Michigan Dept. of Environment, Great Lakes, and EnergyRule 98(R 323.1098) of the Part 4 "Water Quality Standards" designated certain waters (contained in this layer) as protected from degradation as Outstanding State Resource Waters (OSRWs). These waters include those that pass through National Parks or Shorelines, and designated Wild Rivers. This layer describes all other surface waters of the Lake Superior basin that are not identified as Outstanding State Resource Waters (OSRWs), and are designated as Lake Superior basin - outstanding international resource waters (LSBOIRW). Under the LSB-OIRW designation, new or increased loadings from point sources to the surface waters of the Lake Superior basin are prohibited unless the new or increased loading is consistent with the requirements of Rule 98. Field Name Description COM ID Vertical Relationship Identifier field from the National Hydrography High Resolution Dataset GNIS ID Geographic Names Information System Identifier field from the National Hydrography High Resolution Dataset GNIS NAME Geographic Names Information System official name field from the National Hydrography High Resolution Dataset Reach Code a unique 14-digit code that identifies a continuous piece of surface water with similar hydrologic characteristics from the National Hydrography High Resolution Dataset For questions or more information about this dataset, please reach out to Chris Vandenberg of EGLE's Great Lakes Watersheds Assessment, Restoration, and Management Section at VandenbergC@michigan.gov .ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/98035c88ab244ab4b58ae91c9b7487e0_16engState of Michigan Open Data PortalPublicOutstanding International Resource Waters [Michigan]Web servicesMichiganLast Modified: 2025-09-24