water dam Articles
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Tips for diverting water on construction projects
For the vast majority of construction projects, a dry worksite is something that’s essential. In many cases though – such as when working in flowing water to repair a bridge – it’s not easy to provide one. In such cases you will need to divert the water as opposed to damming it. To further expand on the example given above, one way of diverting the water would be to ...
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Hydrochemical characterization of a river affected by acid mine drainage in the Iberian Pyrite Belt
This paper addresses the modelling of the processes associated with acid mine drainage affecting the Trimpancho River basin, chosen for this purpose because of its location and paradigmatic hydrological, geological, mining and environmental contexts. By using physical-chemical indicators it is possible to define the contamination degree of the system from the perspective of an entire river ...
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Effects on the zooplankton community of pollutant disposal into the Jose Antonio Alzate dam, Mexico
To study the influence of pollutants on water quality from the Jose Antonio Alzate dam in Mexico, plankton samples were taken from locations along an approximately 9 km in a downstream direction. Determinations were made of pH, dissolved oxygen, biochemical oxygen demand, transparency, conductivity, and metal levels in plankton. The dam waters were generally hard, with high levels of electrolytes ...
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Mining application - Heavy metals testing in water
Isaac Plains is an open cut coal mine, in Northern Queensland, Australia. The Isaac Plains Project operates under an Environmental Authority (EA). They needed a field test for heavy metals compliance. The water sources included potable water, mine affected water, natural creek flows, water releases, groundwater and the receiving environment. The site water management system is comprised of ...
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Ironmacannie Mill, Scotland - Case Study
This turbine was installed by Border Hydro Ltd at a mill that was converted into a residence in Scotland. The turbine is a CMC-MH unit operating on 18ft of head at 2.6 Kw with a poured concrete basin to ensure the draft tube is always submerged to maintains suction head. The penstock pulls water from an existing dam and discharges below the ...
By Nautilus LLC
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How do I know the size pond liner I need?
Now the pond liner is more and more popular,it is widely used for fish pond, shrimp pond, water reservoir, dam, landfill, water treatment, oil gas and many civil engineering projects. It is waterproof,impermeable, and uv ...
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4 Tips when installing a temporary cofferdam
If you want an efficient, effective, environmentally-friendly means of providing a solution to water intrusion, flood protection, damming or water storage then a temporary cofferdam is what you need. A temporary cofferdam is a non-permanent structure that is used to create a barrier in order to control the flow of water. Here at Dam-It-Dams we supply water-filled cofferdams, and we’re going ...
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What is HDPE liner?
HDPE liner is also named hdpe geomembrane,a kind of pond liner.It is made of high-density polyethylene resin, with carbon black material.The hdpe liner is waterproof,impermeable, UV resistant,chemical resistant, puncture resistant,hdpe liner has high tensile strength, is widely used for fish pond, water dam, water treatment, oil gas, landfill,mining, root barrier and so on,hdpe liner is becoming ...
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Houghton Lake, MI - Case Study
Location: Houghton Lake, MI Cofferdam Size: 8′ high x 150′ long. Water Depth: 6′ Installation Time: 4.5 hours Project Description: Remove bottom sediment to deepen canal for improved boat access. The dredging process can be greatly expedited with the use of water-filled cofferdams from Dam-It Dams. By holding back water on the site, excavators ...
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Market triumphalism in water governance: a study of the Indonesian West Tarum Canal water allocation
Governing, which is defined as the totality of interaction of actors aiming to solve societal problems, is never as ideal as its definition. A two-tier analysis of governance – one that considers individual actors and institutions – proves that dominance is always at play among these multiple interactions. The two-tier analysis shows that when water is managed by a public agency, it does not ...
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Keoladeo National Park: highlighting surface water tensions
Keoladeo National Park in Rajasthan, India is a world-class bird sanctuary and world heritage site experiencing serious ecological stress due to drought and upstream dam construction. In response to this reoccurring scarcity of water, Indian authorities have announced a new 17 km pipeline to divert water to the wetland. Both the dam-induced water shortage and proposed pipeline solution raise the ...
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Predicting peak breach discharge due to embankment dam failure
Predicting peak breach discharge due to embankment dam failure is of vital importance for dam failure prevention and mitigation. Because, when dams fail, property damage is certain, but loss of life can vary depending on flood area and population. Many parametric breach models based on regression techniques have been developed so far. In this study, an efficient model is proposed to forecast ...
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Dams Construction Tenders???
“The idea is to create a central place that is enormously more efficient than what we have today and bring down the cost of infrastructure by making it smarter,” he says. “It’s a huge deal in the developing world, and even in our country, the infrastructure is crumbling. It’s estimated that $2-3 trillion is needed to upgrade our infrastructure.” Oliver says 85 ...
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Semi–arid watershed management: the experimental farm and representative catchment of the High Mountains of Sinai Peninsula
The need for watershed management models in the Arab Republic of Egypt - particularly in the remote arid and semi–arid desert and mountain regions - surfaced once again as one of the very demanding instruments for socio–economic and socio–ecological sustainable development. Highland watershed management and mountainous agriculture are highly impacted under the aspects of climate change, reflected ...
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Amistad Dam site
Summary:At the Amistad Dam site an investigation was made with a 56 electrode STING/Swift system to determine the location of leaks which have effectively drained the giant dam of water. As it was not immediately obvious which array type would return the best data three different arrays were recorded on the same electrode layout. The resulting three 2D profiles show both similarities and ...
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Comparison of water supply dams’ spillway performance in Malaysia
This paper compares the risk of dam overtopping of two rolled compacted concrete (RCC) dams in Malaysia. Uniform methodology was carried out by selecting an appropriate probable maximum precipitation (PMP) series, performing a catchment PMP/PMF (probable maximum flood) rainfall runoff routing and finally, routing the inflow hydrographs through the reservoir water body. The critical PMP/PMF ...
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Spatio-temporal variability in the thermal regimes of the Danjiangkou reservoir and its downstream river due to the large water diversion project system in central China
Understanding water temperature variation in regulated rivers and reservoirs becomes increasingly important as the environment and ecosystem are approaching their thermal limits. In this paper, a multi-model approach is used to quantitatively access the spatio-temporal change in thermal structures of the Danjiangkou reservoir and its downstream river. The area is subject to thermal and ...
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Ion chemistry of waters impounded by the Ziqlab dam, Jordan, and weathering processes – a case study
The area included in the present investigation is that surrounding Ziqlab dam in the northern Jordan Valley. The water chemistry of the impounded lake shows that it is dominated by Mg, Ca, Na and HCO3. These waters reflects the dominance of carbonate weathering with some contribution of silicates. Mg + Ca + Na and HCO3 + Cl account for about 90% of the total cations and anions. X-ray analysis ...
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Tecta B16 Success Story - Water Treatment Plant - Malaysia - Case Study
Drawing water from a river and a dam, this water treatment plant located south of the capital Kuala Lumpur treats the water at its source. Once the water is safe, the plant delivers up to 304 MLD of water to a large urban and countryside ...
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Dam Restoration- Case Study
ERC was hired as the General Contractor to complete the restoration of the Minerva Park Lake Dam. The scope of work included dewatering a 6 acre lake. Demolition of outfall and lake structures, excavation of 6,000 tons of soil and the installation of chimney drain across the entire face of the dam. ERC also installed a cast-in-place concrete outfall & downshoot, lake drain structure & ...
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