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Toxic Algae in Lake Needwood
Lake Needwood is a 75 acre reservoir located in Derwood, Maryland. The lake was created to provide flood control to Rock Creek and to protect the creeks water quality by acting as a retention basin to trap sediment from stormwater runoff.

This past fall Lake Needwood posted warning signs to “Avoid contact with Lake Water” after testing positive for toxic algae. Harmful algal blooms are often triggered by excessive levels of nutrients such as nitrogen and phosphorus. The excess nutrients come from many sources such as aquatic plants and fertilizers and stimulate the growth of algae.

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Ban on Use of Chemical Fertilizers and Pesticides in Dal Lake - The Jammu and Kashmir High Court on called for a blanket ban on the use of chemical fertilizers and pesticides in Dal Lake. The direction was passed in view of a fresh report suggesting that usage of chemical fertilizers and pesticides in farming had badly deteriorated the health of the lake.


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