Regional Board 7 - Colorado River Basin Region	CATEGORY 5	Final 2018 Integrated Report (CWA Section 303(d) List / 305(b) Report)
2018 CALIFORNIA 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS*

Category 5 criteria: 1) A water segment where standards are not met and a TMDL is required, but not yet completed, for at least one of the pollutants being listed for this segment.

* USGS HUC = US Geological Survey Hydrologic Unit Code. Calwater = State Water Resources Control Board hydrological subunit area or even smaller planning watershed.

** TMDL requirement status definitions for listed pollutants are: A= TMDL still required, B= being addressed by USEPA approved TMDL, C= being addressed by action other than a TMDL, ALT= being addressed by USEPA approved TMDL alternative

*** Dates relate to the TMDL requirement status, so a date for A= TMDL scheduled completion date, B= Date USEPA approved TMDL, and C= Completion date for action other than a TMDL

REGION	WATER BODY NAME	WATER TYPE	WATERSHED* CALWATER / USGS HUC	POLLUTANT POTENTIAL SOURCES Relevant Notes	ESTIMATED AREA ASSESSED	FIRST YEAR LISTED	TMDL REQUIREMENT STATUS**	DATE***
7	Alamo River	River & Stream	10723.100000,10728.000000  /  18100200	Ammonia Source Unknown	59 Miles	2014	5A	2031
				Chlordane Source Unknown	59 Miles	1800	5A	2021
				Chloride Source Unknown	59 Miles	2012	5A	2025
				Chlorpyrifos Source Unknown	59 Miles	1994	5A	2021
				Cyhalothrin, Lambda Source Unknown	59 Miles	2012	5A	2031
				Cypermethrin Source Unknown	59 Miles	2012	5A	2031
				DDD (Dichlorodiphenyldichloroethane) Source Unknown	59 Miles	2014	5A	2031
				DDE (Dichlorodiphenyldichloroethylene) Source Unknown	59 Miles	2014	5A	2031
				DDT (Dichlorodiphenyltrichloroethane) Source Unknown	59 Miles	2014	5A	2021
				Diazinon Source Unknown	59 Miles	2010	5A	2021
				Dieldrin Source Unknown	59 Miles	1994	5A	2021
				Enterococcus Source Unknown	59 Miles	2010	5A	2021
				Escherichia coli (E. coli) Source Unknown	59 Miles	2010	5A	2021
				Malathion Source Unknown	59 Miles	2010	5A	2025
				Mercury Source Unknown	59 Miles	2018	5A	2031
				PCBs (Polychlorinated biphenyls) Source Unknown	59 Miles	2006	5A	2021
				Pyrethroids Source Unknown	59 Miles	2014	5A	2031
				Sedimentation/Siltation Agricultural Return Flows	59 Miles	1994	5B	2002
				Selenium Out-of-state source	59 Miles	1992	5A	2025
				Selenium originates from Upper Basin Portion of Colorado River. Elevated fish tissue levels. For 2006, selenium was moved by USEPA from the being addressed list back to the 303(d) list pending completion and USEPA approval of a TMDL.
				Toxaphene Source Unknown	59 Miles	1992	5A	2021
				Toxicity Source Unknown	59 Miles	1800	5A	2025
7	All American Canal	River & Stream	10723.100000,10726.000000,10727.000000  /  15030107	Chlordane Source Unknown	80 Miles	2014	5A	2031
				DDT (Dichlorodiphenyltrichloroethane) Source Unknown	80 Miles	2014	5A	2031
				PCBs (Polychlorinated biphenyls) Source Unknown	80 Miles	2014	5A	2031
7	Coachella Valley Storm Water Channel	River & Stream	10719.470000,10728.000000  /  18100200	Ammonia Source Unknown	25 Miles	2014	5A	2025
				DDT (Dichlorodiphenyltrichloroethane) Source Unknown	25 Miles	2014	5A	2021
				This listing for DDT only applies to a 2 mile area of the Coachella Valley Storm Water Channel from Lincoln Street to the Salton Sea.
				Dieldrin Source Unknown	25 Miles	2010	5A	2021
				This listing for Dieldrin only applies to a 2 mile area of the Coachella Valley Storm Water Channel from Lincoln Street to the Salton Sea.
				Disulfoton Source Unknown	25 Miles	2010	5A	2031
				Indicator Bacteria Source Unknown	25 Miles	2012	5B	2012
				This listing for pathogens only applies to a 17 mile area of the Coachella Valley Storm Water Channel from Dillion Road to the Salton Sea.
				Oxygen, Dissolved Source Unknown	25 Miles	2012	5A	2031
				PCBs (Polychlorinated biphenyls) Source Unknown	25 Miles	2010	5A	2021
				This listing for PCBs only applies to a 2 mile area of the Coachella Valley Storm Water Channel from Lincoln Street to the Salton Sea.
				Toxaphene Source Unknown	25 Miles	2006	5A	2021
				This listing for toxaphene only applies to a 2 mile area of the Coachella Valley Storm Water Channel from Lincoln Street to the Salton Sea.
				Toxicity Source Unknown	25 Miles	2012	5A	2025
7	Colorado River (Imperial Reservoir to California-Mexico Border)	River & Stream	10727.000000  /  15030107	Manganese Source Unknown	18 Miles	2014	5A	2031
				Sodium Source Unknown	18 Miles	2014	5A	2031
				Specific Conductivity Source Unknown	18 Miles	2014	5A	2031
				Total Dissolved Solids Source Unknown	18 Miles	2014	5A	2031
				Turbidity Source Unknown	18 Miles	2014	5A	2031
7	Colorado River and Associated Lakes and Reservoirs (California-Nevada border to Lake Havasu)	River & Stream	10713.100000,10713.200000,10713.300000  /  15030101	Toxicity Source Unknown	23 Miles	2012	5A	2025
7	Colorado River and Associated Lakes and Reservoirs (Lake Havasu Dam to Imperial Dam)	River & Stream	10714.000000,10715.100000,10715.200000,10715.300000,10715.400000,10715.500000,10727.000000  /  15030107	DDT (Dichlorodiphenyltrichloroethane) Source Unknown	147 Miles	2010	5A	2031
				Sodium Source Unknown	147 Miles	2014	5A	2031
				Specific Conductance Source Unknown	147 Miles	2010	5A	2031
				Total Dissolved Solids Source Unknown	147 Miles	2014	5A	2031
				Toxicity Source Unknown	147 Miles	2012	5A	2025
				Turbidity Source Unknown	147 Miles	2010	5A	2031
7	Deep Creek	River & Stream	10719.320000  /	Iron Source Unknown	6.3 Miles	2014	5A	2031
				Total Dissolved Solids Source Unknown	6.3 Miles	2014	5A	2031
				Turbidity Source Unknown	6.3 Miles	2014	5A	2031
7	Ferguson Lake	Lake & Reservoir	10715.500000  /  15030104	Selenium Source Unknown	395 Acres	2012	5A	2031
7	Hathaway Creek	River & Stream	10719.320000  /	Turbidity Source Unknown	6.1 Miles	2014	5A	2031
7	Hathaway Creek, unnamed tributary	River & Stream	10719.320000  /	Iron Source Unknown	2.1 Miles	2014	5A	2031
				Turbidity Source Unknown	2.1 Miles	2014	5A	2031
7	Havasu, Lake	Lake & Reservoir	10713.300000,10714.000000  /  15030101	Low Dissolved Oxygen Source Unknown	8998 Acres	2010	5A	2031
				Sodium Source Unknown	8998 Acres	2014	5A	2031
7	Imperial Valley Drains	River & Stream	72310000  /  18100200	Ammonia Source Unknown	1225 Miles	2014	5A	2031
				Chlordane Source Unknown	1225 Miles	2010	5A	2021
				This listing for Chlordane only applies to the Barbara Worth Drain, Peach Drain, Greeson Drain, South Central Drain, and Holtville Main Drain areas of the Imperial Valley drains.
				Chlorpyrifos Source Unknown	1225 Miles	2010	5A	2031
				DDE (Dichlorodiphenyldichloroethylene) Source Unknown	1225 Miles	2014	5A	2031
				DDT (Dichlorodiphenyltrichloroethane) Source Unknown	1225 Miles	2014	5A	2021
				The listing for DDT only applies to the Barbara Worth Drain, Peach Drain, and Rice Drain areas of the Imperial Valley drains.
				Dieldrin Source Unknown	1225 Miles	2006	5A	2021
				The listing for dieldrin only applies to the Barbara Worth Drain and Fig Drain areas of the Imperial Valley drains.
				Disulfoton Source Unknown	1225 Miles	2010	5A	2031
				Imidacloprid Source Unknown	1225 Miles	2014	5A	2031
				PCBs (Polychlorinated biphenyls) Source Unknown	1225 Miles	2006	5A	2021
				The listing for PCBs only applies to the Central Drain area of the Imperial Valley drains, from Meloland Road to the outlet into the Alamo River.
				Sedimentation/Siltation Agricultural Return Flows	1225 Miles	1998	5B	2005
				Selenium Source Unknown	1225 Miles	1998	5A	2025
				Selenium originates from Upper Basin Portion of Colorado River. Elevated fish tissue levels.
				Toxaphene Source Unknown	1225 Miles	2006	5A	2021
				This listing for toxaphene only applies to the Barbara Worth Drain, Peach Drain, and Rice Drain of the Imperial Valley drains.
				Toxicity Source Unknown	1225 Miles	2014	5A	2031
7	New River (Imperial County)	River & Stream	10723.100000,10728.000000  /  18100200	Ammonia Out-of-state source	65 Miles	2014	5A	2025
				Bifenthrin Source Unknown	65 Miles	2012	5A	2025
				Chlordane Source Unknown	65 Miles	2006	5A	2021
				Chloride Source Unknown	65 Miles	2012	5A	2025
				Chlorpyrifos Source Unknown	65 Miles	1994	5A	2021
				Cyhalothrin, Lambda Source Unknown	65 Miles	2012	5A	2031
				Cypermethrin Source Unknown	65 Miles	2012	5A	2025
				DDD (Dichlorodiphenyldichloroethane) Source Unknown	65 Miles	2014	5A	2031
				DDE (Dichlorodiphenyldichloroethylene) Source Unknown	65 Miles	2014	5A	2031
				DDT (Dichlorodiphenyltrichloroethane) Source Unknown	65 Miles	2006	5A	2021
				Diazinon Source Unknown	65 Miles	2006	5A	2021
				Dieldrin Source Unknown	65 Miles	2006	5A	2021
				Disulfoton Source Unknown	65 Miles	2010	5A	2031
				Hexachlorobenzene/ HCB Source Unknown	65 Miles	2010	5A	2025
				Imidacloprid Source Unknown	65 Miles	2014	5A	2031
				Indicator Bacteria Out-of-state source	65 Miles	2012	5B	2002
				Malathion Source Unknown	65 Miles	2010	5A	2031
				Mercury Source Unknown	65 Miles	2006	5A	2025
				Naphthalene Source Unknown	65 Miles	2010	5A	2025
				Nutrients Source Unknown	65 Miles	1994	5A	2025
				Regional Board proposes to establish TMDL in cooperation with U.S. EPA and Mexico.
				Organic Enrichment/Low Dissolved Oxygen Source Unknown	65 Miles	2002	5B	2012
				PCBs (Polychlorinated biphenyls) Source Unknown	65 Miles	2006	5A	2021
				Pyrethroids Source Unknown	65 Miles	2014	5A	2031
				Sediment Source Unknown	65 Miles	1800	5B	2003
				Selenium Source Unknown	65 Miles	1994	5A	2025
				Toxaphene Source Unknown	65 Miles	2006	5A	2021
				Toxicity Source Unknown	65 Miles	2006	5A	2025
				Trash Out-of-state source	65 Miles	2002	5B	2007
7	Palo Verde Outfall Drain and Lagoon	River & Stream	10715.400000  /  15030104	Chloride Source Unknown	18 Miles	2012	5A	2025
				DDE (Dichlorodiphenyldichloroethylene) Source Unknown	18 Miles	2014	5A	2031
				Dieldrin Source Unknown	18 Miles	2010	5A	2031
				Indicator Bacteria Source Unknown	18 Miles	2012	5A	2019
				This listing was made by USEPA for 2006.
				Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD) Source Unknown	18 Miles	2014	5A	2021
				Toxaphene Source Unknown	18 Miles	2010	5A	2023
				Toxicity Source Unknown	18 Miles	2012	5A	2031
7	Potrero Creek	River & Stream	10719.320000  /	Turbidity Source Unknown	6.8 Miles	2014	5A	2031
7	Salton Sea	Saline Lake	10719.470000,10721.000000,10722.200000,10723.100000,10725.000000,10728.000000  /  18100200	Ammonia Source Unknown	233045 Acres	2014	5A	2030
				Arsenic Source Unknown	233045 Acres	2010	5A	2030
				Chloride Source Unknown	233045 Acres	2012	5A	2030
				Chlorpyrifos Source Unknown	233045 Acres	2010	5A	2030
				DDE (Dichlorodiphenyldichloroethylene) Source Unknown	233045 Acres	2010	5A	2031
				DDT (Dichlorodiphenyltrichloroethane) Source Unknown	233045 Acres	2014	5A	2030
				Enterococcus Source Unknown	233045 Acres	2010	5A	2030
				Low Dissolved Oxygen Source Unknown	233045 Acres	2010	5A	2030
				Nutrients Source Unknown	233045 Acres	1994	5A	2030
				Salinity Source Unknown	233045 Acres	1998	5A	2030
				TMDL development will not be effective in addressing this problem, which will require an engineering solution with federal, local, and state cooperation.
				Toxicity Source Unknown	233045 Acres	2012	5A	2030
7	West Branch Millard Canyon Creek	River & Stream	10719.320000  /	Turbidity Source Unknown	7.9 Miles	2014	5A	2031
7	Wiest Lake	Lake & Reservoir	10723.100000  /  18100200	DDT (Dichlorodiphenyltrichloroethane) Source Unknown	48 Acres	2014	5A	2021
				Dieldrin Source Unknown	48 Acres	2010	5A	2025
				PCBs (Polychlorinated biphenyls) Source Unknown	48 Acres	2010	5A	2025