Stormwater Program

A Stormwater Management Plan (SWMP) was developed for and is being implemented within the jurisdictional limits of the City of Stockton (City) and the urbanized areas of San Joaquin County (County) within the Phase I National Pollutant Discharge Elimination System (NPDES) permit area. The SWMP represents the strategy for controlling the discharge of pollutants from the municipal storm drain system to the Maximum Extent Practicable (MEP) and includes a wide range of Best Management Practices (BMPs). 

The City of Stockton and San Joaquin County have developed a comprehensive approach for managing the implementation of the stormwater program within the Stockton Urban Area (SUA) as described by the Work Plan submitted to (and as approved by) the Regional Water Board as a part of the Notice of Intention application package.  During 2017-2018, the City and County implemented the stormwater program within the SUA consistent with the intent of the 2009 SWMP.  In 2018-2019, the City and County will continue to implement the stormwater program within the SUA as outlined by the Work Plan.

The SWMP consists of the six minimum control measures (or program elements) established by State Water Regional Control Board (SWRCB) for Phase II storm water discharges. Implementation of these program elements are expected to result in significant reductions of pollutants discharged into receiving water bodies. There are ten program elements contained in the County’s SWMP that are summarized below:

  • Program Management
  • Illicit Discharges
  • Public Education and Outreach
  • Municipal Operations
  • Industrial and Commercial
  • Construction
  • Planning and Land Development
  • Water Quality Monitoring Program
  • Water Quality Based Programs
  • Program Implementation & Reporting

Each program element contains BMPs necessary for proper storm water management. The BMPs contain specific tasks to meet the objective of that control measure. The County’s SWMP is intended to be a living document with BMPs added and deleted as new management practices arise and management practices are found not to work.

Stormwater Quality Control Criteria Plan

Effective January 2021, the Stormwater Quality Control Criteria Plan (SWQCCP) has new guidelines that directly impact region-wide construction projects. The San Joaquin County Department of Public Works and City of Stockton will host a series of virtual workshops to brief developers, planners, and engineers on these updates.

Frequently Asked Questions - Stormwater Quality Control Criteria Plan


Classroom Presentations

The San Joaquin County Stormwater Quality Program works with schools in the area through its outreach program by providing classroom or digital presentations to elementary school age children. This is a fun and interactive way to teach students about stormwater pollution where students learn about pollutants that harm our waterways and how they can protect their creeks and rivers. For more information please contact the Stormwater Manager at 209-468-3605.