GNIS Places (1)
Road Mile Markers (2)
Railroads (3)
Pipelines (4)
Cities (Standard) (6)
Townships (7)
DNR Field Offices (8)
Zip Codes (9)
US House (11)
Iowa House (12)
Iowa Senate (13)
USGS Gages (15)
Fish Kills (16)
Beach Monitoring Sites (20)
Sinkholes (21)
Potential Karst (22)
Watersheds (12-Digit HUC) (24)
Groundwater Capture Zones (25)
| 2-Year Capture Zone |
| 5-Year Capture Zone |
| 10-Year Capture Zone |
| Hydrologic Boundary |
| 400-Foot Radius |
| 2500-Foot Radius |
| 1-Mile Radius |
| Modified Karst - High |
| Modified Karst - Medium |
| Aquifer Retrieval Area |
| Surface Runoff Area |
|
