reservoir dam Articles | Environmental XPRT

ArmorMax® Chosen in Milltown reservoir diversion channel stabilization project for state of Montana case study

PROJECT SUMMARY Over 100 years of deposited mine tailings prompted the Montana DEQ and U.S. EPA to embark on a major initiative to breach the Milltown Reservoir Dam and clean up contaminated sediments. But maintaining the flow of the Blackfoot and Clark Fork Rivers called for a potentially expensive diversion channel. Incorporating the AR-MORMAX® ARVS in the upper cross section to protect ...

Sep. 23, 2014

By Propex Operating Company, LLC

Storage effect of dam reservoirs: evaluation of three nonlinear reservoir models

Three different nonlinear models – an exponential function model, a logarithmic function model, and a power function model – were evaluated as possible candidates for the storage–outflow relationship of a reservoir. Also, the storage coefficient was derived by analyzing the impulse response function of the reservoir. Additionally, by applying the theoretical results, the storage coefficients ...

Mar. 25, 2017

By IWA Publishing

Characteristics of DOC concentration with storm density flows in a stratified dam reservoir

Among natural organic matter (NOM) defined as the complex matrix of organic materials abundant in natural waters, a gradual accumulation of recalcitrant organic matter (ROM) has been observed in impounded water bodies such as a lake or dam reservoir in spite of extensive efforts made to curtail organic pollutant loadings generated in their catchment areas. This paper aims to identify the effect ...

Dec. 1, 2010

By IWA Publishing

New York City reinvents capital program delivery

Faced with sharp increases of their 10-year capital budget to $19.5 billion, the New York City Department of Environmental Protection (DEP) performed a Capital Program Management needs evaluation to determine best practices, streamline processes, review organizational structure, benchmark the agency against other successful utilities, and identify new tools to improve the delivery of the capital ...

Oct. 13, 2007

By Water Environment Federation (WEF)

Junction Dam - Case Study

Project Description Built between 1959 and 1961, Junction Dam is a double-curvature concrete arch dam located on Silver Creek in El Dorado County, California, just downstream from where Little Silver Creek and South Fork Silver Creek merge. The dam is in a relatively narrow canyon with steep sides and retains the Junction Reservoir. The dam is 168 ft high with a crest length of 525 ft. It has a ...

Dec. 20, 2019

By Itasca International, Inc

Potential impacts on hydrology and hydropower production under climate warming of the Sierra Nevada

Watersheds of the Cosumnes, American, Bear and Yuba (CABY) Rivers in the Sierra Nevada, California, are managed with a complex network of reservoirs, dams, hydropower plants and water conveyances. While water transfers are based on priorities among competing demands, hydropower generation is licensed by the Federal Energy Regulatory Commission (FERC) and regulated by federal and state laws and ...

Mar. 1, 2011

By IWA Publishing

Augmentation of surface water sources from spatially distributed rainfall in Saudi Arabia

This study investigated the rainfall patterns, spatial variability, surface runoff generation and dam requirements in the southwestern region of Saudi Arabia. The region was divided into four areas Asir, Jazan, Al-Baha and the Red Sea Coast. Surface runoff was estimated for eight scenarios considering the runoff coefficients of 0.05–0.70, resulting in 203–2,835 million cubic meters (MCM) of ...

Feb. 9, 2015

By IWA Publishing

Accumulation of heavy metals in the bottom sediments of the Irkutsk Reservoir

The chemical composition of the bottom sediment, and more particularly the heavy metals content, reflects human developments and impacts on the catchment and reservoir's natural environment. The bottom sediments of the reservoir retained by the Irkutsk Dam have been analysed. The reservoir is mainly supplied by water from Lake Baikal. The following amounts of heavy metals have been found in the ...

Oct. 7, 2013

By Inderscience Publishers

Shaver Lake Dam Willowstick Survey - Case Study

Willowstick significantly reduces grouting works at heavily reinforced concrete dam A Willowstick survey of Shaver Lake dam successfully identified seepage paths underneath the copper faced dam. As a result the survey significantly reduced the amount of grouting required bringing large cost savings to the client. Interference from reinforcement and copper sheeting was successfully avoided ...

Apr. 19, 2019

By Willowstick Technologies LLC

Cumulative Environmental Impact Of Cascade Hydropower Dams Construction On The Water-River

Abstract Variation of environmental indices in cascade dams could be intensified in comparison with single dams. In cascade dams the intensification of long term negative impacts are more important than the impacts in single case dam. In addition, these impacts are more permanent and intense, so the precise study of cascade dams is indispensable. The main goal in this research is to study ...

Dec. 12, 2006

By MAHAB GHODSS Consulting Engineering Company (MG)

Controlling the water level of a river dam case study

SmartScan25 provides an efficient solution for controlling water level of the Wardha river reservoir from a distance of 40m (131ft) thus preventing draughts and floods to the district of Amravati, India. Upper Wardha Dam is build up on the Wardha River at a height of 36m (118ft) and 7km (4.35mi) length and situated on the boundary of Amravati and Wardha Districts, India. Controlling the water ...

Feb. 1, 2004

By Solid Applied Technologies Ltd. (SolidAT)

Tracing groundwater recharge sources beneath a reservoir on a mountain-front plain using hydrochemistry and stable isotopes

Mountain-front recharge, including mountain block recharge and stream seepage, is important for basin aquifers. With the construction of reservoirs in mountainous areas and the recurrent seepage problems of dams, reservoir seepage might become another type of mountain-front recharge. This study identified the recharge sources of groundwater beneath Huangbizhuang Reservoir on the North China ...

Mar. 25, 2017

By IWA Publishing

Assessing the impact of land use change on stream flow in a semi–urban river basin, Maharashtra, India

Historical hydrological data and satellite images acquired over a relatively large river basin were analysed to investigate the impact of the land use/land cover changes on stream flow during 1985 to 2004. Rainfall (from 16 rain gauge stations), stream flow (near basin outlet), and multi–temporal Earth observation (EO) satellite images were used to assess the impact of land use change on stream ...

Apr. 11, 2014

By Inderscience Publishers

The Grand Renaissance Dam and prospects for cooperation on the Eastern Nile

The escalation of tensions between Ethiopia and Egypt over the construction of the Grand Renaissance is at least partly based on a misunderstanding of the nature of the risks this dam poses to Egypt. There is a two-part, win–win deal that can defuse tensions between Egypt and Ethiopia. First, Ethiopia needs to agree with Egypt and Sudan on rules for filling the Grand Renaissance Dam ...

Jul. 30, 2014

By IWA Publishing

Establishment and application of three-dimensional realistic river terrain in the numerical modeling of flow over spillways

We present an integrated three-dimensional (3D) spillway model where the realistic and complicated river terrain is implemented by the platform CATIA (Computer Aided Three Dimensional Interactive Application). This integrated 3D spillway model allows for complicated topographic and geomorphic conditions and describes the spatial distribution of the spillway dam (upstream reservoir, downstream ...

May 31, 2017

By IWA Publishing

Threats to the World’s Freshwater Resources

OAKLAND, CA - Ten to twenty thousand people die every day from water-related diseases; worldwide, half of all wetlands have already been lost to development and conversion. Global climate change will wreak potential havoc on the world's freshwater. In short, across the globe, the world's scarce fresh water is being threatened as never before. To make matters worse, the traditional methods ...

Jan. 1, 2002

By Pacific Institute

The approach and countermeasures to solve water resource problems and reconstructing a good ecological environment in Yangtze Delta Region

The Yangtze Delta Region is now suffering from a water resources crisis and ecological destruction. An integral solution to these problems is proposed in this paper. In this scheme, a dam is built at the mouth of Hangzhou Bay, which will provide a ca.40 billion m³ freshwater reservoir under the prerequisite of keeping normal the water level of Hangzhou Bay. The reservoir will connect with the ...

Feb. 9, 2009

By Inderscience Publishers

Time-lapse photography for monitoring reservoir leakages (Montejaque dam, Andalusia, southern Spain)

A methodology based on the use of time-lapse photographs is presented to evaluate the leakages over time of a reservoir (Montejaque dam, Málaga Province, Spain) that feeds a karstic aquifer. In particular, photographic control allows the evolution of water levels in the dam and the river that feeds it to be monitored. Through changes in water volume, which are calculated from the level ...

Mar. 27, 2017

By IWA Publishing

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 ...

Aug. 25, 2014

By Inderscience Publishers

<italic>IntegTa</italic>: a procedure for integrative management of dammed raw water reservoirs for drinking water production and their lower reaches

IntegTa: a procedure for integrative management of dammed raw water reservoirs for drinking water production and their lower reaches

Dammed water reservoirs for drinking water production with their catchment areas and rivers downstream represent dynamic systems that change constantly and are subject to many influences. An optimized management considering and weighing up the various demands on raw water reservoirs (long-term storage for drinking water supply, flood control, ecological state of the rivers downstream, energy ...

Dec. 1, 2010

By IWA Publishing

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