Lake County Illinois GISDownload In State Plane Projection Here . Drainage districts are local bodies formed for the purpose of draining, ditching, and improving land for agricultural and sanitary purposes. They are authorized to build and maintain drains and levees, to sue all necessary private land within their corporate bodies for that purpose, and to tax land within their boundaries as necessary. Update Frequency: This dataset is updated on a weekly basis.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/18c4bdb9bd424d698b567a7a4081952e_1engLake County Illinois Open Data PortalPublicDrainage Districts [Illinois--Lake County]Web servicesIllinois--Lake CountyIllinoisLast Modified: 2026-01-04