The NIO study has shown a high level of pollution in the water body. “The lake has lost oxygen below the surface due to eutrophication and resultant decay of algae in the bottom layer.

Graduate student Brent Hughes examines algae (green sea lettuce) from Elkhorn Slough, an indicator of high nutrient levels. Photo by Monique Fountain. On this map of Elkhorn Slough estuary showing the ...

Lewis said he plans to stay active with the Summit Water Quality Committee, which remains focused on limiting phosphorus pollution and the excessive algae growth caused by eutrophication, when the ...