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Plans & Reports

Water Quality Improvement Plans (WQIP)

The Storm Water Division is currently working together with other jurisdictions (Responsible Agencies) to develop Water Quality Improvement Plans (WQIPs) for six watersheds in the San Diego region. The goal of the WQIPs is to protect, preserve, enhance, and restore water quality of receiving water bodies. This goal will be accomplished through an adaptive planning and management process that identifies the highest priority water quality conditions within a watershed and implements strategies to achieve improvements in the quality of discharges from the Responsible Agencies' storm drain systems.

The City of San Diego is the lead on the WQIP development for the San Dieguito, Los Penasquitos, and Mission Bay watersheds. The City is also a participating agency in the San Diego River, San Diego Bay, and Tijuana River watersheds. The WQIP development for all watersheds is a two year process which will begin in the Fall of 2013 and end in the Summer of 2015. For more information on the plans, schedules and input opportunities, please click on the below link:

To support the development of the Water Quality Improvement Plans, the City performed a literature review and accompanying analysis to quantify potential pollutant load reductions associated with certain non-structural best management practices (BMPs) or strategies. The results are summarized in the following technical memorandum.

Watershed Asset Management Plan

The Storm Water Division has prepared the following Watershed Asset Management Plan to identify the broad investments required to maintain the City's storm water management system. The plan is consistent with the City's general asset management practices and is one of the first comprehensive asset management planning efforts in the storm water field that addresses both flood risk management and storm water quality. The Plan incorporates the strategies identified in the Comprehensive Load Reduction Plans also available on this page as a foundation for meeting the requirements and compliance standards of the new Municipal Separate Storm Sewer System (MS4) permit issued by the Regional Water Quality Control Board on May 8, 2013.

Comprehensive Load Reduction Plans (CLRP)
(2013 Update)

The following Comprehensive Load Reduction Plans (CLRPs) are the second phase of an ongoing effort to identify the projects and funding levels needed to comply with storm water regulations established by the Regional Water Quality Control Board. These updated plans expand on the methodology and rationale presented in the initial CLRP documents filed with the Board on October 4, 2012 (available below). The City will continue to refine the project list and cost estimate presented in these plans and expects to post further updates at a future date. The City encourages public evaluation of these documents and welcomes questions, comments and suggestions for improvements.

Comprehensive Load Reduction Plans (CLRP)

Pilot Projects

  • Projects used in the development of Comprehensive Load Reduction Plans (CLRPs) can be found here.

Best Management Practices (BMP) Inspection and Maintenance Workshop

On April 6, 2011 the City offered a free workshop on maintenance practices for Low Impact Development BMPs. The handout may be downloaded from the link below.

Bacteria-1 TMDL

Areas of Special Biological Significance (ASBS)

Master Storm Water System Maintenance Program

The City of San Diego has adopted a Master Storm Water System Maintenance Program (MSWSMP) for flood control facilities in neighborhoods across the City. The Master Program will allow the City to better identify flood control channels requiring maintenance services over the next five years. Each fiscal year, the City will identify a small group of channels that have deposits of sediment and overgrowth of vegetation requiring maintenance to restore flood control capacity.

Strategic Plan for Watershed Activity Implementation


Water Quality Studies


  • EPA STAG Grant - $873,000 for Kellogg Park Porous Pavement Infiltration Project
  • DWR Proposition 50 - $275,000 for LID Implementation Projects in the Chollas Watershed
  • SWRCB Cleanup and Abatement Grant - $700,000 for Tijuana River Valley Restoration Projects
  • DWR IRWM Proposition 84 Grant - $650,000 for Bannock Avenue LID Project in the Tecolote Watershed
  • SWRCB Proposition 84 Planning and Monitoring Grant - $685,055 for Test of Concept at 43rd Street and Logan Avenue