Santa Ana Region Basin Plan
The 1995 Water Quality Control Plan for the Santa Ana River Basin (Region 8) was updated in February 2008, June 2011, and February 2016.
Important! Please review Notes about the February 2008, June 2011, and February 2016 Basin Plan updates.
Acrobat Reader is required to view the document. A link to download Acrobat Reader is available below. Some chapters are large an may take a few minutes to load, please be patient.
The Santa Ana River Basin Water Quality Control Plan is also available to download as a zip file. It is all of the files listed above. The file is approxiamtely 12MB and a compression utility is needed to unzip and open.
- State Water Resources Control Board approval of the following Basin Plan Amendments (September 20, 2018)
- Basin Plan Amendment to Incorporate Total Maximum Daily Loads for Selenium in Freshwater: Newport Bay Watershed, Orange County, California
- Basin Plan Amendments to Revise Compliance Schedule for SHEL TMDL. OAL approval September 24, 2018
- Basin Plan Amendments to Revise Schedule for SHEL TMDL. EPA Approval October 12, 2018
Additional Basin Plan Information & Reports
2015 Basin Plan Triennial Review - Adopted July 24, 2015
Final Basin Plan Amendment Resolution No. R8-2015-0085 adopting the Triennial Review Priority List and Work Plan
- Orange County Coastkeeper
- Orange County Water District
- Irvine Ranch Water District
- Lake Elsinore & San Jacinto Watersheds Authority
- Santa Ana Watershed Project Authority
Regional Board staff Responses to Comments
Basin Plan Maps - Maps showing all water bodies listed in the Water Quality Control plan for the Santa Ana River Basin - Regional 8, also known as the Basin Plan (draft work product, to be used for informational purposes only).
Recomputation of Ambient Water Quality in the Santa Ana Watershed for the Period 1987 to 2006 -
Final Technical Memorandum (Basin Plan Amendment Required Monitoring and Analyses)
Amendments to the Basin Plan
Resolution No. R8-2017-0036 Resolution Amending the Water Quality Control Plan for the Santa Ana River Basin to Revise the Water Quality Objective for Nitrate-as-Nitrogen in the Chino-South Groundwater Management Zone
Resolution No. R8-2017-0019 Resolution Approving Amendments to the Basin Plan to: Revise Compliance Schedule for Fecal Coliform Total Maximum Daily Load (TMDL) for Shellfish Harvesting (SHEL) in Newport Bay; Revise SHEL Beneficial Use Definition; Add Antidegradation Targets for Non-contact Water Recreation (REC2) Only Waters; Add Certain Waters to Table 3-1 and Designate Beneficial Uses for Those and Other Select Waters; Add Chapter 6 TMDLs and Introductory Narrative, and Revise Subsequent Chapter Numbering; Add Fecal Indicator Bacteria Footnote to Chapters 4 and 5 (Note: amendments pending USEPA approval)
Resolution No. R8-2017-0014 Amendment to the Water Quality Control Plan for the Santa Ana River Basin to Incorporate Total Maximum Daily Loads for Selenium in Freshwater, Newport Bay Watershed, Orange County, California (Note: amendment pending OAL and USEPA approval)
Resolution No. R8-2012-0001 Resolution Approving Amendments to the Basin Plan Pertaining to Bacteria Quality Objectives and Implementation Strategies, Recreation Beneficial Uses,
the Addition and Deletion of Certain Waters Listed in the Basin Plan and Designation of Appropriate Beneficial Uses, and Other Minor Modifications
RESOLUTION NO. R8-2011- 0037 Resolution Revising the Amendment to the Water Quality Control Plan for the Santa Ana River Basin to Incorporate Organochlorine Compounds Total Maximum Daily Loads (TMDLs) for San Diego Creek, Upper and Lower Newport Bay, Orange County, California, Adopted by Resolution No. R8-2007 -0024
Resolution No. R8-2010-0039 Resolution Amending the Water Quality Control Plan for the Santa Ana River Basin to Incorporate "Maximum Benefit" Total Dissolved Solids (TDS) and Nitrogen Objectives and a Maximum Benefit Salt Management Plan for the San Jacinto Upper Pressure Management Zone
Resolution No. R8-2006-0024 Amending the Water Quality Control Plan for the Santa Ana River Basin to Include a Waste Discharge Prohibition on the Use of Onsite Septic Tank-Subsurface Disposal Systems in the Quail Valley Area of Riverside County
Resolution No. R8-2006-0023 Resolution Amending the Water Quality Control Plan for the Santa Ana River Basin to Incorporate a Nutrient Total Maximum Daily Load (TMDL) for Dry Hydrological Conditions for Big Bear Lake
Additional planning resources that have not been adopted into the Basin Plan
For additional information regarding the Basin Plan please contact Lauma Willis at (951) 782-4920