Carlsbad Water Quality Improvement Plan


Agencies involved in the development of the Carlsbad Water Quality Improvement Plan (WQIP) include the Cities of Carlsbad, Encinitas, Escondido, Oceanside, San Marcos, Solana Beach, Vista, and the County of San Diego. 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 Carlsbad 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 Carlsbad WQIP on November 22, 2016. In July 2017, a public process was initiated to consider proposed updates to the Carlsbad WQIP. The process included a consultation panel public meeting and a public review period to provide comments on proposed updates. As a result, the Carlsbad WQIP was updated to include the hydromodification exemption for Escondido Creek and revisions identified in the Fiscal Year 2016-2017 Carlsbad WMA WQIP Annual Report submitted January 30, 2018. The updated Carlsbad WQIP was finalized in May 2018 and the resulting WQIP and appendices are available at the links below:

Final Carlsbad Water Quality Improvement Plan and Appendices (May 2018 Update)

Previous WQIPs, appendices and the acceptance letter can be found in the document archive.

For Copermittee contact information, please check out the Carlsbad 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 Carlsbad WMA, please check out our calendar.


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

Shapefiles were used for mapping purposes and data presented reflect information available at the time of map creation. Data in the shapefiles may have been modified since that time. The data represented in the shapefiles are to be used for general information purposes only. The dimensions and alignments of boundaries of mapping units in these files are approximations only, and should not be considered authoritative or sufficient for determining the location or extent of the subject mapped features.

Carlsbad WQIP GIS Files

Carlsbad WQIP FY17 Annual Report GIS Files

Carlsbad WQIP FY18 Annual Report GIS Files

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

For GIS data used to develop maps in agencies’ Jurisdictional Urban Runoff Management Programs (JRMP), please visit the JRMP page.

Carlsbad 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.

Carlsbad (CAR) Watershed Management Area Analysis (WMAA) Draft Report (October 3, 2014 )

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.