{ "dataset": "Arizona lake-type waterbodies reported to EPA ATTAINS", "scope": "Every lake-type assessment unit Arizona reports, not only those with a page on plainlakes.com.", "state": { "code": "AZ", "name": "Arizona", "url": "https://plainlakes.com/state/arizona/" }, "reporting_cycles": "2006–2026", "count": 78, "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": "AZL15030101-0960_00", "name": "Lake Mohave", "water_type": "Lake, Freshwater", "size": { "value": 27044, "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": "Oligotrophic", "designated_uses": { "fish_consumption": { "status": "Fully Supporting", "ruled_on": [ "Fish Consumption" ], "threatened": null }, "recreation": { "status": null, "ruled_on": null, "threatened": null }, "aquatic_life": { "status": "Not Supporting", "ruled_on": [ "Aquatic and Wildlife (Coldwater Fishery)" ], "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": "09422500", "url": "https://plainlakes.com/lake/lake-mohave-az/" }, { "assessment_unit_id": "AZL15030101-0590_00", "name": "Lake Havasu", "water_type": "Lake, Freshwater", "size": { "value": 19780, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2026", "integrated_report": { "status": "Organization Final Action - 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Submittal", "cycle": "2026", "decided_in_open_cycle": false }, "trophic_status": "Oligotrophic", "designated_uses": { "fish_consumption": { "status": "Not Supporting", "ruled_on": [ "Fish Consumption" ], "threatened": null }, "recreation": { "status": "Fully Supporting", "ruled_on": [ "Full Body Contact" ], "threatened": null }, "aquatic_life": { "status": "Fully Supporting", "ruled_on": [ "Aquatic and Wildlife (Warmwater Fishery)" ], "threatened": null }, "drinking_water": { "status": "Fully Supporting", "ruled_on": [ "Domestic Water Source" ], "threatened": null } }, "listed_causes": 1, "uses_assessed": 6, "uses_assessed_filed_by_epa": 0, "listed_causes_filed_by_epa": 0, "usgs_gauge_site_no": null, "url": "https://plainlakes.com/lake/roosevelt-lake-az/" }, { "assessment_unit_id": "AZL14070006-1130_00", "name": "Lake Powell", "water_type": "Lake, Freshwater", "size": { "value": 9770, "units": "Acres" }, "overall_status": "Not Supporting", "epa_ir_category": "5", "cycle_last_assessed": "2026", "integrated_report": { "status": "Organization Final Action - 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