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


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.