reservoir dam Articles - page 3 | Environmental XPRT

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 ...

Jun. 18, 2015

By IWA Publishing

Tracing fine sediment sources in small mountain catchment

Fine sediment represents an important diffuse source pollutant in surface waters, due to its role in governing the transfer and fate of many substances, including nutrients, heavy metals, pesticides and other organic contaminants, and its influence on aquatic ecology. Therefore, catchment management strategies frequently need to include provision for the control of sediment mobilization and ...

Jan. 1, 2011

By IWA Publishing

Optimization–simulation for short-term reservoir operation under flooding conditions

The problem of optimal operation of river–reservoir systems under flooding conditions is formulated in this study as a combination of particle swarm optimization (PSO) algorithm and a simulation model of river flood routing. Both hydrologic (Muskingum and Muskingum-Cunge) and hydraulic (solving Saint-Venant equations) flow routing methods are linked to the PSO algorithm with the objective ...

Nov. 1, 2011

By IWA Publishing

SVFlux and SVSlope in UTSA Senior Project - Bell County Earthen Dam

General This article presents a recent project performed by undergraduate students at The University of Texas at San Antonio. Their project is the culmination their degrees in a capstone class. The objective of the class was to present an opportunity to apply design skills to execution of an open-ended integrated civil engineering design project, including field and laboratory investigations, ...

Jul. 11, 2012

By SoilVision Systems Ltd.

Where is water the most expensive water in the country and why does it cost so much?

Have you noticed that your water costs have risen over the past few years? Wondering where all of this money is going? Perhaps you haven’t noticed any change as of late, but chances are you will. And soon. What used to be an afterthought when it came to paying the monthly utility bills might now have you scratching your head as to why the cost of your water has increased so drastically. In ...

Feb. 21, 2020

By Banyan Water, Inc.

Stakeholder engagement in multi-objective optimization of water quality monitoring network, case study: Karkheh Dam reservoir

Reservoir water quality is important for water quality management downstream. A hierarchical approach is developed to present the monitoring locations within a format that satisfies the objectives of social stakeholders for making final decisions. First, a CE-QUAL-W2 model is applied to simulate water quality variables in the reservoir for a long time using a set of historic data. Second, ...

Dec. 8, 2016

By IWA Publishing

Strategic security measures for water infrastructure

As the 10th anniversary of the September 11, 2001 (9/11) attacks is fast approaching, the United States (U.S.) has no definite information of terror threat. According to the systematic approaches of risk assessment and concise intelligence analysis presented in the book entitled, "Risk Assessment for Water Infrastructure Safety and Security" (hereafter, the "RAWISS book"), the terrorists will ...

Sep. 10, 2011

By IWA Publishing

High tech fish cleaning at Leake Co. water park - Case Study

A state of the art fish-cleaning station has opened at Leake County Water Park near the Lowhead Dam at Barnett Reservoir, officials of the Pearl River Valley Water Supply District announced. The fish-cleaning station, partially funded by a Sportfish Restoration grant through the Mississippi Department of Wildlife, Fisheries and Parks, includes a grinding device that pulverizes left over fish ...

Jul. 18, 2019

By Quality Machine & Manufacturing

California Focusing on Groundwater Recharge

Depleted aquifers provide storage for surplus precipitation during wet seasons “The effects of climate change are necessitating wholesale changes in how water is managed in California,” announced the state’s Department of Water Resources in June 2018. The long-term forecast calls for more frequent drought years, but also for years that dump more precipitation on the state than ...

Dec. 10, 2019

By Fluence Corporation

Water system master plan

Client: City of Fort Smith, Ark. Completion Date: 2002 Services Provided Water supply/delivery Hydraulic modeling and design Water quality analyses Water supply hydrology Flood hydrology 3-D project rendering Physical hydraulic models Spillway hydraulics GIS/GPS Design plans and specifications Construction services Project Summary Burns & McDonnell has completed a ...

Sep. 21, 2009

By Burns & McDonnell

Integrating water with climate change adaptation plans

This policy brief, published by the UK Parliamentary Office of Science and Technology, argues that water resource management should not be overlooked in plans for climate change adaptation in Africa. Africa is vulnerable to climate change impacts which are, in large part, connected by water. Rainfall is uneven and unpredictable across different parts of the continent and varies dramatically by ...

Jul. 1, 2011

By SciDev.Net

Autonomous intake selection optimisation model for a dual source drinking water treatment plant

The Mudgeeraba drinking water treatment plant, in Southeast Queensland, Australia, can withdraw raw water from two different reservoirs: the smaller Little Nerang dam (LND) by gravity, and the larger Advancetown Lake, through the use of pumps. Selecting the optimal intake is based on water quality and operators' experience; however, there is potential to optimise this process. In this study, ...

Jun. 16, 2017

By IWA Publishing

A decision support procedure for integrative management of dammed raw water reservoirs

Dammed drinking water reservoirs with their catchment areas and the downstream rivers are dynamic systems that change permanently under the influence of many factors. Their multifunctional use for drinking water supply, flood control, energy production, nature conservation and recreation as well as ecological constraints for the rivers downstream requires an integrative management considering ...

Apr. 3, 2013

By IWA Publishing

Importance of Inspecting Reservoirs

Inspecting Reservoirs – what is the importance of them, why they are inspected, and how ROVs help pave the way for low-cost, regular maintenance. What is a Reservoir? Deriving from the French word réservoir meaning “storehouse,” a reservoir is exactly that – a storage place for water. More often than not, these bodies of water are manufactured for a desired use ...

Jan. 4, 2017

By Deep Trekker Inc.

Evaluation of contemporary evolutionary algorithms for optimization in reservoir operation and water supply

This study evaluates three contemporary evolutionary algorithms, namely, shark, genetic, and particle swarm algorithms, for optimization in reservoir operation and water supply. The Klang gate dam in Malaysia is selected as the case study to optimize reservoir operation. The key objective of this study is the minimization of water deficits based on demands and released water. The global ...

Nov. 15, 2017

By IWA Publishing

ROV Inspections of Water Towers: Underwater Drone Used to Save Diver’s Time

Mountain West Commercial Diving currently uses their Deep Trekker underwater drone to conduct ROV inspections or potable water towers. Aim to exceed the client’s expectation while adhering the highest standards in industry compliance and safety; that is the goal of Mountain West Commercial Diving (MWCD). Based out of Hazelton, Idaho, MWCD has over 25 years of experience in successfully ...

Apr. 13, 2017

By Deep Trekker Inc.

Lake supply & treatment expansion

Client: City of Fort Smith Completion Date: 2003 - Design2006 - Lake construction2008 - Plant construction Services Provided Supply reservoir enlargement 30 million-gallon-per-day (MGD) water plant renovation New 20-MGD dual train water plant addition Pulsating clarifiers Auto-backwash cluster filters Corrosion control Project Summary Burns & McDonnell, together with Shannon & ...

Sep. 21, 2009

By Burns & McDonnell

Texas Earthen Dam Seepage Flow Path Study - Case Study

Willowstick characterizes seepage flow paths through through the dam Background An engineering company was set to build a new outlet structure for a reservoir. They had been monitoring the dam for seepage and wanted to gain a better understanding of where seepage was occurring. Of significant importance to the client was the desire to characterize any preferential seepage flow paths along the ...

Apr. 19, 2019

By Willowstick Technologies LLC

SRS Crisafulli Survey: Silty Rivers of the World

SRS Crisafulli Survey: Silty Rivers of the World In Steven Solomon's book Water, The Epic Struggle for Wealth, Power and Civilization, he lists some of the world's siltiest rivers. Which river do you think is the most silty? Let's take a closer look at 5 silty rivers. A quick search on Wikipedia revealed the following data. The Colorado River The Colorado River is the principal river of ...

Jun. 6, 2012

By SRS Crisafulli, Inc.

Drought hits capital of Philippines

Manila, with a population that has doubled since 1985, has no fallback as monsoon fails to materialize On July 11, the reservoir of the hydroelectric Angat Dam, which supplies Manila and other nearby areas with water, reached the critically low level of 160 m. Its normal minimum operating level is 180 m, and its normal high water level is 210 m. In the early part of March, water taps began to ...

Aug. 19, 2019

By Fluence Corporation

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