US Fish and Wildlife ServiceTransects beginning at the mouth of the designated rivers (primarily tributaries of Lake Erie) were delineated moving upstream. Layers were created by tracing the ArtificalPath, found in the National Hydrography Dataset (NHD), maintained by the U.S. Geological Survey (NHD). For each tributary in this dataset 500m and 1000m long transects were created. These transects are used to delineate sampling locations when working in these systems. Questions about these layers can be directed to Jesse McCarter ( jesse_mccarter@fws.gov )ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/e28e11cc461b421e91c146dc08952661_1engU.S. Fish and Wildlife Service Open DataPublicGrand River OH rKM 500m [United States]Web servicesUnited StatesLast Modified: 2020-10-20