Water Quality

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

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


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


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


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


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


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


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.


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


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


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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