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Some waterbodies have been sampled once, some waterbodies have multiple surveys across the years Data Collection: Data was collected following standardized vegetation collection protocols developed by the ANC program. More information can be found on these protocols on the ANC Section of the EGLE website. Contact: If you have questions please contact the ANC program at EGLE-WRD-ANC@Michigan.gov. View metadata for this item in ArcGIS Online by copying and pasting this link into a new browser tab: https://gis-egle.hub.arcgis.com/datasets/egle::aquatic-nuisance-control-vegetation-survey-sites/about", "geometryType": "esriGeometryPoint", "sourceSpatialReference": { "wkid": 102123, "latestWkid": 3078, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -28810000, "falseY": -30359300, "xyUnits": 10000, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "copyrightText": "Water Resources Division (WRD), Michigan Department of Environment, Great Lakes, and Energy (EGLE). 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