Hamilton County Surveyor's OfficeThese drains are considered Hamilton County Regulated Drain. A Regulated Drain is drain, either open channel , grass waterway or closed tile/sewer, subject to the provisions of the Indiana Drainage code, I.C.-36-9-27.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/1ab55b36211e45339a7bcc8e85d03082_3engHamilton County, Indiana Open Data CollectionPublicDrain Waterway [Indiana--Hamilton County]Web servicesIndiana--Hamilton CountyIndianaLast Modified: 2025-07-03