2017. Iowa Department of Natural Resources. Designated Wetlands This zip file contains a shapefile of the designated wetlands and their setback requirements.
2017. Iowa Department of Natural Resources. Drainage Districts in Iowa This zip file contains a file geodatabase of drainage districts and their infrastructure.
2018. Each zip file contains raster data for a specific HUC 08.
2018. This is not a Regulatory dataset. See the National Flood Hazard Layer for Official Boundaries.The Floodplain Mapping/Redelineation study deliverab...