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    Water quality concerns associated with hydro plants include dissolved oxygen, total dissolved gas, sedimentation, and downstream water temperature effects.

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    Latest Water Quality News

    Washington issues water quality certificate for 9-MW Enloe

    07/18/2012

    The Washington Department of Ecology has issued final Clean Water Act Section 401 water quality certification for the proposed 9-MW Enloe hydroelectric project in eastern Washington.

    Groups hoping mussels will help improve habitat near Missouri's Bagnell Dam

    06/26/2012

    The release of about 3,000 freshwater mussels into the Lower Osage River is part of a larger effort to restore areas affected by Missouri's Bagnell Dam, which impounds water for the 230.75-MW Osage project.

    Production on India's Ganga River could be cut for environmental reasons

    06/08/2012

    Owners of all hydroelectric projects on India's Ganga River might be asked to reduce their power generation in an effort to improve the river's flow, HydroWorld.com has learned.

    Water Quality: Method for Predicting Oxygen Transfer at Low-Head Dams

    06/01/2012 A new predictive model can lead to a better prediction of gas transfer efficiency at low-head dams, which then allows the owners/operators of these structures to more reliably determine expected downstream dissolved oxygen levels.

    Exploring the Reasons behind Dam Removal

    04/01/2012 For many dams currently being removed in the U.S., the primary reason behind this work is the need to protect fish and restore their habitat. This article provides case studies of the removals under way and the context under which these decisions were made.

    U.S. seeks reservoir nutrient supplementation at 402-MW Dworshak

    03/05/2012

    The U.S. Army Corps of Engineers seeks bids from consultants to manage a pilot nutrient supplementation program for the 650-foot-deep reservoir of the 402-MW Dworshak hydroelectric project in Idaho.

    U.S. seeks firms to control invasive mussels at Lower Colorado dams

    02/15/2012

    The Bureau of Reclamation seeks information from firms capable of providing environmentally compatible control of invasive quagga and zebra mussels on the Lower Colorado River at 2,078-MW Hoover Dam in Arizona and Nevada, 255-MW Davis Dam in Arizona, and 120-MW Parker Dam in California.

    Industry News

    01/01/2012 Agriculture Department awards rural energy funds to four projects

    Reclamation Tackles Quagga and Zebra Mussel Issues

    12/01/2011 A multi-pronged effort under way by the Bureau of Reclamation is focused on finding ways to combat the presence of quagga and zebra mussels in its reservoirs in the western U.S. Much of this work can be applied anywhere mussels are found.

    Dominican Republic seeks studies of hydro reservoirs

    07/13/2011

    The Dominican Republic's hydraulic resources institute invites expressions of interest to perform bathymetric surveys and water quality and sedimentation studies of eight hydropower reservoirs in the Dominican Republic.

    FERC receives 401 certification for removal of 14.7-MW Condit Dam

    10/28/2010

    Project operator PacifiCorp has submitted to the Federal Energy Regulatory Commission a long-awaited Washington state water quality certification, a prerequisite to FERC approval of PacifiCorp's plan to remove 14.7-MW Condit Dam as part of a 1999 settlement agreement.

    Equipment: Aerating Turbines for Duke Energy's New Bridgewater Powerhouse

    04/01/2010 Duke Energy Carolinas LLC plans to install aerating turbines in a new 28-MW powerhouse for the Bridgewater project.

    FERC rejects challenge to 401 conditions for 210-MW Yadkin

    10/23/2009

    The Federal Energy Regulatory Commission has rejected a challenge by Alcoa Power Generating to North Carolina’s water quality certification for Alcoa's 210-MW Yadkin hydroelectric project.

    North Carolina governor continues bid to take over 210-MW Yadkin

    10/05/2009

    Lawyers for North Carolina Gov. Beverly Perdue have filed a motion urging the Federal Energy Regulatory Commission to reject Alcoa Power Generating's relicense application for the 210-MW Yadkin hydroelectric project.

    Duke appeals denial of CWA 401 certification for 724.74-MW Catawba-Wateree

    09/28/2009

    Hydro operator Duke Energy has appealed the state of South Carolina’s denial of Clean Water Act certification for the relicensing of Duke’s 724.74-MW Catawba-Wateree hydroelectric project in South Carolina and North Carolina.

    DAM DECOMMISSIONING: Removing Marmot Dam

    09/01/2009 As part of the ongoing work to decommission the 22-MW Bull Run project, Portland General Electric completed removal of the 47-foot-high, 195-foot-long Marmot Dam, a roller-compacted-concrete structure, in 2008.

    FERC issues final EIS backing relicense of 724.74-MW Catawba-Wateree

    08/10/2009

    The Federal Energy Regulatory Commission has issued a final environmental impact statement endorsing the relicensing of Duke Energy’s 724.74-MW Catawba-Wateree hydroelectric project with additional mitigation proposed by FERC staff.

    Bosnia, Croatia seek basin management plan

    06/26/2009

    Bosnia and Herzegovina, and Croatia invite expressions of interest from consultants to develop a management plan for the Neretva and Trebisnjica river basins.

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