Hamilton County Surveyor's OfficeThese drain structures are consider Hamilton County Regulated Drain structures. A Regulated Drain structure is subject to the provisions of the Indiana Drainage code, I.C.-36-9-27.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/4f905e8618f0479e8eaa9b3eaebb026d_2engHamilton County, Indiana Open Data CollectionPublicDrain Structures [Indiana--Hamilton County]Web servicesIndiana--Hamilton CountyIndianaLast Modified: 2025-11-14