SAN ANTONIO (AP) — Going green isn't always good.
Greenish algae has shown up at the new $72 million north expansion of San Antonio's tourist-popular River Walk.
The expansion, which includes barge traffic and and plans for retail areas, opened in late May.
San Antonio River Authority general manager Suzanne Scott told KSAT-TV that the algae is an "eyesore," but is no health risk and does not indicate water quality problems.
Authority officials say the water in the San Antonio River is recycled, but the algae is created when combined with direct sun, the heat and low flow.
Scott says scientists are working to control the algea by increasing the flow of the river through flood control, plus using chemicals to slow the green growth.
Copyright 2009 The Associated Press.
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