Total Maximum Daily Loads (TMDLs)

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    No. Resolution No. Watershed Pollutant Resolution Name Staff Contact Last Updated New Posting
    Click header row to order by specific field
    1 R22-005 Dominguez Channel Multiple Dominguez Channel and Greater Los Angeles... more
    • Aug 28, 2025
    2 R24-003 Marina del Rey Toxics Reconsideration of Marina del Rey Harbor... more
    • Nov 1, 2024
    3 RXX-XXX Dominguez Channel Bacteria Dominguez Channel and Estuary Indicator... more
    • Oct 10, 2024
    4 R22-002 Los Cerritos Channel Bacteria Los Cerritos Channel and Estuary, Alamitos... more
    • Sep 10, 2024
    5 RXX-XXX Ventura Coastal Trash Ormond Beach Trash TMDL
    • Jul 18, 2024
    6 R19-005 Ventura River Trash Reconsideration of the Ventura River Estuary... more
    • Jun 1, 2022
    7 R19-005 Los Angeles River Trash Reconsideration of the Legg Lake Trash TMDL
    • Jun 1, 2022
    8 R19-005 Santa Clara River Trash Reconsideration of the Lake Elizabeth, Munz... more
    • Jun 1, 2022
    9 R19-004 Dominguez Channel Trash Reconsideration of the Machado Lake Trash... more
    • Jun 1, 2022
    10 R19-004 Santa Monica Bay Debris Reconsideration of the Santa Monica Bay... more
    • Jun 1, 2022
    11 R21-001 Various Various Amendments to the Water Quality Control Plan... more
    • May 2, 2022
    12 R18-006 Malibu Creek Trash Reconsideration of the Malibu Creek Trash... more
    • May 6, 2020
    13 R18-005 Calleguas Creek Trash Reconsideration of the Revolon... more
    • May 6, 2020
    14 RXX-XXX Misc Ventura Coastal Bacteria Ventura Harbor Keys Bacteria TMDL
    • Feb 21, 2018
    15 RXX-XXX Misc Ventura Coastal Bacteria Ventura County Coastal Beaches Bacteria TMDL
    • Feb 21, 2018
    16 R16-006 Santa Clara River Nutrients Santa Clara River Lakes Nutrients TMDL
    • Jun 27, 2017
    17 R16-007 Calleguas Creek Metals Reconsideration of the TMDLs for Metals and... more
    • Jun 23, 2017
    18 R16-009 Malibu Creek Multiple Implementation Plan for the Total Maximum... more
    • May 16, 2017
    19 R13-004 San Gabriel River Metals Implementation Plans for the Total Maximum... more
    • May 11, 2017
    20 R15-004 Los Angeles River Metals Basin Plan amendment to adopt site-specific... more
    • Dec 12, 2016
    21 R15-006 Ballona Creek Trash Reconsideration of Ballona Creek Trash TMDL
    • Jun 30, 2016
    22 R15-006 Los Angeles River Trash Reconsideration of Trash TMDL for Los... more
    • Jun 30, 2016
    23 R15-005 San Gabriel River Bacteria TMDL for Indicator Bacteria in the San... more
    • Jun 14, 2016
    24 R13-010 Ballona Creek Toxics Reconsideration of Ballona Creek Estuary... more
    • Oct 26, 2015
    25 R13-010 Ballona Creek Metals Reconsideration of Ballona Creek Metals TMDL
    • Oct 26, 2015
    26 R14-004 Marina del Rey Toxics Reconsideration of Marina del Rey Harbor... more
    • Oct 16, 2015
    27 R14-010 Santa Clara River Chloride Santa Clara River Chloride TMDL Revision &... more
    • Apr 28, 2015
    28 R13-004 Los Cerritos Channel Metals Implementation Plans for the Total Maximum... more
    • Oct 13, 2014
    29 R12-010 Los Angeles River Nutrients Reconsideration of Los Angeles River... more
    • Aug 7, 2014
    30 R12-009 Malibu Creek Bacteria Reconsideration of Certain Technical Matters... more
    • Jul 2, 2014
    31 R12-008 Ballona Creek Bacteria Reconsideration of Certain Technical Matters... more
    • Jul 2, 2014
    32 R12-007 Multiple Bacteria Reconsideration of Certain Technical Matters... more
    • Jul 2, 2014
    33 2008-012 Santa Clara River Chloride Reconsideration of the Upper Santa Clara... more
    • Aug 6, 2013
    34 R12-011 Ventura River Algae Ventura River Algae TMDL
    • Jun 28, 2013
    35 R10-007 Los Angeles River Bacteria Los Angeles River Bacteria TMDL
    • Mar 23, 2012
    36 R11-008 Dominguez Channel Multiple Los Angeles and Long Beach Harbors Toxic and... more
    • Mar 23, 2012
    37 R10-006 Santa Clara River Bacteria Santa Clara River Bacteria TMDL
    • Mar 21, 2012
    38 R10-010 Santa Monica Bay Debris Santa Monica Bay Nearshore Debris TMDL
    • Mar 20, 2012
    39 R10-008 Dominguez Channel Toxics Machado Lake Toxics TMDL
    • Mar 20, 2012
    40 R10-003 Los Angeles River Metals Reconsideration of Los Angeles River Metals... more
    • Nov 3, 2011
    41 R09-005 LA Co. Coastal Streams Multiple Colorado Lagoon Pesticides, PAH's, PCB,... more
    • Jul 28, 2011
    42 R09-006 Misc Ventura Coastal Multiple McGrath Lake PCBs, Pesticides and Sediment... more
    • Jun 30, 2011
    43 2006-014 San Gabriel River Metals San Gabriel River Metals TMDL
    • No contact available
    • Nov 29, 2010
    44 NA Malibu Creek Multiple Malibu Creek Nutrient and Bacteria TMDL
    • No contact available
    • Nov 29, 2010
    45 NA Los Cerritos Channel and Alamitos Bay WMA Metals Los Cerritos Channel TMDL for Metals
    • No contact available
    • Nov 29, 2010
    46 2008-007 Malibu Creek Trash Malibu Creek Trash TMDL
    • Jul 7, 2009
    47 2008-006 Dominguez Channel Nutrients Machado Lake Nutrient TMDL
    • Mar 11, 2009
    48 2007-017 Misc Ventura Coastal Bacteria Harbor Beaches of Ventura County Bacteria... more
    • Dec 18, 2008
    49 2007-016 Calleguas Creek Salts Calleguas Creek Watershed Salts TMDL
    • Dec 2, 2008
    50 2007-015 Ballona Creek Metals Ballona Creek Metals TMDL
    • Oct 31, 2008
    51 R2007-014 Los Angeles River Metals Los Angeles Metals TMDL
    • Oct 31, 2008
    52 2008-009 Calleguas Creek Nutrients Revision of WLAs for Calleguas Creek... more
    • Sep 29, 2008
    53 R07-012 Los Angeles River Trash Trash TMDL for the Los Angeles River... more
    • Sep 3, 2008
    54 2006-016 Santa Clara River Salts Upper Santa Clara River Chloride TMDL... more
    • Jun 12, 2008
    55 2006-011 Ballona Creek Bacteria Ballona Creek, Ballona Estuary, and... more
    • May 8, 2008
    56 2007-010 Los Angeles River Trash Legg Lake Trash TMDL
    • Mar 18, 2008
    57 2007-006 Dominguez Channel Trash Machado Lake Trash TMDL
    • Mar 6, 2008
    58 2007-008 Ventura River Trash Ventura River Estuary Trash TMDL
    • Mar 6, 2008
    59 2007-007 Calleguas Creek Trash Revolon Slough & Beardsley Wash Trash TMDL
    • Mar 6, 2008
    60 2007-009 Santa Clara River Trash Lake Elizabeth, Munz Lake, Lake Hughes Trash... more
    • Mar 6, 2008
    61 2006-012 Calleguas Creek Metals Calleguas Creek Watershed Metals TMDL
    • Mar 26, 2007
    62 2005-008 Ballona Creek Toxics Ballona Creek Estuary Toxic Pollutants
    • Nov 11, 2006
    63 2006-013 Los Angeles River Trash Proposed Resolution to set aside the Los... more
    • Jul 17, 2006
    64 2006-006 Santa Monica Bay Bacteria Santa Monica Bay Beaches Wet Weather... more
    • Apr 6, 2006
    65 2006-007 Santa Monica Bay Bacteria Santa Monica Bay Beaches Wet Weather... more
    • Apr 6, 2006
    66 2006-008 Santa Monica Bay Bacteria Santa Monica Bay Beaches Wet Weather... more
    • Apr 6, 2006
    67 2006-009 Marina del Rey Bacteria Marina del Rey Harbor Mothers' Beach and... more
    • Apr 6, 2006
    68 2006-005 Santa Monica Bay Bacteria Santa Monica Bay Beaches Wet Weather... more
    • Apr 6, 2006
    69 2005-010 Calleguas Creek Toxics Calleguas Creek OC Pesticides & PCBs TMDL
    • Mar 24, 2006
    70 2005-009 Calleguas Creek Toxicity Calleguas Creek Toxicity TMDL
    • Mar 24, 2006
    71 2005-012 Marina del Rey Toxics Marina del Rey Harbor Toxics TMDL
    • Mar 22, 2006
    72 2004-019R Malibu Creek Bacteria Malibu Creek Bacteria TMDL
    • Jan 24, 2006
    73 2004-004 Santa Clara River Salts Upper Santa Clara River Chloride TMDL
    • May 4, 2005
    74 2004-011 Los Angeles Harbor Bacteria Los Angeles Harbor Bacteria TMDL
    • Mar 10, 2005
    75 2004-023 Ballona Creek Trash Ballona Creek Trash TMDL-Revision
    • Feb 8, 2005
    76 2003-016 Los Angeles River Nutrients Los Angeles River Nutrient TMDL (Revision of... more
    • Mar 23, 2004
    77 2003-011 Santa Clara River Nutrients Santa Clara River Nutrients TMDL
    • Mar 23, 2004
    78 2003-009 Los Angeles River Nutrients Los Angeles River Nutrients TMDL
    • Mar 23, 2004
    79 2003-012 Marina del Rey Bacteria Marina del Rey Back Basins Bacteria TMDL
    • Mar 18, 2004
    80 R4-2003-0065 Multiple N/A Santa Clara River Estuary Beach/Sufers'... more
    • No contact available
    • Nov 28, 2003
    81 2002-017 Calleguas Creek Nutrients Calleguas Creek Nitrogen TMDL
    • Jul 16, 2003
    82 2002-004 Santa Monica Bay Bacteria Santa Monica Bay Beaches Dry Weather... more
    • Jul 15, 2003
    83 2002-022 Santa Monica Bay Bacteria Santa Monica Bay Beaches Wet Weather... more
    • Jul 15, 2003
    84 NA Santa Clara River Chloride TMDL for Chloride in the Santa Clara River,... more
    • No contact available
    • Jun 18, 2003
    85 2001-014 Ballona Creek Trash Ballona Creek Trash TMDL
    • Aug 28, 2002
    86 R01-013 Los Angeles River Trash Los Angeles River Trash TMDL
    • Aug 28, 2002
    87 2000-010 San Gabriel River Trash San Gabriel East Fork Trash TMDL (Revision... more
    • Apr 17, 2001
    88 1999-015 San Gabriel River Trash San Gabriel East Fork Trash TMDL
    • Apr 17, 2001