Michigan Department of Natural ResourcesThe Michigan DNR Trails are divided up into eight (8) management units. Each unit has a trail specialist assigned to it. There are two regions that oversee the units within those regions. The state trail coordinator covers the entire state. The management unit boundaries were created to include trail systems which is why they don't always match county boundaries.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/21adc23e10cf48eeb763fd5f93a0d139_6engState of Michigan Open Data PortalPublicDNR Parks District Boundary [Michigan]Web servicesMichiganLast Modified: 2026-01-14