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For each impaired watershed, the Watersheds Layer notes the status of a Total Maximum Daily Load (TMDL) study, which determines the total maximum daily loads of selected pollutants that can enter an impaired stream without ruining efforts to improve stream health. The layer also notes significant stewardship groups that have been organized to improve water quality in each watershed. OKI\u2019s Stream Database Glossary defines the widely accepted concepts, specialized terms and acronyms associated with watersheds and water quality.", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 102723, "latestWkid": 3735, "xyTolerance": 0.00328083333333333, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -119670700, "falseY": -95612900, "xyUnits": 3.70242456985124E7, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "spatialReference": { "wkid": 102100, "latestWkid": 3857, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -20037700, "falseY": -30241100, "xyUnits": 10000, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 }, "copyrightText": "OKI staff created this geographic information system layer with data from the Watershed Boundary Dataset, 2010 Ohio Integrated Water Quality Monitoring and Assessment Report, TMDL reports, Watershed Action Plans, and local stewardship organizations.", 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