{ "dataset": "Utah lake-type waterbodies reported to EPA ATTAINS", "scope": "Every lake-type assessment unit Utah reports, not only those with a page on plainlakes.com.", "state": { "code": "UT", "name": "Utah", "url": "https://plainlakes.com/state/utah/" }, "reporting_cycles": "2014–2026", "count": 143, "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": "UT-L-16020310-001_00", "name": "Gilbert Bay", "water_type": "Lake, Saline", "size": { "value": 559423.9853, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "2", "cycle_last_assessed": "2022", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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": "Fully Supporting", "ruled_on": [ "Aquatic Wildlife (Waterfowl, Shorebirds, and Other)" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 0, "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/gilbert-bay-ut/" }, { "assessment_unit_id": "UT-L-16020310-002_00", "name": "Gunnison Bay", "water_type": "Lake, Saline", "size": { "value": 384588.1784, "units": "Acres" }, "overall_status": "Not Assessed", "epa_ir_category": "3", "cycle_last_assessed": "2014", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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/gunnison-bay-ut/" }, { "assessment_unit_id": "UT-L-14070006-001_00", "name": "Lake Powell", "water_type": "Lake, Freshwater", "size": { "value": 149885.2379, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "1", "cycle_last_assessed": "2022", "integrated_report": { "status": "EPA Final Action", "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": [ "Recreation and Aesthetics (Frequent Primary Contact)" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Aquatic Wildlife (Warm Water)" ], "threatened": null }, "drinking_water": { "status": "Fully Supporting", "ruled_on": [ "Domestic Source" ], "threatened": null } }, "listed_causes": 0, "uses_assessed": 4, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/lake-powell-ut/" }, { "assessment_unit_id": "UT-L-16020201-004_01", "name": "Utah Lake other than Provo Bay", "water_type": "Lake, Freshwater", "size": { "value": 87984.1764, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2024", "integrated_report": { "status": "EPA Final Action", "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": [ "Recreation and Aesthetics (Frequent Primary Contact)" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Aquatic Wildlife (Warm Water)" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 6, "uses_assessed": 4, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/utah-lake-other-than-provo-bay-ut/" }, { "assessment_unit_id": "UT-L-16020310-004_00", "name": "Farmington Bay", "water_type": "Lake, Saline", "size": { "value": 77243.1862, "units": "Acres" }, "overall_status": "Not Assessed", "epa_ir_category": "3", "cycle_last_assessed": "2014", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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/farmington-bay-ut/" }, { "assessment_unit_id": "UT-L-16020310-003_00", "name": "Bear River Bay", "water_type": "Lake, Saline", "size": { "value": 71681.258, "units": "Acres" }, "overall_status": "Not Assessed", "epa_ir_category": "3", "cycle_last_assessed": "2014", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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/bear-river-bay-ut/" }, { "assessment_unit_id": "UT-L-16010201-003_00", "name": "Bear Lake", "water_type": "Lake, Freshwater", "size": { "value": 35414.4736, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "2", "cycle_last_assessed": "2022", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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": "Fully Supporting", "ruled_on": [ "Aquatic Wildlife (Cold Water)" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 0, "uses_assessed": 2, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": "10055000", "url": "https://plainlakes.com/lake/bear-lake-ut/" }, { "assessment_unit_id": "UT-L-14060004-001_00", "name": "Strawberry Reservoir", "water_type": "Lake, Freshwater", "size": { "value": 15614.1906, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2024", "integrated_report": { "status": "EPA Final Action", "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": [ "Recreation and Aesthetics (Infrequent Primary Contact)" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Aquatic Wildlife (Cold Water)" ], "threatened": null }, "drinking_water": { "status": "Fully Supporting", "ruled_on": [ "Domestic Source" ], "threatened": null } }, "listed_causes": 2, "uses_assessed": 4, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/strawberry-reservoir-ut/" }, { "assessment_unit_id": "UT-L-14040106-021_00", "name": "Flaming Gorge Reservoir", "water_type": "Lake, Freshwater", "size": { "value": 12525.0402, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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": "Not Supporting", "ruled_on": [ "Aquatic Wildlife (Cold Water)" ], "threatened": null }, "drinking_water": { "status": "Fully Supporting", "ruled_on": [ "Domestic Source" ], "threatened": null } }, "listed_causes": 1, "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/flaming-gorge-reservoir-ut/" }, { "assessment_unit_id": "UT-L-16020102-004_00", "name": "Willard Bay Reservoir", "water_type": "Lake, Freshwater", "size": { "value": 10109.368, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "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": [ "Recreation and Aesthetics (Frequent Primary Contact)" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Aquatic Wildlife (Warm Water)", "Aquatic Wildlife (Waterfowl, Shorebirds, and Other)" ], "threatened": null }, "drinking_water": { "status": "Fully Supporting", "ruled_on": [ "Domestic Source" ], "threatened": null } }, "listed_causes": 1, "uses_assessed": 5, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/willard-bay-reservoir-ut/" }, { "assessment_unit_id": 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"https://plainlakes.com/lake/sevier-bridge-reservoir-yuba-lake-ut/" }, { "assessment_unit_id": "UT-L-16020201-004_02", "name": "Provo Bay portion of Utah Lake", "water_type": "Lake, Freshwater", "size": { "value": 3611.5418, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2024", "integrated_report": { "status": "EPA Final Action", "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": [ "Recreation and Aesthetics (Frequent Primary Contact)" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Aquatic Wildlife (Warm Water)", "Aquatic Wildlife (Waterfowl, Shorebirds, and Other)" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 6, "uses_assessed": 4, 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"ruled_on": [ "Domestic Source" ], "threatened": null } }, "listed_causes": 0, "uses_assessed": 4, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/jordanelle-reservoir-ut/" }, { "assessment_unit_id": "UT-L-14060007-005_00", "name": "Scofield Reservoir", "water_type": "Lake, Freshwater", "size": { "value": 2670.447, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2024", "integrated_report": { "status": "EPA Final Action", "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": [ "Recreation and Aesthetics (Infrequent Primary Contact)" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Aquatic Wildlife (Cold Water)" ], "threatened": null }, 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null, "ruled_on": null, "threatened": null } }, "listed_causes": 0, "uses_assessed": 1, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/fish-lake-ut/" }, { "assessment_unit_id": "UT-L-16020203-001_00", "name": "Deer Creek Reservoir", "water_type": "Lake, Freshwater", "size": { "value": 2561.6164, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "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": [ "Recreation and Aesthetics (Frequent Primary Contact)" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Aquatic Wildlife (Cold Water)" ], "threatened": null }, "drinking_water": { 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