Storm Drain Detectives

Stormwater is rainwater that hits the ground, and then flows over streets and sidewalks, picking up pollutants like oil, trash, soaps, feces, and tire dust. This "runoff" enters storm drains in neighborhoods and flows directly into the Mokelumne River, harming aquatic life and degrading water quality. Agricultural runoff (primarily nitrogen-laden fertilizers) adds nitrates to the water, fueling algae blooms that suffocate fish and other organisms. Drought worsens the problem by concentrating pollutants in reduced water flow. In some San Joaquin Valley towns, nitrate pollution has already made drinking water unsafe due to increased risk of cancer.

The Stormwater Detectives program, established in 2001, helps monitor these changes, with teachers, students, and community members tracking water quality, especially where stormwater enters the river. This is why managing trash around the lake is so important. You can help by disposing of trash properly, using commercial car washes, and picking up pet waste. Learn more about the Stormwater Detectives program - and how to get involved here.

Watch more on how the City of Lodi prevents local trash from entering the Mokelumne River.