San Diego River Water Quality Improvement Plan

San Diego River Water Quality Improvement Plan 2017-07-06T10:02:31+00:00

San Diego River Water Quality Improvement Plan


Agencies involved in the development of the San Diego River Water Quality Improvement Plan (WQIP) include the Cities of El Cajon, La Mesa, Santee, San Diego, the County of San Diego, and the California Department of Transportation. The WQIP is a requirement of updated stormwater regulations adopted by the Regional Water Quality Control Board (Regional Board) according to Order No. R9-2013-0001, as amended by Order Nos. R9 2015-0001 and R9-2015-0100. The ultimate goal of the WQIP is to protect, preserve, enhance, and restore water quality of receiving water bodies. These improvements in water quality will be accomplished through an adaptive planning and management process that identifies the highest priority water quality conditions within the watershed and implements strategies to address them.

The San Diego River Water Quality Improvement Plan was originally submitted to the Regional Board on June 26, 2015, as required by the Municipal Permit. The WQIP was subsequently revised and resubmitted in order to incorporate comments received from the public and the Regional Board. Following further comments, the Regional Board issued an acceptance letter for the San Diego River WQIP on February 12, 2016. The resulting WQIP, appendices, and acceptance letter are available at the links below:

Final San Diego River Water Quality Improvement Plan (PDF)

Final San Diego River Quality Improvement Plan Appendices (PDF)

Regional Board Acceptance Letter for the San Diego River Water Quality Improvement Plan (PDF)

For Copermittee contact information, please check out the San Diego River Stakeholders page.

Current Events

As part of the adaptive management process and in order to discuss watershed-wide goals, strategies, and issues, Copermittees hold monthly workgroup meetings that are also open to the public. These meetings, along with their agendas, meeting summaries, and meeting materials, are linked to below. For additional current events pertaining to the San Diego River WMA, please see the San Diego River WMA Calendar.

SDR WMA WQIP Meeting Materials

San Diego River Meetings and Agendas Archive


Water Quality Data

Monitoring data used in the development of the WQIP can be found on the California Environmental Data Exchange Network (CEDEN) website,

Geographic Information System (GIS) Data

The majority of GIS data used to develop plans and reports can be found on the San Diego Geographic Information Source website at

For jurisdiction-specific data, please follow the links below or contact the appropriate stormwater Copermittee for additional resources.

City of San Diego
City of La Mesa
County of San Diego
City of Santee
City of El Cajon

San Diego River Watershed Management Area Analysis (WMAA) Data

Typically, the WMAA is presented as an appendix to each watershed’s WQIP; however, there is also a regional component to the WMAA. For the Regional WMAA, please check out our regional efforts.

San Diego River WMAA Draft Report (October 3, 2014) (PDF)

San Diego River WMAA Attachments (PDF)

San Diego River WMAA Attachment Figures 

Other Data

All data that were used to develop the WQIP but do not fit into one of the above categories can be found in the document archive.