{ "dataset": "Oklahoma lake-type waterbodies reported to EPA ATTAINS", "scope": "Every lake-type assessment unit Oklahoma reports, not only those with a page on plainlakes.com.", "state": { "code": "OK", "name": "Oklahoma", "url": "https://plainlakes.com/state/oklahoma/" }, "reporting_cycles": "1987–2025", "count": 456, "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": "GL12", "name": "Grand Lake Site 12", "water_type": "Lake", "size": { "value": 46500, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": null, "cycle_last_assessed": "2017", "integrated_report": { "status": "EPA Final Action", "cycle": "2025", "decided_in_open_cycle": false }, "trophic_status": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Primary Body Contact Recreation" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Warm Water Aquatic Community" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 3, "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/grand-lake-site-12-ok/" }, { "assessment_unit_id": "GL13", "name": "Grand Lake Site 13", "water_type": "Lake", "size": { "value": 46500, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": null, "cycle_last_assessed": "2017", "integrated_report": { "status": "EPA Final Action", "cycle": "2025", "decided_in_open_cycle": false }, "trophic_status": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Primary Body Contact Recreation" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Warm Water Aquatic Community" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 1, "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/grand-lake-site-13-ok/" }, { "assessment_unit_id": "GL14", "name": "Grand Lake Site 14", "water_type": "Lake", "size": { "value": 46500, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": null, "cycle_last_assessed": "2017", "integrated_report": { "status": "EPA Final Action", "cycle": "2025", "decided_in_open_cycle": false }, "trophic_status": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Primary Body Contact Recreation" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Warm Water Aquatic Community" ], "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/grand-lake-site-14-ok/" }, { "assessment_unit_id": "GL15", "name": "Grand Lake Site 15", "water_type": "Lake", "size": { "value": 46500, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": null, "cycle_last_assessed": "2017", "integrated_report": { "status": "EPA Final Action", "cycle": "2025", "decided_in_open_cycle": false }, "trophic_status": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Primary Body Contact Recreation" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Warm Water Aquatic Community" ], "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/grand-lake-site-15-ok/" }, { "assessment_unit_id": "OK220200020020_00", "name": "Robert S. 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