Demonstration Urban Stormwater Treatment

The DUST Marsh System was contructed in the early 1980's near Coyote Hills Regional Park to test the effectiveness of man made wetlands on urban water treatment. Water from Crandall Creek was diverted into a small debris basin and then into two ponds. Water from the two ponds combine in a third pond before it heads off to the North Marsh of Coyote Hills Regional Park.

Since its construction scientists and other government agencies have maintained continuous study of the marsh. Sediments and other pollutants are tracked from several testing stations located along Crandall Creek and the DUST marsh. Scientists hope to find the sediments and pollutants left behind when the water exits the marsh and heads into the San Francisco Bay.