Adopted TMDLs

TMDLs Adopted by Regional Board

A TMDL project may consist of a single water body and pollutant, or a combination of multiple water bodies and pollutant listings to restore impaired water bodies. Below is a list of adopted TMDL projects by the San Diego Water Board. Click on the links to view documents, notices and other materials related to each project.

Adopted TMDLs Adoption Date
Chollas Creek Diazinon TMDL August 14, 2002
Rainbow Creek Nitrogen and Phosphorus TMDLs February 9, 2005
Shelter Island Yacht Basin Dissolved Copper TMDL February 9, 2005
Chollas Creek Copper, Lead, and Zinc TMDLs June 13, 2007
Indicator Bacteria: Revised Project I - Twenty Beaches and Creeks in San Diego Region (including Tecolote Creek) February 10, 2010
Indicator Bacteria: Project II - Baby Beach in Dana Point Harbor and Shelter Island Shoreline Park in San Diego Bay June 11, 2008
Los Peñasquitos Lagoon Sediment TMDL June 13, 2012
Approved Alternative Approach TMDLs Approval Date
Loma Alta Slough TMDL Phosphorus June 26, 2014
Famosa Slough Nutrient TMDL October 31, 2017
Santa Margarita River Estuary TMDL May 9, 2019
San Mateo Creek Invasive Species TMDL January 19, 2024