Total Maximum Daily Load (TMDL) Program


Total Maximum Daily Loads (TMDL) are water quality restoration plans required by the Federal Clean Water Act (CWA) to ensure the attainment of water quality standards in impaired surface water bodies. Impaired surface waters are identified on the CWA 303(d) list. Section 303(d) listings for the Lahontan Region begin on Row 2737 of the 2010 Section 303(d) List Excel File. View the draft 2012 Integrated Report and 303(d) list information.

The TMDL Program addresses impaired waters of the Region and satisfies Clean Water Act Section 303 and 305 requirements. The TMDL Program resources are a combination of funds from the state's Waste Discharge Permit Fee account and federal TMDL development program. The state funds 4.6 PY for TMDL and Basin Planning work and the federal program funds 0.9 PY for TMDL development. TMDL staff assesses waterbodies for water quality impairments, determines possible sources, types and magnitude of impairments, and prepares plans to restore beneficial uses of the impaired waterbodies through TMDLs and other means.

The TMDL Program Fact Sheet provides more information on the Goals, Accomplishments, and Performance Targets.

If you have questions about the Lahontan Region's 303(d) List or the listed projects below, please contact Daniel Sussman.

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Total Maximum Daily Load Projects

Below are the TMDL development projects that the Lahontan Regional Board is currently working on or has completed. Projects have links to documents or other information available for viewing or downloading.

TMDLs Documents and Implementation

Blackwood Creek Sediments
Adopted by Lahontan Region October 2007 and approved July 11, 2008 by USEPA

Bodie Creek Metals
Bridgeport Reservoir Nutrient
Bronco Creek Sediment
Adopted by Lahontan Region May 2008
Crowley Reservoir Nutrient
Donner Lake PCBs
Gray Creek Sediment
Adopted by Lahontan Region May 2008
Haiwee Reservoir Copper
Heavenly Valley Creek Sediment
Adopted by Lahontan Region January 2001 and approved September 30, 2002 by USEPA
Hot Springs Canyon Creek (Bodie Hills)
Delisted in November 2010 by USEPA.
Indian Creek Reservoir Phosphorous
Adopted by Lahontan Region July 2002 and approved in 2003 by USEPA
Lake Tahoe
Sodium-related Standards for the Carson and Walker River Watersheds
Squaw Creek Sediment
Adopted by Lahontan Region April 2006 and approved July 27, 2007 by USEPA
Susan River Toxicity
Truckee River Sediment
Adopted by Lahontan Region May 2008
Ward Creek Sediment