{ "dataset": "California lake-type waterbodies reported to EPA ATTAINS", "scope": "Every lake-type assessment unit California reports, not only those with a page on plainlakes.com.", "state": { "code": "CA", "name": "California", "url": "https://plainlakes.com/state/california/" }, "reporting_cycles": "2009–2026", "count": 607, "sources": [ { "source": "EPA ATTAINS", "vintage": "Reporting cycles 1987–2026" }, { "source": "USGS National Water Information System", "vintage": "Trailing 365 days, through 2026-08-16" } ], "license": "https://plainlakes.com/terms/", "attribution": "PlainLakes (plainlakes.com), compiled from EPA ATTAINS and USGS NWIS", "disclaimer": "Assessment verdicts are the decisions of the state agency or tribal nation that filed them, as published to EPA ATTAINS, and are reproduced without modification. PlainLakes is not affiliated with the federal government.", "waterbodies": [ { "assessment_unit_id": "CAS7280000019990205133504", "name": "Salton Sea", "water_type": "Lake, Saline", "size": { "value": 233044.82, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2026", "integrated_report": { "status": "Organization Final Action - Submittal", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": null, "designated_uses": { "fish_consumption": { "status": "Not Supporting", "ruled_on": [ "Commercial and Sport Fishing" ], "threatened": null }, "recreation": { "status": null, "ruled_on": null, "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Warm Freshwater Habitat" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 11, "uses_assessed": 2, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": "10254005", "url": "https://plainlakes.com/lake/salton-sea-ca/" }, { "assessment_unit_id": "CAL6343001019980806120257", "name": "Tahoe, Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 84092.19, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "4A", "cycle_last_assessed": "2026", "integrated_report": { "status": "Organization Final Action - Submittal", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": null, "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Water Contact Recreation" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Cold Freshwater Habitat" ], "threatened": null }, "drinking_water": { "status": "Fully Supporting", "ruled_on": [ "Municipal and Domestic Supply" ], "threatened": null } }, "listed_causes": 2, "uses_assessed": 3, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/tahoe-lake-ca/" }, { "assessment_unit_id": "CAL5271004020211108038703", "name": "Goose Lake (Modoc County)", "water_type": "Lake/Reservoir/Pond", "size": { "value": 62385.31, "units": "Acres" }, "overall_status": null, "epa_ir_category": null, "cycle_last_assessed": null, "integrated_report": { "status": null, "cycle": null, "decided_in_open_cycle": false }, "trophic_status": null, "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": null, "ruled_on": null, "threatened": null }, "aquatic_life": { "status": null, "ruled_on": null, "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 0, "uses_assessed": 0, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/goose-lake-modoc-county-ca/" }, { "assessment_unit_id": "CAL6371006019980805165100", "name": "Honey Lake", "water_type": "Lake, Saline", "size": { "value": 55525.92, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2020", "integrated_report": { "status": "Organization Final Action - Submittal", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": null, "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Not Supporting", "ruled_on": [ "Water Contact Recreation" ], "threatened": null }, "aquatic_life": { "status": null, "ruled_on": null, "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 2, "uses_assessed": 2, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/honey-lake-ca/" }, { "assessment_unit_id": "CAL1059102020020130221305", "name": "Klamath River HU, Tule Lake and Lower Klamath Lake National Wildlife Refuge", "water_type": "Lake/Reservoir/Pond", "size": { "value": 48791.11, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2026", "integrated_report": { "status": "Organization Final Action - 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