Michigan Department of Natural ResourcesUnitized Areas information comes from the Land Ownership Tracking System (LOTS) database within DNR and is linked to the Michigan DNR Parcels using the Parcel ID. This layer displays unitized areas by DNR Parcel. Updated Frequency : WeeklyArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/ec4cf35638854d41a79e1c2377b1b5dd_10engState of Michigan Open Data PortalPublicUnitized Mineral Areas [Michigan]Web servicesMichiganLast Modified: 2025-11-17