Regional Board 7 - Colorado River Basin Region	CATEGORY 1	Final 2018 Integrated Report (CWA Section 303(d) List / 305(b) Report)
2018 CALIFORNIA WATERS SUPPORTING ALL ASSESSED BENEFICIAL USES

Common Beneficial Uses Applicable California Beneficial Uses Aquatic Life Support Cold Freshwater Habitat, Estuarine Habitat, Fish Migration, Fish Spawning, Freshwater Replenishment, Inland Saline Water Habitat, Limited Warmwater, Marine Habitat, Preservation of Areas of Special Biological Significance, Preservation of Rare & Endangered Species, Warm Freshwater Habitat, Wetland Habitat, Wildlife Habitat Drinking Water Supply Municipal & Domestic Supply Fish Consumption Commercial or recreational collection of fish, shellfish, or organisms, Subsistence Fishing Secondary Contact Non-Contact Recreation Shellfishing Shellfish Harvesting Swimming Water Contact Recreation

Category 1 Criteria: 1) A water that fully supports at least one of its California beneficial uses; 2) has other uses that are not assessed or lack sufficient information to be assessed; and 3) No assessed uses are not supported.

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

REGION	WATER BODY NAME	WATER TYPE	WATERSHED* CALWATER / USGS HUC	COMMON BENEFICIAL USE California Beneficial Use Pollutant Assessed	ESTIMATED AREA ASSESSED
7	Azalea Creek	River & Stream	10719.320000  /	Drinking Water Supply Municipal & Domestic Supply Ammonia, Chloride, Nitrate/Nitrite (Nitrite + Nitrate as N), Specific Conductivity, Turbidity, pH Swimming Water Contact Recreation pH Aquatic Life Support Warm Freshwater Habitat Ammonia, Benthic Community Effects, Chloride, Oxygen, Dissolved, pH Secondary Contact Non-Contact Recreation pH SUPPORTED NON-CORE CA BENEFICIAL USES Agricultural Supply pH	4.5 Miles
7	Borrego Palm Canyon Creek	River & Stream	10722.130000  /	Drinking Water Supply Municipal & Domestic Supply Aluminum, Ammonia, Arsenic, Cadmium, Chloride, Chromium, Copper, Fluoride, Lead, Manganese, Nickel, Nitrate/Nitrite (Nitrite + Nitrate as N), Selenium, Silver, Specific Conductivity, Total Dissolved Solids, Turbidity, Zinc, pH Swimming Water Contact Recreation pH Aquatic Life Support Warm Freshwater Habitat Ammonia, Arsenic, Benthic Community Effects, Cadmium, Chloride, Chromium, Copper, Lead, Nickel, Oxygen, Dissolved, Selenium, Silver, Zinc, pH Secondary Contact Non-Contact Recreation pH	7.1 Miles
7	Brown Creek	River & Stream	10719.320000  /	Drinking Water Supply Municipal & Domestic Supply Ammonia, Chloride, Nitrate/Nitrite (Nitrite + Nitrate as N), Specific Conductivity, Turbidity, pH Swimming Water Contact Recreation pH Aquatic Life Support Warm Freshwater Habitat Ammonia, Benthic Community Effects, Chloride, Oxygen, Dissolved, pH Secondary Contact Non-Contact Recreation pH SUPPORTED NON-CORE CA BENEFICIAL USES Agricultural Supply pH	4.5 Miles
7	Cougar Creek	River & Stream	10722.120000  /	Drinking Water Supply Municipal & Domestic Supply Ammonia, Chloride, Nitrate/Nitrite (Nitrite + Nitrate as N), Specific Conductivity, Turbidity, pH Swimming Water Contact Recreation pH Aquatic Life Support Freshwater Replenishment pH Warm Freshwater Habitat Ammonia, Benthic Community Effects, Chloride, Oxygen, Dissolved, pH Secondary Contact Non-Contact Recreation pH	6.5 Miles
7	Coyote Creek (San Diego County)	River & Stream	10722.120000,10722.130000  /	Drinking Water Supply Municipal & Domestic Supply Ammonia, Chloride, Nitrate/Nitrite (Nitrite + Nitrate as N), Specific Conductivity, Turbidity, pH Swimming Water Contact Recreation pH Aquatic Life Support Warm Freshwater Habitat Ammonia, Benthic Community Effects, Chloride, Oxygen, Dissolved, pH Secondary Contact Non-Contact Recreation pH	34 Miles
7	Deep Canyon Creek	River & Stream	10719.470000  /	Drinking Water Supply Municipal & Domestic Supply Ammonia, Chloride, Nitrate/Nitrite (Nitrite + Nitrate as N), Specific Conductivity, Turbidity, pH Swimming Water Contact Recreation pH Aquatic Life Support Freshwater Replenishment pH Warm Freshwater Habitat Ammonia, Benthic Community Effects, Chloride, Oxygen, Dissolved, pH Secondary Contact Non-Contact Recreation pH	8.9 Miles
7	East Fork Whitewater River	River & Stream	10719.410000  /	Aquatic Life Support Warm Freshwater Habitat Benthic Community Effects	4.3 Miles
7	Horsethief Creek	River & Stream	10719.470000  /	Drinking Water Supply Municipal & Domestic Supply Aluminum, Ammonia, Arsenic, Cadmium, Chloride, Chromium, Copper, Fluoride, Lead, Manganese, Nickel, Nitrate/Nitrite (Nitrite + Nitrate as N), Selenium, Silver, Specific Conductivity, Total Dissolved Solids, Turbidity, Zinc, pH Swimming Water Contact Recreation Indicator Bacteria, pH Aquatic Life Support Freshwater Replenishment pH Warm Freshwater Habitat Ammonia, Arsenic, Benthic Community Effects, Cadmium, Chloride, Chromium, Copper, Lead, Nickel, Oxygen, Dissolved, Selenium, Silver, Zinc, pH Secondary Contact Non-Contact Recreation pH	8 Miles
7	Lambs Creek	River & Stream	10719.470000  /	Drinking Water Supply Municipal & Domestic Supply Ammonia, Chloride, Nitrate/Nitrite (Nitrite + Nitrate as N), Specific Conductivity, Turbidity, pH Swimming Water Contact Recreation pH Aquatic Life Support Freshwater Replenishment pH Warm Freshwater Habitat Ammonia, Benthic Community Effects, Chloride, Oxygen, Dissolved, pH Secondary Contact Non-Contact Recreation pH	3.6 Miles
7	Snow Creek	River & Stream	10719.470000  /	Drinking Water Supply Municipal & Domestic Supply Aluminum, Ammonia, Arsenic, Boron, Bromide, Cadmium, Chloride, Chromium, Copper, Fluoride, Iron, Lead, Manganese, Nickel, Nitrate/Nitrite (Nitrite + Nitrate as N), Selenium, Silver, Sodium, Specific Conductivity, Sulfates, Total Dissolved Solids, Turbidity, Zinc, pH Swimming Water Contact Recreation Indicator Bacteria, pH Aquatic Life Support Cold Freshwater Habitat Alkalinity as CaCO3, Ammonia, Arsenic, Benthic Community Effects, Cadmium, Chloride, Chromium, Copper, Lead, Nickel, Oxygen, Dissolved, Selenium, Silver, Temperature, water, Zinc, pH Secondary Contact Non-Contact Recreation pH	3.3 Miles
7	Thousand Palms Canyon Creek	River & Stream	10719.440000,10719.460000  /	Drinking Water Supply Municipal & Domestic Supply Aluminum, Ammonia, Arsenic, Cadmium, Chloride, Chromium, Copper, Fluoride, Lead, Manganese, Nickel, Nitrate/Nitrite (Nitrite + Nitrate as N), Selenium, Silver, Specific Conductivity, Total Dissolved Solids, Turbidity, Zinc, pH Aquatic Life Support Warm Freshwater Habitat Ammonia, Arsenic, Benthic Community Effects, Cadmium, Chloride, Chromium, Copper, Lead, Nickel, Oxygen, Dissolved, Selenium, Silver, Zinc, pH Secondary Contact Non-Contact Recreation pH SUPPORTED NON-CORE CA BENEFICIAL USES Agricultural Supply Fluoride, pH	3.1 Miles
7	Twin Pines Creek	River & Stream	10719.320000  /	Drinking Water Supply Municipal & Domestic Supply Ammonia, Chloride, Iron, Nitrate/Nitrite (Nitrite + Nitrate as N), Specific Conductivity, Total Dissolved Solids, Turbidity, pH Swimming Water Contact Recreation pH Aquatic Life Support Warm Freshwater Habitat Ammonia, Benthic Community Effects, Chloride, Oxygen, Dissolved, pH Secondary Contact Non-Contact Recreation pH SUPPORTED NON-CORE CA BENEFICIAL USES Agricultural Supply pH	6.5 Miles