Social distancing is in effect due to the COVID-19 pandemic. Most copermittee staff are teleworking and available by email. To email the watershed representative for your jurisdiction, please visit our contact us page. For more information and resources on COVID-19 in the San Diego region, please visit


Call for Projects – Santa Margarita WMAA

By Rouya Rasoulzadeh | February 21, 2017 | 0 Comments

Santa Margarita WMAA Call for Projects The County of San Diego is preparing a list of candidate projects to be included in the Santa Margarita River Watershed Management Area Analysis (WMAA), which is an optional attachment to the Santa Margarita River Water Quality Improvement Plan. Please see attached Call for Projects letter for details. Project suggestions […]

Infiltration Infeasibility Documentation Guidelines from RWQCB

By Reynaldo | September 25, 2017 | 0 Comments

The letter that the RWQCB wrote to describe the documentation needed to support the infeasibility of infiltration onsite has been posted here: Priority Development Project Infiltration Infeasibility Documentation Guidelines

SDHM 3.1 Training Slides Posted

By Reynaldo | July 24, 2017 | 0 Comments

The May 2017 training presentation slides about the new version of the San Diego Hydrology Model (SDHM) 3.1 are now available for download here. The newest version of the model is also available here.

Otay River HMP Exemption

By Reynaldo | July 20, 2017 | 0 Comments

A portion of the Otay River was included as exempt from Hydromodification Management Plan requirements through the WQIP Annual Reporting process. The WMAA mapping has been updated to reflect this change. The PDFs of the data can be found on the WMAA page here. The GIS data is available here.

New BMP Maintenance Fact Sheets

By Reynaldo | March 22, 2017 | 0 Comments

New BMP Maintenance Fact Sheets have been been developed by the copermittees to inform anyone who is designing or maintaining BMPs within the County of San Diego. The fact sheets can be downloaded below.

Public Input Opportunity for the 2021 San Diego River Watershed Management Area Water Quality Improvement Plan Update

By theimgweb | November 9, 2020 | 0 Comments

The San Diego River Watershed Management Area (SDR WMA) jurisdictions are performing an update of the SDR WMA Water Quality Improvement Plan (WQIP). The focus of the update is the incorporation of Famosa Slough Alternative Total Maximum Daily Load (TMDL). The update of the San Diego River Watershed Management Area Water Quality Improvement Plan will […]