-Val CRD Pressure Reducing Pilot Control controls the valve.


The project entails the design, construction and operation of a 44 MW hydropower facility on the Bandama river near the Singrobo and Ahouaty villages in Cote d’Ivoire. The project expects to generate 217 GWh of annual production and to operate with a load factor of 56%. The project responds to the government priority of diversifying the energy mix after a surge in recent years of thermal power production. The project increases the portion of renewable energy while improving the sector’s financial sustainability. The project comprises two main components: i) a main facility including main dam, water intake, spillway, power house and tail race channel; and ii) associated infrastructure comprising transmission lines and substation
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- Brass flow control valve
- 250psi Maximum operating pressure
- 0 to 180 degree F Operating temperature
- 420 scfm Maximum flow in metered direction and 615 maximum flow in free flow direction
- 3/4" NPTF port size
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Parker 032500519 3250 Series Brass Inline Flow Control Valve, 3/4" NPTF, 250 psi, Standard Adjustment
|Price:||$28.04 + $9.63 shipping|
|You Save:||$65.57 (70%)|
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Ships from and sold by Automation Recovery LLC.
Specifications for this item
|Number of Items||1|
|Maximum Pressure||250 PSI|
|LowerTemperature Range||0 Degrees Fahrenheit|
|Upper Temperature Range||180 Degrees Fahrenheit|
|System of Measurement||Inch|
|Manufacturer Series Number||3250 Series|
|Overall Length||3.56 inches|
|Pressure Flow Rate||420 Cubic Feet Per Minute|
The "3250" Series Flow Control Valves are specifically designed to accurately meter the flow of air in one direction and allow free flow in the opposite direction. The "3250" Series Flow Control Valves are also suitable for low pressure hydraulic service. Brass, stainless steel internal components, buna N seals. 420 scfm Maximum flow in metered direction and 615 maximum flow in free flow direction.
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« View county listFlood Warning
955 AM CDT FRI MAY 22 2015
The National Weather Service in Hastings...NE has issued a
* Flood Warning for
The Platte River Near Grand Island.
* from late tonight to late Monday night.....
* At 9:15 AM Friday the stage was 6.3 feet.
* Flood stage is 6.5 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage late tonight
and continue to rise to near 6.6 feet by tomorrow morning. The
river will remain above flood stage through at least Monday
morning. This warning covers a stretch of the river from roughly
Doniphan to Clarks...however the vast majority of flood issues
will be within about 5 river miles either side of the Highway 34
* At 6.5 feet...low lying areas adjacent to the river experience
most of the flooding.
Product corrected for type.
LAT...LON 4083 9839 4121 9782 4116 9782 4079 9833


Regional Water Quality Control Board, Region 5 (Central Valley), Sacramento
Upper Blue Lake Dam Seismic Retrofit Project
MND - Mitigated Negative Declaration
Pacific Gas & Electric Company (PG&E) is proposing to construct the Upper Blue Lake Dam Seismic Retrofit Project at Upper Blue Lake reservoir in Alpine County. A preliminary seismic slope stability evaluation of the dam that was conducted in 2014 indicated that the dam would likely liquefy during an earthquake. The proposed project would improve the seismic stability of the dam by placing a 50-ft wide by 175-ft long rock fill buttress on the upstream side of the Upper Blue Lake dam. The addition of the buttress would require an upstream extension of two low level outlet pipes by approx. 50 ft and reconfiguration of the intake structure and trash rack. The project area consists of the dam retrofit area, bypass piping, staging and parking areas, and spoils placement and storage areas.
Department of Fish and Wildlife, Region 2Cal FireCalifornia Department of Parks and RecreationCalifornia Energy CommissionCalifornia Public Utilities CommissionCaltrans, District 10Department of ConservationDepartment of Toxic Substances ControlDepartment of Water ResourcesNative American Heritage CommissionOffice of Historic PreservationResources AgencyState Lands CommissionState Water Resources Control Board, Division of Water Quality


A new sewer line project will be starting tomorrow on the South Hill. The 2.4 million dollar project will include a new 30" combined sewer in High Drive.
An 8-foot wide, paved pedestrian pathway will be added to the west side of the street. And the Underutilized on-street parking lanes will be removed on both sides of the road. Construction is starting tomorrow morning and is expected to be completed later this fall.
It’s been two months since the construction on Monroe street started. The good news is the project is ahead of schedule and has already reached the halfway point of the project.
The south half of the project has been completed, and the north side of the project is expected to be completed Monday. The project reduced Monroe from four lanes to two They have also widened sidewalks for local businesses. The completion date is scheduled for fall 2018.


GDh. Maavarulu Harbour Extension project was handed over to MTCC by Ministry of National Planning, Housing and Infrastructure on 16th September 2019.
Work being conducted under the project includes
EIA of the project was approved on 13th February 2020
The MVR 18.1M project is estimated to be completed within 150 days.


Author(s): G. Crispino; P. Contestabile; D. Vicinanza; M. Pfister; C. Gisonni
Linked Author(s): Michael Pfister, Gaetano Crispino, Corrado Gisonni
Keywords: Vortex drop shaft; Energy dissipation; Vortex flow; Swirling flow; Supercritical flow; Physical model
Abstract: The vortex drop shaft is a benchmark structure in hydraulic engineering. It is often used in sewers and hydropower systems, given that a significant energy dissipation combined with a reduced space occupation is achieved. Conversely, the flow pattern establishing along the structure may lead to the occurrence of unstable phenomena as vibrations, abrasion and choking, particularly if the operational conditions are different from the standard design regime. It is advantageous to study the overall hydraulic efficiency of the structure, and particularly to derive the hydraulic conditions of the swirling flow along the vertical shaft. At this regard, the paper describes a physically based approach, based on the momentum conservation, to derive the rotational angle and the velocity profiles along the shaft. The method requires the calibration of an empirical parameter accounting for the increase of the wall friction stress due to the centrifugal force. The outcomes of the application of the proposed procedure are presented with reference to the operation of two physical models of supercritical vortex drop shafts, with a tangential or a spiral inlet at the shaft top. It is shown that the application of the empirically-modified momentum approach is necessary for accounting for the significant angular momentum imparted to the swirling flow by the spiral inlet and for modelling the rotational flow distribution along the vertical shaft accurately.


Kathmandu, 11 August 2078. A tripartite memorandum of understanding (MoU) has been signed for loan investment in the 99.8 MW Tamakoshi Fifth Hydropower Project to be constructed in Dolakha. The MoU was signed between Nepal Electricity Authority, project promoter Tamakoshi Hydropower Company and Employees Provident Fund in the presence of Minister for Energy, Water Resources and Irrigation Pampha Bhusal on Sunday. NEA Executive Director Hitendra Dev Shakya, Chief Executive Officer of the company Nasivaman Pradhan and Fund Administrator Tulasi Prasad Gautam have signed the MoU.
The fund will invest 70 percent (about Rs. 11.33 billion) in the project with an estimated cost of Rs. 16.19 billion (US १३ 137.2 million). The remaining amount of the project being constructed under the People’s Hydropower Program will be raised from equity by issuing shares to the general public.
Tamakoshi V is the fifth 456 MW Upper Tamakoshi Cascade Project. Therefore, the project is considered attractive as there is no need to build structures such as Tamakoshi Panchale Dam, sand thawing pond (descender).
The gate required to send the water from the Upper Tamakoshi power house to the project tunnel has been connected. The project will have to construct 8 km tunnel, power house, about 2 km 220 kV transmission line and other main structures.
The project, which has received detailed design and environmental impact assessment (EIA) approval, has already received permission to generate electricity in May, 2074 BS. Further environmental studies of the project have been carried out with the grant of the Asian Infrastructure Investment Bank (AIIB) established under the leadership of China. Pre-construction works of the project are underway now. Work has been moved forward with the aim of completing the construction of the project by 2084 BS.


Engineered thermoplastic, impact and corrosion resistant discharge head and base
Pump shell constructed with a press and roll process for better performance
300 stainless steel pump and motor shell for maximum corrosion resistance, as well as shaft/coupling for greater power transfer
Home Water Systems
Rugged and reliable, Red Jacket’s Grizzly submersible pump is designed to exceed performance requirements in the most demanding applications.


KW series dredging pump is single stage single suction horizontal cantilevered centrifugal pump. Our company designs and researches this new type dredging pump by making full use of advanced CAD software, aiming to dredging river, lake and sea which is in great need to dredge in China. The use of this pump has remarkable comprehensive economic benefits and can meet dredging ship's requirements completely.
It is used for dredging and hydraulic fill.
● The whole construction is suitable for dredging ship.
①Reliable and simple structure (200KW~500KW type is single casing pump, 600KW~1000KW is double casing pump)
②Easy disassembly and installation, convenient maintenance
● Dredging performance is excellent
①good NPSH, strong through-put capability
②The curve of performance decrease sharply, to make the pump more adaptive in the change of discharge distance.
③Pump performance can be in a variety of change.
● Excellent ant-wear performance,long service of wet parts
● A little hydraulic loss,high efficiency,low consumption
● Reliable shaft sealing without leakage
200KW~500KW type usually adopts gland sealing or mechanical sealing or mechanical and packing compound sealing;600KWN~1000KWN adopts rubber sealing device
● Drive type:Generally use belt driven or Gear transmission
1. Operating Limits:
Wet end parts (Casings/liners,Impellers)
High chrome alloy (A05, A08, A09, A61……);
The material adopted is usually based on the detailed application, or could be according to the customer’s requirements.
3. Performance Chart
Series of dredging pump performance curve (only for primary model choice ) .
Note: Approximate clear water performance, and only used for primary model choice.
The casing gear box construction of 200-500KW dredging pump
1 Impeller 2 Pump casing 3 Throat bush 4 Back liner 5 Pump cover 6 Joint plate 7 Sealing box 8 Packing seal 9 Shaft 10 Gear box
The construction of 200-500KW dredging pump with bracket
1 Impeller 2 Pump casing 3 Throat bush 4 Back liner 5 Pump cover 6 Joint plate 7 Sealing box 8 Mechanical seal 9 Shaft 10 Bracket
The construction of 600-1000KW dredging pump with bracket
1 Pump casing 2 Volute liner 3 Shoulder ring 4 Big pump cover 5 Throat bush 6 Impeller 7 Suction liner tube 8 Impeller resistant wear ring 9 Small pump cover 10 Back liner 11 Resistant sand plate 12 Sealing box 13 “L” type rubber seal assy 14 Protecting ring of sealing box 15 Impeller release collar 16 Bearing housing 17 Shaft


Bank lends $200 million to Costa Rican hydro plant
The Inter-American Development Bank authorized a $200 million loan to the state-owned Costa Rican Institute of Electricity, ICE, for the construction of the Reventazón hydroelectric plant.
The project, valued at $1.2 billion, is expected to be completed by 2016 and will be the largest hydroelectric plant in Central America.
Once in operation, Reventazón will generate 1,400 gigawatts-hour per year, which translates to 10 percent of Costa Rica's total installed electricity generation capacity.
Full story (In Spanish)


CNEEC-Sinohydro Consortium, responsible for the development of the 700MW Zungeru hydroelectric power plant, has confirmed that the project is now 47% complete.
The deputy project manager, Xiao Nie, informed the media of this development during a tour to the $1.2 billion project site in Zungeru, Niger State, the Daily Trust reported.
Media noted that Zungeru hydroelectric power, made up of four units of 175MW each, was expected to be completed in 2020 following its launch in 2013.
Zungeru hydroelectric power plant
Nie is confident that the first phase of the project will be unveiled by December 2019 while the remaining units would be launched after every three months, media reported.
He said the project consists of a storage reservoir with a maximum operation water level of 230 metres, and total storage capacity of 11.4×109m3.
He added that the power project has an annual power generation of 2,640GWh, and is also expected to generate and supply electricity to the national grid.
“It [Zungeru hydroelectric power] will also be helpful for the flood control, the development of fisheries and agriculture. The navigable period and the length of the fairway will also be extended,” he said.
Hydropower generation developments
Recent developments around hydropower generation plants is on the rise in Nigeria. In June, the energy minister, Babatunde Raji Fashola, indicated that the 3,050MW Mambilla hydropower plant in Taraba State is still going ahead.
The minister stated to have received a ‘No Objection’ certificate from the Bureau of Public Procurement (BPP), which signifies that the ministry is ready to go forward and seek the Federal Executive Council’s (FEC) approval for the contract to be awarded. Read more…
The Mambilla hydropower plant has been on the cards for over two decades now and will be connected to three dams across the Donga River in the Taraba State.
Featured image source: 123rf


22 Oct Work on Hdh. Kulhudhuffushi Harbour Expansion Project is nearing completion
Work on Hdh. Kulhudhuffushi Harbour Expansion Project is nearing completion, with overall 98% project progress. Maintenance Dredging works for the project is currently ongoing, with 30% completion. The project is scheduled to be completed on 30 October 2020.
Scope of works for the project include harbor basin dredging operations of 236,844cbm; reclamation operations of 24,450cbm, construction of 500m in-situ concrete quay wall, a 500m in-situ concrete topping slab, backfilling of quay wall area, kerb stone casting & installation, drainage gutter casting and installation. The estimated value of the project is MVR 129,529 million. The project was mobilized on 26th December 2018.


WA Water Minister Mia Davies said the AU$2.3 million project would cater for growth in the area.
“The Water Corporation will carry out the project in two stages. The first stage of construction will begin at the existing Broome Street pump station and continue along Houston and Crawford streets,” she said.
“The second stage will take place at the intersection of Webberton Road and Anderson Street and will continue south along the Webberton Road future extension.
“This project will ensure the area has the necessary infrastructure to grow and develop in future.”
Ms Davies said work would be carried out within existing road reserves and would also take place along the future road reserve earmarked for the extension of Webberton Road.
The wastewater upgrade will be carried out by RCR Tomlinson, who bought Water Corporation’s Engineering and Construction Services team earlier this year for AU$10.4 million


|Home||» Products||» Primary Standards||» Hydraulic Pressure Balance|
We are engaged in manufacturing, supplying, trading and exporting a wide gamut of Hydraulic Pressure Balance in the market. These balances are designed by our team of experts using latest modern technology. These balances can measure pressure efficiently and accurately. These devices are ideal to be used to cater to on-site applications. Hydraulic Pressure Balance is widely used for testing, adjusting and calibrating various pressure measuring instruments.


Three gorges Dam
Three gorges Dam
The China Three Gorges Project (TGP) is of vital importance to the development and harnessing of the Yangtze River (Changjiang River). The dam site is situated at Sandouping of Yichang City, Hubei Province, about 40 km upstream from the existing Gezhouba Project in Yichang. This project has been discussed for over half a century.
TGP is the largest water conservation project in the world. With the normal pool level (NPL) at 175m, the total storage capacity of the reservoir is 39.3 billion m3. The construction period of the whole project will be 17 years, from 1993 to 2009. This project will bring many benefits to China including flood control, power generation, navigation improvement, etc.
The total static cost estimate of TGP is 90.09 billion RMB Yuan based on the price at the end of May 1993 while the dynamic cost of TGP will be 203.9 billion Yuan by rough estimate. Three gorge Dam , as the biggest project in China, now attract many customers from all over the world to sightsee the mystery in human being.
The monumental Three Gorges Dam is the biggest hydropower-complex project in the world, ranks as the key project for improvement and development of Yangtze River. The dam is located in the areas of Xilingxia gorge, one of the three gorges of the river, which will control a drainage area of 1 million km 2 , with an average annual runoff of 451 billion m3 . The open valley at the dam site, with hard and complete granite as the bedrock, has provided the favorable topographical and geological conditions for dam construction.
The dam wall is made of concrete and is about 2,309 metres (7,575 ft) long, and 101 metres (331 ft) high. The wall is 115 metres (377.3 ft) thick on the bottom and 40 metres (131.2 ft) thick on top. The project used 27,200,000 cubic metres (35,600,000 cu yd) of concrete, 463,000 tonnes of steel, enough to build 63 Eiffel Towers, and moved about 102,600,000 cubic metres (1.342E+8 cu yd) of earth.
When the water level is maximum at 175 metres (574 ft) over sea level (91 metres (299 ft) above river level) , the reservoir created by the Three Gorges Dam is about 660 kilometres (410 mi) in length and 1.12 kilometres (0.70 mi) in width on average, and contains 39.3 cu km (9.43 cubic miles) of water.The total surface area of the reservoir is 1045 km2. The reservoir will flood a total area of 632 km2 of land compared to the 1,350 km2 of reservoir created by the Itaipu Dam. The Three Gorges Dam reservoir is longer than the 560 kilometres (348 mi) length of Lake Superior, but only 1.1 % of the surface area of the lake (82,400 km2) and about 1/700 of the volume of the lake (28700 cu km).
Entrance fee: RMB240


Karot hydropower plant
The $1.65 billion Karot hydropower plant will be built on the Jhelum River near village Karot in Rawalpindi district. The proposed project site is 65 km from Rawalpindi city. The Karot hydropower plant is the first project finance from the Silk Road investment fund of $40bn. The construction of the 720 MW power project will begin in 2016, and the plant is expected to be operational in 2020. This plant will be developed by private Chines companies and will be handed overt to Pakistan government after 30 years.


Corps awards 2nd contract for Red River diversion project
Published 7:08 pm Friday, November 29, 2019
FARGO, N.D. — The U.S. Army Corps of Engineers has awarded its second contract for a Red River diversion project around the flood-prone Fargo and Moorhead metropolitan area.
The Corps announced Thursday that the more than $59 million project to build a flow control structure on the Wild Rice River will be built by Ames Construction Inc., based out of Burnsville.
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The concrete structure with two gates would be located about 7 miles south of the Fargo-Moorhead Area.
The first contract, for a control structure closer to the metro area, was awarded to Ames Construction in 2016 for about $46 million. That project was delayed over a lawsuit by upstream residents and changes in order to meet Minnesota permit requirements. Construction resumed earlier this year.
The $2.75 billion diversion is meant to provide flood protection for more than 230,000 people.


Local renewable energy developer Sunwest Water and Electric Co. Inc. (Suweco) is gearing up for the construction of two more hydropower projects within this year.
Suweco President Jose Silvestre Natividad told reporters that the company is looking to start the construction of a 60-megawatt (MW) hydropower plant in Peñablanca in Cagayan Valley and the 9.6-MW Villasiga 2 project within this year.
Suweco is planning to commence with the construction of the Villasiga 2 project in Antique by the end of the year in lieu of the Villasiga 1 project, which is up for completion within this year, Natividad said.
“Actually, within the end of the year, we’re going to start [constructing Villasiga 2 hydropower plant]if we can. We just have some activities to do,” Natividad said, adding that in order to fast track the construction of Villasiga 2, the company will utilize all the equipment used in the construction of Villasiga 1.
“There are already some activities going on there but full construction will still be first quarter next year,” Natividad added.
The P2-billion Villasiga 2 project is expected to be completed in 2017.
Moreover, Natividad said that the company is looking to start with the construction of a 6-MW hydropower plant in Peñablanca, Cagayan Valley.
“Actually we already started the construction of the access roads. That costs P1.1 billion. Also, hopefully in 2017, it will be operational,” Natividad said.


MDX Group of Thailand and the Hydroelectric Power Department of Myanmar have agreed to develop a major hydro power project on Myanmar's Thanlwin river in the southern part of Shan state
As part of the joint venture around US$6B will be invested into the construction of the 7110MW Ta Sang hydro power project, which is set to be completed within 15 years. Electricity generated from the plant will mainly be sold to Thailand with a certain amount supplied to areas in Myanmar free of charge.
In December last year, Myanmar and the Electricity Generating Authority of Thailand (EGAT) also signed an agreement to implement the Hutgyi hydro power project on Thanlwin river, in the eastern Kayin state. The Hutgyi project consists of a 600MW plant designed to produce 3.82BkWh yearly.


Owner: U.S. Department of the Interior, Bureau of Reclamation
Contract value: $35,469,300
The Mormon Island Dam is the largest zone fill earthen saddle dam at the Folsom Dam complex. Although the dam is founded on competent bedrock, the downstream toe rests on dredged alluvium up to 72 ft deep. Further exacerbating the poor foundation is the regional groundwater level which at times is just a few feet below the downstream ground surface. The scope of the current project includes constructing a 900 ft long by 55 ft wide by 40 ft deep lean concrete key block anchored 8 ft into the amphibolite schist bedrock. The concrete key block is then backfilled with select backfill up to the existing downstream grade. In order to reach the final foundation depths of up to 80 ft, Shimmick is constructing a design-build deep shoring system utilizing over 1,000 reinforced secant piles with up to 6 levels of internal bracing. The system is designed to withstand the full liquid head of groundwater, soil pressures, the weight of the existing dam and reservoir, and anticipated earthquake loads. In addition to the design and construction of the deep shoring, the project involves the excavation of 120,000 cubic yards of dredged alluvium and bedrock, processing of 60,000 cubic yards of concrete aggregate, onsite batching of 60,000 cubic yards of concrete, and placement of 60,000 cubic yards of compacted select backfill.


Test pumps serve as pressure generators for the testing, adjustment and calibration of mechanical and electronic pressure measuring instruments through comparative measurements. These units can be used in the laboratory or workshop, or on site at the measuring point.
By connecting the test item and a sufficiently accurate reference pressure measuring instrument to the test pump, the same pressure will act on both measuring instruments. By comparison of the two measured values at any given pressure value, a check of the accuracy and/or adjustment of the pressure measuring instrument under test can be carried out.
The model CPP1200-X comparison test pump is a hydraulic comparison test pump for generating pressure up to 1,200 bar (17,400 psi). It is technically identical to the instrument base of the model CPB3800 pressure balance. The integrated dual-area spindle pump with switching valves enables rapid filling of the test system and smooth pressure generation.
At the same time, the precisely adjustable spindle pump also serves for pressure fine adjustment. A control schematic for pressure generation on the instrument base facilitates quick and easy operation. The two test connections are equipped with G ½ female loose union connections. Corresponding thread adapters are available for the calibration of instruments with different connection threads.
Compact instrument design
The CPP1200-X is also particularly notable for its compact dimensions, which are not altered during operation, since the spindle runs within the pump body. With those dimensions, the exceptionally robust ABS plastic housing and the low weight associated with these, the CPP1200-X is also particularly suited for on-site applications.


Rough River Lake, Ky. – Rains during the past 24 hours have caused Rough River Lake to reach a record high pool. As part of the projects water control plan, gate operations will be initiated today. Releases through the emergency spillway are expected to begin later today. The dam is structurally sound. The release is part of the original project design and lake management.
Residents downstream from these projects will see greater amounts of release through the spillways since the lake project has gone into operation. This means stream levels may be impacted by the releases and increase the current levels below the dam.
The spillway is designed to provide a safe path for the excess flows. Then, water from the spillway re-enters downstream of the dam. Water releases are managed by Corps’ hydrology and hydraulics departments in concert with other government agencies.
The Corps coordinates with local, state and other emergency management agencies and officials to share information on current conditions at its reservoirs.
Lake levels and other information for Corps lakes can be found at this web address: http://www.lrl.usace.army.mil/opto.
To monitor real time lake level information please visit the USGS web site at:
Note: A news conference will be held 2:30 p.m. EST today at Rough River Lake to discuss releases through the emergency spillway.
Release no. 11-011


The US Bureau of Reclamation has awarded Andritz Hydro a $6.82 million contract to modernise and overhaul the last three original pressure relief valves at Hoover Dam.
Beginning in October 2017, construction crews monitored by USBR’s Lower Colorado Region will begin the process of disassembling the first of the three remaining pressure relief valves at Hoover Dam and refurbishing the units with new valves and related componentry – which will include installation of new valve head covers and hydraulic actuators.
Conversion and overhaul of the existing valves at Hoover Dam with installation of the new componentry is expected to be completed over the next three years when maintenance schedules allow. The rehabilitation work, like all operations and maintenance work at Hoover Dam, is funded by the dam's power customers.
"Ensuring the safety and reliability of Reclamation dams to protect the downstream public is a top priority for Reclamation," Commissioner Estevan López said today. "The new pressure relief valves will help to protect the life of the dam’s four penstocks.”


The Flood Warning continues for
the Kentucky River near Ravenna.
* At 2:15 PM Sunday the stage was 21.1 feet.
* Flood stage is 21.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast... the river will continue rising to a crest near 22.5 feet
tonight. The river will fall below flood stage tomorrow afternoon or
* At 21.5 feet... Sang branch Road is under water at Red Lick creek.
Lat... Lon 3788 8405 3769 8385 3763 8392 3779 8411
Severe Weather Get Mobile & Email Alerts
Estill Severe Watches & Warnings NOAA Weather Radio
Watches & Warnings
Issued: 3:13 PM EST Dec. 16, 2018 – National Weather Service


Stormwater Drainage Improvements
Town of Knightdale
McAdams was retained by the Town of Knightdale to design an alternative drainage system for the existing rip-rap channels that currently convey offsite stormwater through the site. In addition to replacement of the channels, the scope of the project included revisions to the existing drainage system around the tennis courts within the park to correct deficiencies that currently exist. McAdams obtained concurrence from the Corps of Engineers and NC Division of Water Resources; no permitting was required (wetland, stream, or riparian buffer) for construction of the project. McAdams prepared two design alternative pipes on all of the on-site channel areas to pipe the upstream channel areas, leaving one section of rip-rap channel in place.
This second alternative was prepared to both reduce costs from import of fill material and to save a significant number of existing trees that would be lost during the placement of fill for piping in the downstream section of the channel. Cost estimates were prepared, as well as preliminary level construction documents for the project.


4423690 Thieman 4-Way Drain Valve with Coil FMF7132
Thieman 4423690 replacement 4-Way Drain Valve with 1-wire solenoid coil. High flow with screens. FMF7132 from NLP Parts.
- Combines FMF7132-0 + FMF7132-1
- Valve Length -- 4 inches.
For control of hydraulic fluid from manifold of liftgate power unit. Valve and Coil are available separately.


This centrifugal type Paper Pulp Pump is suitable for low pressure application purpose. Made of stainless steel or cast iron, this precisely designed pumping system is known for its energy efficient standard. It is used for conveying high temperature fluid which is devoid of any solid particles. Operating temperature of this Paper Pulp Pump varies as per material type of this equipment. It consists of standard accessories like suction port, stator, drawbar, discharge port, coupling, drive shaft and shaft sleeve.


Climatic model of the river runoff with 1/3 degree resolution is presented in the paper. The model is the linear reservoir model i.e., each cell in the model is the reservoir or the cascade of the reservoirs. The speed of the output from the cell is depended linearly of the input to the cell and the slope of the cell and inversely proportional to distance between the cells. The flow is separated into the surface flow, river runoff, and ground flow, which is determined in accordance with the ground surface model. Siberian region in the model is divided to eight watersheds, which include Ob–Irtysh, Pur, Yenisei, Lena, Anadyr, Indigirka, Kolyma, Amur. Data of the NCEP/NCAR reanalysis was used for the numerical modeling for the Ob–Irtysh watershed in the Western Siberia. The control data about the river discharge was taken from results of measurements on the hydrological station Ob-Salechard.
mathematical modeling, climatic river runoff, Ob river basin


Cement Grout Flow Testing
Grout Flow Cone Set
Test set for measuring the flow of grout for preplaced, aggregate concrete
Grout Flow Cone
Cast-aluminum flow cone with either 0.5" (13mm) or 0.75" (19mm) replaceable orifice.
Cardboard box designed to be used to mold grout test samples.
Get your FREE
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KATHMANDU, April 8: The Upper Tamakoshi Hydroelectric Project is all set to go into the testing of electricity production in the next two weeks with the project reaching near the final stage of construction work.
According to Nepal Electricity Authority (NEA), the project is targeted to complete construction by April 23. “The main tunnel and penstock pipe of the power plant will be filled with water on April 24 for the trial production if everything goes as planned,” said NEA’s executive director Hitendra Dev Shakya.
Currently, the work of installing a penstock pipe that connects the lower tunnel and the upper tunnel of the power house is underway. The contractor of the Lot-2 hydro mechanical work is reported to be completing its work by April 19. Following the completion of the hydro mechanical work, the project will conduct technical testing of gate, manhole and valves.
The hydroelectric project has planned to operate its underground fitted six turbines and six generators to produce electricity from the first unit by mid-May. The project consists of six units each with capacity of producing 76 MW of electricity.
The 456 MW national pride project is being constructed with domestic investment. The total cost estimated till the completion of the project will be around Rs 76 billion, according to the NEA.


Motor brakes & valve blocks
Wide range of motor-brakes, hydraulic brakes, valve blocks and accessories.
- Hydraulic brakes static torque from 20 to 5665 dNm, opening pressures from 4-300 bar
- Relief valves KP-series, single and dual relief valves
- Overcenter valves KPB-series, with brake control KPB-series, single and dual valves
- Switch valves KPW-series


Lower Durant Park Lake Dam & Spillway
- Lake & Dam Rehabilitation
- Approximately $575,000
- Stormwater Management (Lead)
- Schnabel Engineering
- City of Raleigh-Parks, Rec. & Cultural Resource Department
Posted Friday, Dec. 8
Final design for this project is currently underway. The construction bid for this project will take place in spring 2018.
Note: Construction is expected to begin in fall 2018 so that work at Lower Durant Lake does not impact park programs and access to the greenway.
A dam/spillway condition assessment for this project was completed by the project consultant, Schnabel Engineering, to determine dam safety issues that need to be addressed, including energy dissipater analysis for chute spillway, inspection of low level outlet, and slope stability analysis of the dam.
This project is being completed in partnership with the Stormwater Management Division and and Parks, Recreation & Cultural Resources Department.
|2014||Preliminary evaluation of dam safety issues complete|
|Fall 2017||Final project design complete|
|Spring 2018||Construction bid advertisement complete|
|Fall 2018||Construction begins|
|Winter 2019||Construction complete|
This project is being completed to make sure that the Lower Durant Park Lake dam and spillway are in compliance with current Dam Safety requirements.


The CHTC/CH type high-pressure boiler feed water pump (power plant) is a second generation boiler pump and represents the most advanced pump technology of KSB Group.
This pump is an amazing combination of efficiency and reliability. It can handle constant pressure during operation without worry. The pump was designed with practical safety and maintenance reduction features, making it the ideal choice for any boiler installation.
- Advanced modular design with interchangeable components for minimal downtime and simple maintenance.
- Fast assembly and disassembly, facilitating simple replacement of sealing, bearing and balancing components without removing the pump body and the inlet/outlet pipelines.
- A combination of high efficiency, high reliability and low cost.
- Best fit between the impeller and guide vane, the HG type high-pressure multi-stage centrifugal pump can maintain high stability and operation efficiency even after a long-term operation.
- The excellent hydraulic impeller model or special double-entry impeller structure remove the need for additional booster pumps or raised water height.


Center Hill historical marker dedicated
Tennessee State Rep. Terri Lynn Weaver, District 40, speaks at a historical marker dedication ceremony at Center Hill Dam in Lancaster, Tenn., Oct. 27, 2015. The Center Hill Dam is located on the Caney Fork River and is one of the multipurpose projects that make up the Corps of Engineers’ system for development of the water resources of the Cumberland River Basin. The dam and Lake was authorized by the Flood Control Act of 1938 and the River and Harbor Act of 1946. The project was completed for flood control in 1948. Three power generating units provide a total hydroelectric capability of 135,000 kilowatts.


Featuring a stainless steel pump body & forced-air cooling motor, this electric clean water pump is ideal for irrigating the garden. It includes a 12 month warranty!
This unit has a marine grade motor housing, and robust stainless steel pump body to last years of service. This compact unit is suitable for indoor/weather protected use for general household supply, water transfer, pressure boosting(Not water from ponds, lakes, rivers etc). Able to pump 35 litres per minute this pump is designed for pumping clean tank water which is connected to a system where the water flow is controlled with a tap.
Some 1000 watt power draining monsters not only pump up plenty of water but they also pump up your electricity bill! At 370 watts this pump is much, much cheaper to run and will still pump plenty of tank water for garden irrigation needs.
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Solar Powered Submersible Water Pump Kit for Garden
Solar Powered Pumpman Submersible Bore Water Pump
5 Stage High Pressure Auto Garden Water Pump 1800W
Electric Submersible Dirty Water Pump 7500 L/h
Fully Automatic Macerator Disposal Pump Unit - 600W
SP Tools Rotary Geared Drum Pump w/ Non-Drip Nozzle
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Sumitomo QX23-005/23-005R08 Hydraulic Pump
Designed for high pressure service, the Sumitomo QX23-005/23-005R08 is a brushless wheel motor pump with enclosed rotor and gearbox, an oil-lubricated radial shaft, and an integral pump drive.
The Sumitomo QX23-005/23-005R08 Hydraulic Pump is a high performance pump designed to move fluids at high pressure and with low torque. This pump is perfect for pumping heavy liquids through pipes and hoses, so it’s often used in industries such as oil refineries, chemical plants and food processing.
1) This pump is proven to reach the maximum pressure of its class with a high efficiency. It can also reach higher pressures by changing the number of nozzles and adjusting the shaft speed.
2) The pump is a highly efficient, high-performance pump that can be used in all types of applications.
3) The Sumitomo QX23-005/23-005R08 Hydraulic Pump produces 3.2MPa hydraulic pressure which is twice as much as the 2.0MPa of other pumps on the market.
4) Reduce the cost of hydraulic pump maintenance by up to 20% with a new long-life design.
5) Offers a variety of features that are unavailable in any other pump and is highly customizable.
6) Professional-grade reliability with a built-in power saving feature.
7) Increase production efficiency, reduce maintenance costs.
Sumitomo QX23-005/23-005R08 Hydraulic Pump Datasheet
|Applicable||Flange Block Bearings|
|Max Pressure||4 Bolt Round Flange Cartridge|
|Cross Code||Spherical Roller Bearing|
|Maximum Flow Rate||Non-expansion|
|Dimension(L*W*H)||Triple Lip Nitrile Rubber|
|Install||1 Piece Solid|


Hutchinson Water International Holdings (HWL)
Description for Kokhav Hayarden (Israel)
- Upper Dam (Earthfill, H = 25 m, L = 1.8 km, Vol. = 1.5 Mm3, Live Storage = 3.1 Mm3)
- Lower Dam (Rockfill w. concrete facing, H = 18 m, L = 1.7 km, Vol. = 0.2 Mm2, Live Storage = 2.8 Mm3)
- Headrace tunnel (L = 755 m, D = 5.5 m, Concrete Lining)
- Upper Surge Shaft (H = 48 m, D = 14 m)
- Penstock (H = 670 m, D = 4 m)
- Underground Power House (N°2 Francis turbines, IP = 300 MW)
- Tailrace Tunnel (L = 1.6 km, D = 5.5 m)
Namakhvani Cascade (Georgia)
Namakhvani HPP Cascade, includes the construction of three hydropower schemes...
Simbirizzi (Settimo S. Pietro) is a small hydroelectric plant to supply the...
Multi-purpose project on Lake Tana, including hydropower plant and irrigation...
Storage works for Famagusta urban water supply.
Enguri Cascade (Georgia)
ENGURI HPP Cascade envisages the construction of three hydropower plants on...
Montedoglio dam has suffered some damages at the spillway and dam body due to...
Bagré (Burkina Faso)
Bagré multipurpose scheme was built in 1993 and is located along Nakambé...
Kabuyanda is a multipurpose dam envisaged for agriculture (paddy rice and...
Dabus HPP cascade is located on the Dabus river, a north-flowing tributary of...


Mississippi River and Tributaries Flowline Assessment Hydraulics Report
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS VICKSBURG
Pagination or Media Count:
This report documents the development of the model for the Mississippi River and Tributaries Flowline Assessment using the Hydrologic Engineering Center - River Analysis System model unsteady, version 5.0.1 completed by the U.S. Army Engineer District, Memphis the U.S. Army Engineer District, Vicksburg the U.S. Army Engineer District, New Orleans and the U.S. Army Engineer Research and Development Center, Vicksburg, MS. The 2011 Mississippi River flood was chosen as the primary event for calibration, and the model performance was checked for 2002 and 2008, two other recent high-flow events. The model from this effort was used for two simulations of historic project design flows PDFs, here labeled Historic PDF - Existing Yazoo and Historic PDF - Authorized Yazoo. The combined model was also used for 10 new hypothetical project design flows. Additionally, the model was used for one alternative scenario, labeled Concept Plan. Future sea level rise was also implemented with the Concept Plan and the New Hypo 58A-R PDF simulations.
- Hydrology, Limnology and Potamology
- Civil Engineering


Hungry Horse Dam
The Hungry Horse Dam project includes the dam, reservoir, powerplant, and switchyard. At the time of its completion the dam was the third largest dam, and the second highest concrete dam, in the world. The project plays an important role for meeting the power needs in the Pacific Northwest and flood risk management. It also contributes to other uses including irrigation and navigation.
- Stream: South Fork (SF) of Flathead River
- Location: Hungry Horse, Montana
- Owner: Bureau of Reclamation, Pacific Northwest Region
- Purposes: Flood Risk Management, Irrigation, and Navigation
- Active Capacity: 3,467,179 acre-feet at pool elevation 3,560 feet
- Hungry Horse
- Completed: 1948-1953
- Height: 564 feet
- Crest Length: 2,115 feet
- Dam Type: Concrete Arch
- Features: powerhouse, spillway
- Spillway (type/capacity all at pool elevation 3,565 feet): Gated Morning Glory Spillway / 50,000 cfs; hollow-jet valves / 14,000 cfs
Flood Risk Management Operations
From January through June, the reservoir level is adjusted for flood risk management space requirements. The amount of reservoir draft or space is dependent on inflow forecasts. The objective of the flood risk management season is to provide enough space in the reservoir for system flood risk management operations in the lower Columbia River, and also to provide local flood protection in the mainstem Flathead River near Columbia Falls, Montana.
Operations for Fish
Hungry Horse Dam is operated to augment flows in the spring,from April to June, to aid spring anadromous fish migrating in the lower Columbia River. From July through September, the project is operated to balance reservoir storage to meet local and downstream fish needs. The reservoir is drafted to supplement flows for juvenile anadromous fish migration in the lower Columbia River, but timing and limit of the draft are also intended to benefit resident fish. Flows from the reservoir are maintained year round to preserve fish habitat in the river below the dam.
Annual maintenance on dam outlet works, spill structures, power plants, etc. is necessary for continued operations. Periodically, extraordinary maintenance activities are necessary to safely operate the project. An example of extraordinary maintenance at Hungry Horse Dam is the modernization of the power plant.


Large Eddy Simulation (LES) turbulence and multiphase Volume of Fluid (VOF) model are employed to predict the spatial and temporal characteristics of the turbulent flow structures near micro-hydrokinetic turbine operating in the proximity of a free surface. The turbine power performance and the free surface dynamics, and its interaction with the turbine are characterized by examining the results of both single-phase and multiphase flow simulations. Simulations are conducted at the turbine’s best efficiency point at a tip speed ratio of 1.86 with the rotation rate of 150 rpm and the free stream water velocity of 2.25 m/s. The multiphase flow simulation is carried out at Froude number of 1.06. The results indicate slight interaction between the deformed free surface and the turbine wake structures. Acceleration in the flow velocity is observed near the free surface due to the physical confinement. The results indicate that turbine power generation is reduced by about 2.0%, and the thrust coefficient is reduced by 1.60%. It is demonstrated that the turbine performance at this Froude number is hardly influenced by the presence of the free surface.


Client: NC Division of Mitigation Services
Location: Union County, NC
Wildlands is developing a full-delivery project in rural Union County on Norkett Branch and four tributaries. The project will provide 10,098 stream mitigation units for the NC Division of Mitigation Services. The project includes existing site assessment, conservation easement acquisition, permitting, stream restoration design, construction, and seven years of post-construction monitoring of geomorphic stability and vegetation. Detailed hydraulic modeling has been completed for both CLOMR and LOMR approvals. Two stormwater BMPs were being constructed to treat headwater agricultural runoff and provide SMU credit. Land Mechanic Designs, Inc. completed construction of the project in April 2014. The project is currently in the monitoring phase.


Requests for explanations on the design and operation of certain flow instruments are very common. Except for custom-built devices, most instruments are now described in Youtube or Vimeo videos. Here are a few examples.
Vortex Flow Meters
Coriolis Flow Meters
Ultrasonic Flow Meters
Thermal Flow Measurement
Doppler/Correlation Flow Measurement
Differential Pressure Flow Measurement
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Construction of 100’ wide concrete platform built up with R-4 rip-rap and construction of concrete guide walls and tanks for construction of concrete cut-off wall 2,000’ in length and up to 250’ in depth. Construction of clean fill storage ponds and handling and disposal of trench spoils and slurry. Permanent road construction on dam crest.
- Importation of 300,000 CY of R-4 rock
- 6,700 CY of concrete for guide walls and platform
- 170,000 LBS. Reinforcement Bars
- Disposal of 100,000 yards of cut-off wall trench spoils
- 35,000 CY of R-6 rock


On Flir Ex Series Cameras
Series MTF Multitube Flow System, 150 mm frame, isolated pattern, 3 tube capacity, aluminum
Customize flow systems to meet application requirements. Systems can be configured with up to six different flow tubes with various flow capacities and flow patterns. The Series MTF Multitube Flow Systems are ideal for multichannel metering, mixing, or monitoring applications.
** This item is BRAND NEW – not refurbished.


Pubugou Hydropower Station
Pubugou - The highest rockfill dam with debris core on very thick overburden under construction in China
- Control reservoir for whole Dadu River basin
Pubugou hydropower station is located on the middle reach of Dadu River in Hanyuan and Ganluo in Sichuan Province, and the catchment area makes up 88.5% of whole Dadu River basin. It is a multi-purpose project for power generation, cascade balancing, flood control and sediment retaining. The total installed capacity is 3600 MW, rockfill dam height is 186m, firm output is 926MW, and annual average power output is 14580GWh. PUBUGOU is the national key project under “the tenth-5-year-plan” policy in China. The first unit of the project was commenced in October 2002, and river closure was completed on November 22, 2005. The first unit was put into commission in December 2009, and by the end of 2010, all 6 units were put into operation.
Yele Hydropower Station
Rock-fill dam height: 125.5m, the highest rock-fill dam with asphaltic concrete core on very thick overburden in China, completed in 2005.
Scope of Work: Reconnaissance & Survey and feasibility study, engineering, construction supervision
Shuangjiangkou Hydropower Station
Shuangjiangkou, rock-fill dam with height 322m one of the highest dam in the world. Reconnaissance and feasibility study, engineering, construction supervision


Jenny J11H - Dewatering Submersible Verticle Pump
The Jenny J11H is a new pump model in our dewatering verticle submersible pump range, it slots in perfectly between the new design J4 and J22. The design of this pump allowes for clean and dirty water applications where small particle may be present.
Performance Technical chart for the Jenny J11H 11kw
Test Data: Medium Water @ 20 degrees Celcius, 0.9983kg/dm3, Altitude 1600m above sea level
Tolerances according ISO 9906 Annex A


American Controls also stocks a line of ORBINOX 316ss tilting disc check valves (other material available on special request). These valves are ...American Controls Technology, Inc.
A foot valve consists of a standard check valve with a filter which is mounted in front. Foot valves are generally used for the intake of liquids; ...Fergo Armaturen Gmbh
Product Name: Check Valve Model No: bdv708 Check Valves, Bronze Check Valves, Brass Check Valves forged steel check valve, brass valve, wafer type ...Taizhou Bada Valve Co. Limited
sending enquiry ....


This project consisted of a complete replacement of existing concrete spillway with embankment modifications.The existing spillway was 60’ wide ogee weir with sloped spillway walls. The new construction consisted of up to 36’ high battered concrete walls, 240’ of 14’ high weir walls. A total of 3700 CY of concrete was placed on this project.
Along with a 900’ long parapet wall to raise the crest of the dam, the embankment was modified with a new toe drain. Additional work included extending the conduit 75’ to allow the new embankment to be flattened to a 3:1 slope. This activity required establishing a borrow on site for the 35,000 CY earthfill placement.
As with any dam project, control of water is a major concern with DEP Dam Safety. This lake was drained prior to construction. However, inflows from rain events quickly raised the level of the basin. Being prepared and planning for these events was key to success on the project.


Isabella Dam’s Repair Gets OK
The U.S. Army Corps of Engineers is finally ready to move ahead with detailed engineering design of a large safety modification program at Isabella Dam northeast of Bakersfield.
A record of decision and dam safety modification report were approved by Corps management. They will ultimately permit the agency to award construction contracts.
The work is to resolve a potential dam overtopping problem by raising crests of the main and auxiliary dams 16 feet, improving an existing spillway, and building a new 900-foot spillway along with a new upstream berm and foundation treatments.
Seismic issues are also to be addressed. Costs could range up to $600 million.


Laos plans to build a new 684 MW hydropower plant on the Mekong river. The Sanakham dam project willbe built by DatangSanakham Hydropower, an affiliate of Chinese state-owned power producer Datang International Power, at an estimated cost of $2.1 billion. Laos has submitted plans to the Mekong River Commission (MRC), which will give an advisory opinion. MRC members including Thailand, Cambodia and Vietnam will assess the project and review any cross-border impact. The consultation process is expected to take six months, while construction work on the project may start by end-2020. The project is expected to be commissioned in 2028.


Oromia region - Ethiopia
Salini Costruttori S.p.A.
2008 – 2009
Description for Gibe V (Ethiopia)
Gibe V is the fifth stage of the Gibe-Omo hydroelectric cascade which includes Gilgel Gibe, Gibe II (operating), Gibe III (under completion) and Gibe IV (planned).
- RCC Gravity Dam (H = 78 m, L_crest = 580 m)
- Spillway on dam body (N° 10 gates, W x H 12x19 m)
- River Diversion Works (No. 2 culverts, D = 12 m, L = 240 m)
- Cofferdam (H = 20 m, L = 240 m , rockfill with internal membrane)
- Dam body Power House (No. 10 Francis turbines, IP = 10x66 MW)
- Switchyard (200 x 150 m, 400 kV line bays)
Batoka Gorge (Zambia)
Trans-boundary hydropower plant of 1'600 MW, equally shared among Zambia...
Arda Cascade (Bulgaria)
Hydropower cascade including the existing plants of Karjali (IP = 106 MW),...
Montedoglio dam has suffered some damages at the spillway and dam body due to...
Lufubu Cascade (Zambia)
LUFUBU HPP Cascade envisages the construction of three hydropower plants on...
Rockfill dam with bituminous facing (BFRd) with a reservoir for irrigation,...
Lower Diamphwe (Malawi)
This project includes the Lower Diamphwe Multipurpose Dam and associated...
Hydroelectric Power Plant, with IP = 525 MW, which the exploits of N° 5...
Alto Temo (Italy)
Water storage plant for irrigation purposes with a capacity of 90 Mm³
Storage works for Famagusta urban water supply.


Morrison Construction, the Scottish construction business of Galliford Try, has been awarded a £28 million ($44.6 million) flood defence contract in northern Scotland.
The contract forms part of a £45 million ($71.6 million) Moray Council project to upgrade flood defences at Forres (Findhorn & Pilmuir) in Northern Scotland.
The project is part of the wider £177 million ($281.9 million) Moray Flood Alleviation scheme which combines the expertise of The Moray Council, Royal HaskoningDHV, Morrison Construction and EC Harris to solve flooding issues across Moray.
Upon completion, the project will alleviate potential flooding to the town of Forres from the Findhorn and Pilmuir catchments, by recreating riverside flood plains, constructing set-back flood defences and forming a new drainage channel with pumping station.
The contract is set to commence in September 2012 and will be completed in early 2015.


Information Officer II
Department of Information & Public Relations
Photo and Caption
Drainage works at Fortune Ghut have been progressing swiftly as the project nears completion. Gabion baskets have been installed at the top and bottom of the project site which will aid in controlling the water passing through the ghut which causes flooding in the area.
Works left to be completed include constructing more gabion baskets, connecting the top and bottom of the site; and reinstating the road.
The project is a part of the Caribbean Development Bank Loan Portfolio and is expected to be 100 percent completed by the end of the year.
Caption for Photo:
Fortune Ghut drainage work site, Gabion baskets in Ghut (Photo credit: provided)


The Aswan High Dam is a rock-fill dam that was constructed in the Nile delta in Egypt.
It was built to control the annual Nile floods, which depending on the year, would either bless the Egyptian countryside with plentiful irrigation water or rip through the riverside villages and leave mass destruction in its path. British engineers, aided by the Egyptian government, began the construction process in 1898.
The construction of this dam led to the creation of Lake Nasser, which subsequently led to the completion of the Aswan High Dam power plant. The dam helped generate hydroelectric power which led to the expansion of agricultural lands and projects. All these aspects helped strengthen the Egyptian economy.


| | Public
The spillway of the Llyn Brianne dam is a notable tourist attraction when the reservoir is spilling. The Llyn Brianne dam is a crushed and larger rock clay filled dam. Because of the importance of the River Towy salmon and trout fisheries, special protective measures were incorporated into the construction of the reservoir including a smolt trap and a restocking programme using artificially raised parr.
© 2006-2020 RouteYou - www.routeyou.com


Dix River Hydro-Electric Dam and Intake Tower, Near High Bridge and Burgin, "In Old Kentucky." [Same Print As No. 305] (Printed verso reads: "This dam is the largest rock filled power dam east of the rockies and backs up a reservoir 36 miles long with a capacity of 90,000,000 gallons of water. It's maximum power is 36,000 horsepower. The lake is one of the finest fishing spots east of the Mississippi."


Dubai Electricity and Water Authority (DEWA) has awarded an Dh248m contract to supply, extend and commission 40km of water pipelines near Al Qudra and Al Ain highway areas in Dubai.
The project will include an extension of 600-1,200 millimetre (diameter) extension of GRE (Glass-Reinforced Epoxy) main water pipes of up to 40km along Al Qudra Street and the Dubai to Al Ain highway, to increase water-flow capacity and provide water for future development projects in these areas.
Saeed Mohammed Al Tayer, managing director and CEO of DEWA, said: "In addition, there will be a pipeline along Emirates Road to increase the water-flow capacity of Khawaneej 2 and additional pipelines in other parts of Dubai to increase water flow in emergencies."
He added that the project will also include remote control and monitoring systems, which will allow the continuous control of the main water transport network through remote-controlled valves in the control centre.
"A result, this will contribute to the isolation of faults in the shortest possible time, thereby reducing water losses in the network," Al Tayer said.
The project will take 30 months to implement, according to the planned programme.


... Flood Warning extended until Friday afternoon for
the Pascagoula at Merrill
* until Friday afternoon.
* At 10 am Thursday the stage was 22.6 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Flood stage is 22 feet.
* The river will continue to slowly fall to below flood stage by tomorrow morning.
* At 22 feet... flood stage. Water approaches homes in west Merrill.
Lat... Lon 3098 8877 3098 8872 3082 8871 3074 8864
3074 8868 3082 8879
910 am CDT Thu Apr 25 2019
The Flood Warning continues for
the Pascagoula river at Graham Ferry.
* Until Sunday April 28.
* At 8:45 am Thursday the stage was 16.2 feet.
* Minor flooding is forecast.
* Flood stage is 16.0 feet.
* Forecast... the river is expected to expected to remain above flood
stage through Saturday April 27th, then fall below flood stage
early Sunday morning April 28th.
* Impact... at 16.0 feet... river property at Cumbest Bluff will be cut
off by high water and some river roads will be impassable.
* Impact... at 15.0 feet... lower elevated homes at Cumbest Bluff are
threatened. Some river roads will be impassable.
Lat... Lon 3039 8856 3039 8861 3074 8869 3074 8858
Severe Weather Get Mobile & Email Alerts
Jackson Severe Watches & Warnings NOAA Weather Radio
Watches & Warnings
Issued: 10:59 AM CDT Apr. 25, 2019 – National Weather Service


Chicoasen is a 2,400MW hydro power project. It is located on Grijalva river/basin in Chiapas, Mexico. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently active. It has been developed in a single phase. The project construction commenced in 1974 and subsequently entered into commercial operation in 1980. Buy the profile here.
The project is currently owned by Comision Federal de Electricidad.
The project generated 6,818 GWh of electricity.
The project construction commenced in 1974 and subsequently entered into commercial operation in 1980.
The turbines for the hydro power project have been supplied by GE Renewable Energy and Mitsubishi Heavy Industries.
GE Renewable Energy supplied 8 electric generators for the project.
For more details on Chicoasen, buy the profile here.


The Luang Prabang project will be Laos' third and largest dam on the river.
Lao PDR is planning a new 1,400MW hydropower project on the Mekong river, according to a report. This would be Lao’s third and largest dam on the river.
The Luang Prabang project is developed by a consortium between the government of Lao PDR, PetroVietnam (PVN) Power and Thai construction company Ch Karnchang PCL. This was previously expected to enter construction in 2020 but is raising concerns from neighbouring Cambodia, Thailand and Vietnam over downstream damages.
Laos intends to export 20GW of electricity to its neighbours by 2030. It had already built two hydropower plants on the Mekong River—the 1,285MW Xayaburi Dam and the 260MW Don Sahong Dam—and several others are planned.
In May, Lao PDR decided to build a new 684MW hydropower plant on the Mekong River. The Sanakham dam project would be built by an affiliate of Chinese state-owned power producer Datang International Power, Datang Sanakham Hydropower, for an estimated cost of $2.1b.
Laos has submitted plans to the Mekong River Commission (MRC), which will give an advisory opinion, and the consultation process will take 6 months. Construction is expected to start in 2020, and could be commissioned in 2028.


HYDERABAD: As almost all reservoirs across the Krishna river reaching full reservoir level (FRL), many power stations started power generation again, bringing cheer to a power-hit state.
Srisailam and Nagarjunasagar power stations stepped up their hydel generation to let out incoming flood waters. As both Almatti and Narayanpur in Karnataka filled to the brim, both of them are letting out whatever water coming to them. While Almatti released 72,700 cusecs of water, Narayanpur released 54,185 cusecs on Thursday.
The water flow into Nagarjunasagar dam has also enthused AP Genco to commence power generation in four of the eight units with a total capacity of 810 MW.
With the current water level at 876.6 feet at Srisailam, AP Genco is now generating about 16 million units from both Left and Right power stations. It has also commenced power generation from four of the eight units in Nagarjunasagar dam.
With continuous inflows from upstream, Srisailam and Nagarjunasagar power stations have generated more than 1600 MW on Wednesday. Officials in the AP Genco said that hydel generation will increase as the flood flow from upstream increases. With copious water reserves in Sileru basin, another 440 MW power was generated by AP Genco.
As against 872.2 feet at the Srisailam dam last year, the water level is now at 876.6 feet as on Thursday. However, at Nagarjunasagar, the level is at 553.7 feet as against FRL of 590 feet. At the Sriramsagar dam, the water level is at 1081 feet as against full reservoir level of 1091. Other projects like Jurala, Thungabadra, Singur, Somasila, Yeleru, Nizamsagar have also received significant inflows in the past two-three weeks.
With the state receiving nearly 19% deficient rain during the current monsoon, and significant inflows into Krishna and Godavari rivers, has revived hopes of farmers in the delta region.
Against normal rainfall of 403.5 mm only 328 mm was received till date during this monsoon season.


Appurtenant Safety Structures for Dams and Hydraulic Circuits
CR053 course is part of 1 study plan
Ing. full-t. program nC > V compulsory-elective Winter Semester 2nd year 5 credits
The course provides students with information on the safety assessment of the water works during floods. N-year flows in the profile of the dam determining, design discharge, transfer the flood waves and its transforming through the reservoir. The use of emergency spillways and bottom outlets of dams for controlled transfer of flood waves. Converting of the control flood waves. The design of the emergency spillways, spaces of stilling basins and spillway channel for safe operation during floods. Designing of the multipurpose flow control structure of small dams and polder dams. Function and Designing of the surge tank of the hydropower plant. Water hammer exclusion of the direct impact in long pipelines and pumping stations circuits.
The course builds on the knowledge of the subjects of hydraulics, hydrology, dams, weirs, hydro power utilization. Introduction to the designing of appurtenant structures for dams for the safe transfer of flood flows, which include spillways, chutes bottom outlets, sewage tunnels and objects for the control of kinetic energy flow. Students will get acquainted also with hydraulic solution of the surge tanks and eliminating water hammer effect.
Hydraulic, dams, hydrology, river training and weirs, hydro power utilization. Basic knowledge of statistics.
Metal construction of hydraulic structures, mathematical modelling in water management.
Planned educational activities and teaching methods
Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies. In the course will be presented the photos and videos of converting flood on the safety of the tests on scale models and objects of their own works. Students get acquainted with the latest tests in the laboratory model parts or complete the security object of the water works.
Forms and criteria of assessment
Successful conclusion of the course requires the completion of exercises with the granting of credit for the course. The credit required protocols focused on the various proposals of the object.
Methodology and solution of hydrodynamic phenomenons including their modelling
Specification of controlled instruction, the form of instruction, and the form of compensation of the absences
Vymezení kontrolované výuky a způsob jejího provádění stanoví každoročně aktualizovaná vyhláška garanta předmětu.
2 hours/week, 13 weeks, elective
Syllabus of lectures
1. The safety assessment of the water works during floods, flood waves, design discharge, control flood, calculations of the transformation, run-off control
2. Emergency spillway of dams ? lateral, frontal, shaft, restrain system in front of weir
3. Designs of safety shapes of the frontal and lateral weirs, spaces of stilling basins and spillway channel
4. Designs of safety shapes of the shaft weir, the flow regimes
5. The bottom outlets, equipment, control, capacity calculating
6. Stilling basins, objects for energy dissipation
7. Pooled objects of small dam, polder dam, boulder chute
8. Outlet tunnels
9. Surge tank - solutions of the level dynamic, water hammer and its elimination
10. Behavior of the movable weir during flood, water distribution works on rivers
11. Modern methods (UVP, PIV, pressure principle ..) used for current flow characteristics measuring on hydraulic
models and for calibration and verification of numerical security objects models security
2 hours/week, 13 weeks, compulsory
Syllabus of practice
1. – 2. Weir-nape profiling for different values of pressure
3. Shaft spillway profiling, outlet tunnel designing
4. – 5. Rectangular prismatic and divergent stilling basin designing
6. - 7. Design of a combined object in small dams and polder dams
8. Hydraulic design of bottom outlet in the dam
9. – 10. Designing of the surge tank and the gate closing for the exclusion of the direct impact in the pipeline
11. Demonstration of processing and use of results obtained from measurements on physical and numerical models of


Oakcreek Flood Risk Management
This project was bid on June 3, 2015 and H&S Contracting was chosen as the contractor. The project started on 25th Street and involved the construction of an earthen levee over vacated lots. A project overview map is located on the right hand side of this page.
Levee construction was completed in 2015 while landscaping was completed in 2016. Final project acceptance is expected in 2017.


Kushiro River No.4
Kushiro River (釧路川 Kushiro-gawa?) is a river in Hokkaidō, Japan. It is 154 kilometers (96 mi) in length and has a drainage area of 2,510 square kilometers (970 sq mi). The Kushiro originates from Lake Kussharo and flows south across the Kushiro Plain. The river is joined by two tributaries, the Kuchoro River (60.2 kilometres (37.4 mi)) and the Setsuri River (59.8 kilometres (37.2 mi)), before it empties into the Pacific Ocean at the port at Kushiro. The lower reaches of the river form broad wetlands. The Shinkushiro River (13 kilometres (8.1 mi)), which was built roughly parallel to the Kushiro River, was completed in 1931 and flows south to the Pacific Ocean.
From Gojikkokueki To Iwabokkisuimon


Mini concrete pump, a small type of concrete pump, is used to convey concrete mixture through pipeline. It could act perfect performance in small scale project, such as house building, road repairing, hydraulic engineering, etc. For mini pump, there are many
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Concrete Pump JBT30 P2 small portable concrete pump with mixer GCP8/80-30D Diesel Concrete Pump GMP7/35D Small Concrete Pump with Diesel Engine GPS-7A capacity adjustable mini concrete pump GCP40H-E Hose Type Concrete Pump Mini Portable
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The Heavy Civil Infrastructure Business of Larsen & Toubro has secured anorder from the prestigi ous Green kogroup,oneoftheworld’sleadingrenewableenergycompanies,for developmentofan offstreampumpedstorage projectinMadhyaPradesh.
The Civil and Hydromechanical works of the project will be executed through a Consortium led byLarsen & Toubro, under a stringent timeline of 30 months. Upon completion, the project will beoneofthelargestcleanenergy projects ofitskindinIndia.
Gandhisagar Pumped Storage Project
The Gandhisagar Pumped Storage Project (PSP) is designed to meet a pumped storage capacity of10,080 MWHr, envisages creation of an upper reservoir near Khemla block village, (about 75 Kmsfrom Neemuch, Madhya Pradesh) while the existing Gandhisagar reservoir will be the lowerreservoir.
The project involves constructing an Upper Dam (to form the upper reservoir), IntakeStructurewith Approach Channel Steel Lined BuriedPenstock/PressureShaft(Vertical&Horizontal), Surface Powerhouse, Draft tube tunnel, Tailrace Outlet Structure, Tailrace channel,etc.


Full set of 4 vehicle stabilization struts with hydraulic lifting capability and accessories.
6000 lb. hydraulic lifting capacity at full extension
12″ hydraulic lift stroke
Easy to adjust inner extension tubes
Large anchor attachment ring
Multiple attachment options (ratcheting straps, chains, picket anchors)
Set includes (4) hydraulic lifting struts, (4) tube adapters, (4) standard heads, (4) ratchet straps, (2) 5/16″ Grade 70 attachment chains, (2) 15″ J-Hooks, (2) multi-hook clusters


VIDEO: Dredging at Stevenson’s Creek Completed (USA)
May 30, 2014, marked the end of a 6 month dredging project in Stevenson’s Creek, Clearwater, FL.
Gator Dredging (the United States Army Corp of Engineers approved dredging contractor for Stevenson’s Creek) has successfully completed their hydraulic dredging project as part of the extensive effort to enhance water quality and remove sediment build-up in the Stevenson’s Creek Estuary.
The project scope consisted of dredging of approximately 105,000 cubic yards of sediment from the canal. In this video the second dredge is leaving the lower end of Stevenson’s Creek.
Dredging Today Staff, June 25, 2014


Stormwater design for Asphalt Plant
Building Consent application and stormwater treatment and disposal for asphalt plant, West Melton, Christchurch
Description: Fulton Hogan proposed the construction of a new asphalt plant at their Miners Rd gravel quarry, near Christchurch. The stormwater discharge consent incorporated strict conditions in order to minimise the risk of groundwater contamination. These included sealing the entire 5.8 hectare site to minimise the risk of discharging contaminants to groundwater, treating all stormwater via a large oil interceptor pond, and disposal to ground via an infiltration basin.
e2Environmental were engaged to complete the building consent application, design the wastewater reticulation, and design the stormwater treatment and disposal (to land) system.
Our expertise: e2Environmental carried out modelling, detailed design of the stormwater system and construction observation. The detailed design included a monitoring and control system to minimise the risk of groundwater contamination occurring if a spill was to occur, and designing the interceptor pond, pumping station and infiltration basin elevated above the site.
Outcome: The new asphalt plant has been built and is operational. The wastewater and stormwater systems are functioning as designed.


Sarkarpathy Power House is erected in the Parambikulam River of Sarkarpathy in the Coimbatore
district Anai malai taluk of Tamil Nadu.
The power project is commissioned in 1966. It has an approved and installed capacity of 30 MW.
Parambikulam and Thunakadavu Reservoirs are the main reservoir for the power house.
The power house is owned by Tamil Nadu State Electricity Board under the management of Tamil
The type of turbine used in the power house is Vertical Francis. The maker of both Turbine and
Generator of the power plant is by the Hitachi Ltd of Japan.
The power generated from the power house is distributed to the houses of people living around the
district of Coimbatore


Threaded flow control valves for low pressure irrigation.
- 3/4” BSPM threaded
- Simple on-off operation and straight through flow.
- Operating pressure range up to 300 kPa.
- Green Back cap for standard irrigation applications.
- UV stabilised materials for long life.
Irrigation from rain tanks, non-pressurised containers where
3/4” BSPM threaded connection is required.


Kyoga Nile river - Uganda
Salini Costruttori S.p.A.
2008 - 2009
Description for Kyoga Nile (Uganda)
Kamdini (Karuma) is the first plant of the Kyoga-Nile cascade.
Kibaa is the second plant of the cascade, located 43 km downstream of Kamdini (Karuma) hpp.
Murchison is the third plant of the Kyoga-Nile cascade, located 35 km downstream of Kibaa hpp.
- Bituminous Facing Rockfill Dam ( H = 30 m , L_crest = 480 m, V_reservoir = 68 Mm³)
- Tunnels (No. 2 River Diversion tunnels L = 0.5 km, D = 12 m; No. 2 Tailrace tunnels, D = 14 m, L = 4 km)
- Canals (Headrace canal W_bottom =15 m, L = 5,7 km; Tailrace canal W =15 m, L = 2,5 km)
- Power Shaft (D = 15/17 m, L = 80 m)
- Underground Power House (No. 10 Francis Turbines, IP = 1'260 MW, H_net = 64 m)
- Bituminous Facing Rockfill Dam (H = 83 m , L_crest = 2'150 m, V_reservoir = 300 Mm³)
- Tunnels (No. 1 River Diversion tunnel, D= 14 m, L = 1 km; No. 2 Tailrace tunnels, L = 4.5 km, D = 14 m)
- Canals (Headrace canala W_bottom = 14 m, L = 10 km; Tailrace canal W_bottom = 14 m, L = 2.0 km)
- Power Shaft (D = 11/14 m, L = 140 m)
- Underground Power Houses (No. 16 Francis Turbines, IP = 2'600 MW, H_net = 131 m)
- Bituminous Facing Rockfill Dam (H = 44 m , L_crest = 1'300 m, V_reservoir = 170 Mm³)
- Tailrace Tunnels ( No. 2, D= 14 m, L = 5.5 km)
- Headrace Canal (W_bottom = 14 m; L = 0.7 km)
- Power Shaft (D = 11/14 m, L = 120 m)
- Underground Power Houses (No. 14 Francis Turbines, IP = 2'150 MW, H_net = 107 m)
Addis Ababa urban water supply scheme with a storage capacity of 40 Mm3.
Three-dam projects for irrigation purposes.
Water storage plant for irrigation purposes with a reservoir capacity of 42...
Lufubu Cascade (Zambia)
LUFUBU HPP Cascade envisages the construction of three hydropower plants on...
Little Beles (Ethiopia)
Reservoir for water supply with a storage capacity equal to 3.5 Mm³.
Refurbishment of the Uvini hydropower plant.
Rio Mannu (Italy)
Concrete gravity dam for water supply and irrigation to be constructed in two...
Lusaka project including domestic water supply pipeline for the city of...
NAO (Sierra Leone)
Restore of the MV and LV distribution system in the two towns of Makeni and...


Author(s): J. M. Carrillo; J. Matos; R. Lopes
Keywords: Labyrinth weir; Flow depths; Pressure head; Velocity profiles; CFD; ANSYS CFX
Abstract: Labyrinth spillways are non-linear weirs folded in plan-view to provide a longer total effective length of the crest for a given overall spillway width, and consequently allowing a higher discharge capacity compared with a straight overflow weir for the same width and upstream energy head. To date, most studies on labyrinth weir hydraulics have been experimental and focused on the discharge capacity as a function of geometric factors and hydraulic parameters, such as the crest shape and sidewall angle, and the energy head over the weir, respectively. In this study, numerical simulations of subcritical flow downstream of a labyrinth weir were conducted using the computational fluid dynamics software ANSYS CFX. The results were compared with experimental data previously acquired on a fairly large-scale flume, including a trapezoidal labyrinth weir with quarter-round crest profile and sidewall angleα=30o. In general, fairly good agreement was obtained on the main flow properties downstream of the weir, such as flow depths, bottom pressure heads and velocities sufficiently distant from the invert, except in the vicinity of the weir.


- Flood Warning issued May 24 at 9:30PM CDT until May 29 at 1:00PM CDT by NWS
- Effective: 9:30 p.m. on Sunday, May 24, 2015
- Expires: 1 p.m. on Friday, May 29, 2015
...The Flood Warning continues for the following rivers in
Big Creek at Blairstown affecting Cass...Henry and Johnson Counties.
Grand River near Chillicothe affecting Linn and Livingston Counties.
Grand River near Sumner affecting Livingston...Carroll...Chariton
and Linn Counties.
Grand River near Brunswick affecting Carroll and Chariton Counties.
Marais Des Cygnes River at Osawatomie affecting Miami County.
Marais Des Cygnes River at La Cygne affecting Linn County.
Marais Des Cygnes River near Trading Post affecting Linn and Bates
Missouri River at Sibley affecting Clay...Jackson and Ray Counties.
Missouri River at Napoleon affecting Jackson...Lafayette and Ray
Missouri River at Waverly affecting Carroll...Lafayette and Saline
Missouri River At Miami affecting Carroll...Chariton and Saline
Missouri River at Glasgow affecting Chariton...Howard and Saline
Missouri River at Boonville affecting Cooper and Howard Counties.
Platte River near Agency affecting Buchanan County.
Platte River At Sharps Station affecting Platte County.
Platte River near Platte City affecting Platte County.
The Flood Warning continues for
The Missouri River at Glasgow.
* from Monday evening to Friday afternoon.
* At 8:30 PM Sunday the stage was 21.7 feet.
* Flood stage is 25.0 feet.
* Moderate flooding is forecast.
* Forecast...Rise above flood stage by Monday before midnight and
continue to rise to near 27.9 feet by Tuesday evening. The river
will fall below flood stage by early Thursday afternoon.
* At 27.0 feet...Many agricultural levees are overtopped. Widespread
flooding of rural areas occurs. Secondary roads and homes behind
levees may be inundated.
* At 25.0 feet...Farmland along the river floods.
Location FS Stage Day/Time Forecast
Glasgow 25 21.7 Sun 08 PM 27.9 Tuesday evening
- See more at NOAA


The Flood Warning continues for
the Platte River near Kearney.
* At 8:15 PM Saturday the stage was 6.9 feet.
* Flood stage is 6.0 feet.
* Minor flooding is occurring and minor flooding will continue.
* Forecast... the river is expected to remain near 6.9 feet through
tonight before the water level begins slowly decreasing during the
day Sunday. Although a slowly decreasing water level is forecast
during the upcoming week, it is important to note that minor
flooding will likely be observed through the entire upcoming week.
* At 6.0 feet... minor flooding of rural lowlands occur.
Lat... Lon 4069 9925 4083 9839 4079 9833 4065 9889
Severe Weather Get Mobile & Email Alerts
Phelps Severe Watches & Warnings NOAA Weather Radio
Statement as of 8:49 PM CDT on May 23, 2015


This run-of-river hydro power project consisted of two independent hydro schemes in cascade - one upstream 16.5 MW and the second downstream and 26 MW, totalling 42.5 MW.
The project consisted of:
- Intake weirs on the two main rivers plus three tributary weirs
- Conveyance tunnels totalling 2.3km-long
- Low pressure steel conveyance and pipelines
- 70,000 and 50,000 m3 headpond storages
- Desanding basins
- Steel penstocks some 7.4 km-long in total
- Two surface power houses with tailrace channels and switchyards
- Extensive access roading
- Construction contract (civil, mechanical and electrical, and transmission) project management
- High level client support for lenders and insurers
- Detailed design of power houses and advice on other structures
- Specialist tunnel advice
- Design review.


Fiji: Dredging on Rewa River Will Be Completed Soon
The contract for the dredging of the Rewa River has been awarded to the China Railway First Group and work is expected to commence soon.
Director Lands and Water Resources Management Lakshman Mudaliar told FBC News the dredging machine for the project is currently being cleared.
“The compliance works will be completed by the end of this week and then the machine will be allowed to be unloaded at the wharf and then will be assembling at the Fiji Shipping Yard at Walu Bay. This works is contemplated to be completed by early next week and the machine will then be mobilized at the mouth of the Rewa River.”
Mudaliar says the dredging works will start from the mouth of the river to Luvuluvu and 1.2 million cubic metres of soil is expected to be removed.
By Savaira Tabua (radiofiji)
Source: radiofiji, August 4, 2010;


Northern Province - Zambia
LPC Lufubu Power Company Ltd.
2013 - in progress
Description for Lufubu Cascade (Zambia)
LUFUBU HPP Cascade envisages the construction of three hydropower plants on the Lufubu River with a total installed capacity of 325 MW (energy annual production 1280 GWh/y).
Reservoir (V_tot = 720 Mm³)
RCC Dam (H = 64 m, L_crest = 3'500 m)
Headrace Canal (L = 4,4 km)
Penstock (L = 2.6 km, D = 4.2 m)
Power house (Open air type, No. 2 Francis Turbines IP = 2x66 MW )
Reservoir (V_tot = 86 Mm³)
RCC Dam (H = 22 m, L_crest = 600 m)
Headrace canal (L = 6.2 km)
Penstock (L = 0.6 km, D = 4.2 m)
Power house (Open air type, No. 2 Francis Turbines IP = 2x43 MW)
Reservoir (V_tot = 400 Mm³)
RCC/Rockfill Dam (H = 47 m, L_crest = 1300 m)
Headrace Canal (L = 7.8 km)
Penstock (L = 12.1 km, D = 4.5 m)
Power house (Open air type, No. 2 Francis Turbines IP = 2x54 MW)
- Feasibility study
- Detailed design
- Environmental and Social Impact Assessment
- Tender documents and assistance to the Cliente during the bid
- Supervision of construction
Carpat PSP (Romania)
Pumped storage plant with an installed power of 300 MW.
Hydroelectric project on the Victoria Nile River within an installed power of...
Batoka Gorge (Zambia)
Trans-boundary hydropower plant of 1'600 MW, equally shared among Zambia...
Water storage plant for irrigation purposes with a reservoir capacity of 42...
Impianto Idroelettrico (PI = 255 MW) sul fiume Lunsemfwa a valle della diga...
Gibe III (Ethiopia)
The design of this record breaking 250 m high RCC dam has proved to be one of...
Maswa project including domestic water supply pipeline for the district...
This majestic project, born of the vision and imagination of Giorgio...
Rio Mannu (Italy)
Concrete gravity dam for water supply and irrigation to be constructed in two...


Premium Swimming Pool Pump: The self-priming pool pump has brilliant performance with UL, CE, FC certification. It is suitable for pools of up to 100,000 liters and can serve you for long time..2.5 HP Copper Motor: The swimming pool pump is equipped with a pure copper motor for high efficiency, low noise, and long service time. The pool pump power: 1850W/2.5 HP, capacitance: 25 F, Amps: 16 A, voltage: 110V/60Hz, security rating: IP55..Superior Performance: The pool pump adopts an S-Tek flow system with a maximum head lift of 62.34 ft and a maximum flow rate of 560 L/min. In addition, the filter basket in the pump can effectively filter debris in the water to provide clean water, such as hair, leaves, gravels, etc..Secure Design: The housing of the pump is made of sturdy ABS and aluminum material, durable and corrosion-proof, preventing the motor and internal device from damage. Moreover, the pump is designed with a built-in thermal protector and automatic pressure control for security..Versatile Uses: The in-ground pool pump can be used on many occasions for providing high-efficiency water circulation and crystal clear water, such as swimming pool, bathing pool, landscaped pool, spa, etc.


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2011 Lom-Pangar Résumé du Plan de Réinstallation EN
Project Description: as the main impounding dam, the Lom-Pangar Hydroelectric Project is intended to supply water to Song Loulou power plant installations during low-water periods and to increase the production capacity of the Edea power plant. The project comprises a plant at the foot of the dam which will be linked to the Bertoua thermal power plant by a 90-kilovolt high-voltage line, then between Bertoua and Batouri and between Bertoua and Abong Mbang. The main 30 kV power distribution lines will be 867 km-long three-phase lines. The project will help to link up 9 headquarters of administrative units: Mindourou, Messaména, Mbang, Ngoura, Kette, Kenzou, Gari Gombo, Ndelélé and Lomié. This will cover 140 localities of more than 200 inhabitants each and there will be 10 000 lowvoltage subscribers when the installations are commissioned and 15 independent power producers.


Highway 65 resurfacing, drainage project begins June 10 in Aitkin County
DULUTH, Minn. — A major resurfacing and drainage improvement project is scheduled to begin Monday, June 10 on Highway 65 in Aitkin County. Motorists will encounter single lane closures and flaggers in the construction area.
Highway 65 will be resurfaced through Jacobson, Ball Bluff and Libby, providing a smoother, safer driving surface. The project also includes repair or replacement of several culverts and pedestrian accessibility improvements.
The project is scheduled to be completed in late-August, 2019.
Please visit the project website for additional information: mndot.gov/d1/projects/hwy65.


International tender to construct hydroelectric power stations
Swiss energy company Alpiq Holding Ltd. won the bid together with Hydro Power Nord Albania. The two companies plan to build hydroelectric power stations with a total capacity of around 80 MW on the River Curraj. Last year, in line with its plans to promote hydro power, Albania launched an international invitation to tender for several concessions for hydroelectric power stations. Winning the tender is the first of several steps on the long path towards realisation of the project. A final decision on the construction of the hydroelectric power stations will be made at a later stage.
The River Curraj is situated in Northern Albania, in a region that is home to most of the country's hydroelectric power stations with a total capacity of 1700 MW. The region is rich in precipitation, and its hydrological conditions make it ideal for hydro power generation.
This engagement in Albania marks the start of Alpiq's activities to harness the power of water in South Eastern Europe. Alpiq has extensive know-how in the field of hydroelectricity. For more than 100 years the company has been operating hydroelectric power stations in Switzerland, where it boasts a capacity of almost 3000 MW.


The HHR double acting hollow piston cylinder incorporates all of the design features of the HHS range with the added benefit of double acting design, which greatly enhances speed of operation and performance particularly in the longer length stroke options. Additionally a substantial hydraulic pulling force is available in the piston retraction mode of operation.
Double acting design
Nitrocarburised piston rod
Annular area overload protection valve
Low friction bearing surfaces
Collar thread protector supplied as standard
| Attribute name
Please Select Variant


Nai Gaj Dam: SC asks when the govt will provide funds for project?
ISLAMABAD: The Supreme Court resumed hearing of the case about construction of Nai Gaj dam in Dadu district of Sindh on Tuesday, ARY News reported.
A three-member bench of the apex court headed by Chief Justice Saqib Nisar heard the case regarding lack of funding in the construction of the dam project, which has delayed the completion of the project.
Chief Justice Saqib Nisar in today’s hearing asked the Additional Attorney General, that the federal government had to release funds for the dam, when the government will release the fund for the project?
The AAG said that the government of Sindh has changed its stance and hesitating over the construction of the project. The CJP said the federal government has to release Rs. 46 bln for the Nai Gaj dam project, while the 51 percent work of the project already completed.
Justice Ijaz-ul-Ahsan remarked that Rs. 16bln were released earlier.
The government lawyer asked the bench for some time for submission of the report. He said the Sindh government will also have to give its share in construction of the project.
The representative of the Planning Division told the court the government of Sindh says the construction of the dam will not be beneficial now.
Justice Ijaz ul Ahsan said that all details of the project should be provided to the court.
The Supreme Court had accepted a petition for hearing regarding the construction of Nai Gaj dam in September this year.
The counsel of the petitioner, Faisal Siddiqui, said that the dam will not be built on river but the water of the hilly torrents of Kirthar Mountain range will be stored in the water reservoir. The rainwater of the torrents will be stored in the reservoir and will also be supplied to the Manchhar Lake.
The completion of the Nai Gaj dam has been delayed by at least four years and the main reason is said to be insufficient funding for the project.
The construction work on the Nai Gaj dam was started in year 2012 and the project was supposed to be completed by April 2015. But due to the inordinate delay it is now expected to be completed by June 2019.
The delay has led to escalation in the cost of the project from initial Rs16.92 billion to over Rs26bn, as stated in the revised plan of the project.
Nai Gaj Dam is an embankment dam on the hilly torrent of Gaj in the gorge area at the edge of Kirthar Mountains range at about 65 km (40 miles) north-west of Dadu city. The dam’s power station would have a 4.2 MW installed power generation capacity.