Total Maximum Daily Load Program

Under Section 303(d) of the 1972 Clean Water Act, states, territories and authorized tribes are required to develop a list of water quality limited segments. These waters on the list do not meet water quality standards, even after point sources of pollution have installed the minimum required levels of pollution control technology. The law requires that these jurisdictions establish priority rankings for water on the lists and develop action plans, called as Total Maximum Daily Loads (TMDL), to improve water quality.

On July 25, 2003 USEPA gave final approval to California's 2002 Section 303(d) List of Water Quality Limited Segments.

Final 2002 Clean Water Act Section 303(d) List of Water Quality Limited Segments:

• Statewide (View Entire List)

• Region 1 (North Coast)

• Region 2 ( San Francisco)

• Region 3 (Central Coast)

• Region 4 (Los Angeles)

• Region 5 (Central Valley)

• Region 6 (Lahontan)

• Region 7 (Colorado River)

• Region 8 (Santa Ana)

• Region 9 (San Diego)

Other 2002 Lists (Entire State):

• Enforceable Program List
• Monitoring List
• TMDL Completed List

Downloadable Files for 2002 CWA Section 303(d) List of Water Quality Limited Segments:

• Download Electronic Versions of 2002 303(d) List (Entire State)
  [ Excel File ] [ DBaseIV File ]
  
  
• Download 2002 303(d) List GIS Files and 303(d) List Information Tables (zipped files)
  
  
• Download or View Maps of 2002 Listed Waters (under construction)
  
  
• Download Summary Tables of 303(d) List (total water bodies listed etc.)

Supporting Documentation for Final 2002 303(d) List

USEPA Decision:

• July 25, 2003 Final Decision Letter to SWRCB from USEPA, Region IX
• Enclosure to USEPA Letter to SWRCB Containing Public Comment Responsive Summary