RICHMOND, Va., May 11 (UPI) --
Numerous fish kills in the Shenandoah River can be traced to human activity, scientists in Virginia say.
The exact cause for a recent spate of fish deaths in the river has not been determined, but scientists say the deaths are likely related to urbanization of nature, The Washington Times said Sunday.
Scientists have been investigating whether sewage runoffs, occasional waste discharges or the over-development of the area shoreline could have caused the river's problems.
Robert Brent of the Virginia Department of Environmental Quality said the Shenandoah is among 650 water systems in the state targeted for additional research.
"We plan to address all 650 by 2010," Brent told the Times.
Brent said the river's water has also been designated a human health concern.© 2008 United Press International. All Rights Reserved.
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