The City of Manteca operates and maintains the Storm Drain System, which serves the community. The City's Storm Drainage System consists of approximately 210 miles of pipeline, 70 pump stations, and 66 detention basins. When it rains, the runoff flows through this system, into South San Joaquin Irrigation District drains and laterals, and eventually into the San Joaquin River.

The City of Manteca has a Storm Drain Master Plan (SDMP) to provide storm drainage design criteria for new development and redevelopment projects. The SDMP identifies and analyzes the existing drainage deficiencies as of 2012 and provides the storm drainage concepts for the future developments required to serve the City at buildout of the General Plan 2023.

The SDMP is available to review on the Storm Drain Master Plan page.

Stormwater Pollution Prevention

The City of Manteca is required by the Environmental Protection Agency, as part of the National Pollutant Discharge Elimination System (NPDES), to have a Storm Water Management Program (SWMP). The purpose of the program is to limit to the maximum extent practicable the discharge of pollutants into the waters of the United States.

City of Manteca Storm Water Management Program

Please Prevent Pollution -

Only Rain Down the Drain!

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