{ "dataset": "South Dakota lake-type waterbodies reported to EPA ATTAINS", "scope": "Every lake-type assessment unit South Dakota reports, not only those with a page on plainlakes.com.", "state": { "code": "SD", "name": "South Dakota", "url": "https://plainlakes.com/state/south-dakota/" }, "reporting_cycles": "2012–2026", "count": 195, "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": "SD-VM-L-THOMPSON_01", "name": "Lake Thompson", "water_type": "Lake/Reservoir/Pond", "size": { "value": 13887.92, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "4A", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 1, "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-thompson-sd/" }, { "assessment_unit_id": "SD-BS-L-POINSETT_01", "name": "Lake Poinsett", "water_type": "Lake/Reservoir/Pond", "size": { "value": 9794.55, "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": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Not Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Semipermanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "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/lake-poinsett-sd/" }, { "assessment_unit_id": "SD-BS-L-WAUBAY_01", "name": "Waubay Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 9531.11, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "4A", "cycle_last_assessed": "2024", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Semipermanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 1, "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/waubay-lake-sd/" }, { "assessment_unit_id": "SD-BS-L-BITTER_01", "name": "Bitter Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 7865.28, "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": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Not Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "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/bitter-lake-sd/" }, { "assessment_unit_id": "SD-BS-L-DRY_NO2_01", "name": "Dry Lake Number 2", "water_type": "Lake/Reservoir/Pond", "size": { "value": 6441.66, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "4A", "cycle_last_assessed": "2016", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": "Eutrophic", "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": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 1, "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/dry-lake-number-2-sd/" }, { "assessment_unit_id": "SD-BF-L-ORMAN_01", "name": "Orman Dam (Belle Fourche Reservoir)", "water_type": "Lake/Reservoir/Pond", "size": { "value": 6106.19, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "4A", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": "Oligotrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "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/orman-dam-belle-fourche-reservoir-sd/" }, { "assessment_unit_id": "SD-MN-L-BIG_STONE_01", "name": "Big Stone Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 5800.34, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "1", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 0, "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/big-stone-lake-sd/" }, { "assessment_unit_id": "SD-GR-L-SHADEHILL_01", "name": "Shadehill Reservoir", "water_type": "Lake/Reservoir/Pond", "size": { "value": 5160.07, "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": "Mesotrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 2, "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/shadehill-reservoir-sd/" }, { "assessment_unit_id": "SD-RD-L-TRAVERSE_01", "name": "Lake Traverse", "water_type": "Lake/Reservoir/Pond", "size": { "value": 5082, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "1", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 0, "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/lake-traverse-sd/" }, { "assessment_unit_id": "SD-BS-L-KAMPESKA_01", "name": "Lake Kampeska", "water_type": "Lake/Reservoir/Pond", "size": { "value": 5066.62, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "1", "cycle_last_assessed": "2024", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": "Mesotrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": "Fully Supporting", "ruled_on": [ "Domestic Water Supply Waters" ], "threatened": null } }, "listed_causes": 0, "uses_assessed": 5, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": "06479449", "url": "https://plainlakes.com/lake/lake-kampeska-sd/" }, { "assessment_unit_id": "SD-MI-L-ANDES_01", "name": "Lake Andes", "water_type": "Lake/Reservoir/Pond", "size": { "value": 4755.55, "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": "Hypereutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Not Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Warmwater Marginal Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "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/lake-andes-sd/" }, { "assessment_unit_id": "SD-CH-L-ANGOSTURA_01", "name": "Angostura Reservoir", "water_type": "Lake/Reservoir/Pond", "size": { "value": 4752.7, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "1", "cycle_last_assessed": "2024", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": "Mesotrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 0, "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/angostura-reservoir-sd/" }, { "assessment_unit_id": "SD-VM-L-WHITEWOOD_01", "name": "Whitewood Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 4465.31, "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": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Warmwater Marginal Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 1, "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/whitewood-lake-sd/" }, { "assessment_unit_id": "SD-BS-L-ALBERT_01", "name": "Lake Albert", "water_type": "Lake/Reservoir/Pond", "size": { "value": 3655.4, "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": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Not Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Marginal Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 3, "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-albert-sd/" }, { "assessment_unit_id": "SD-MI-L-RED_01", "name": "Red Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 3397.49, "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": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 1, "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/red-lake-sd/" }, { "assessment_unit_id": "SD-BS-L-MARSH_01", "name": "Lake Marsh", "water_type": "Lake/Reservoir/Pond", "size": { "value": 3025.76, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "2", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": "Unknown", "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": [ "Warmwater Marginal Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": 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/lake-marsh-sd/" }, { "assessment_unit_id": "SD-BS-L-PELICAN_01", "name": "Pelican Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 2801.3, "units": "Acres" }, "overall_status": "Fully Supporting", "epa_ir_category": "1", "cycle_last_assessed": "2024", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "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": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Fish and Wildlife Propagation, Recreation, and Stock Watering Waters", "Warmwater Semipermanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "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/pelican-lake-sd/" }, { "assessment_unit_id": "SD-BS-L-MADISON_01", "name": "Lake Madison", "water_type": "Lake/Reservoir/Pond", "size": { "value": 2763.52, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "4A", "cycle_last_assessed": "2026", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Not Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Warmwater Permanent Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 1, "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-madison-sd/" }, { "assessment_unit_id": "SD-BS-L-LONG_COD_01", "name": "Long Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 2488.72, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "4A", "cycle_last_assessed": "2016", "integrated_report": { "status": "EPA Final Action", "cycle": "2026", "decided_in_open_cycle": false 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"url": "https://plainlakes.com/lake/north-buffalo-lake-sd/" }, { "assessment_unit_id": "SD-MN-L-OAK_01", "name": "Oak Lake", "water_type": "Lake/Reservoir/Pond", "size": { "value": 400.73, "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": "Eutrophic", "designated_uses": { "fish_consumption": { "status": null, "ruled_on": null, "threatened": null }, "recreation": { "status": "Not Supporting", "ruled_on": [ "Immersion Recreation Waters", "Limited Contact Recreation Waters" ], "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Warmwater Marginal Fish Life Propagation Waters" ], "threatened": null }, "drinking_water": { "status": null, "ruled_on": null, "threatened": null } }, "listed_causes": 2, "uses_assessed": 4, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 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