| Flood Impacts |
| 23.2 | This level is about a 500 year flood |
| 22.4 | This level is about a 100 year flood |
| 21.8 | This level is about a 50 year flood |
| 20.2 | Floodwaters affect homes in the Blackhawk Park area. This level is about a 10 year flood |
| 18.2 | Floodwaters surround some seasonal homes along Old River Road in the Blackhawk Park area. This level is about a 5 year flood |
| 18.0 | Floodwaters surround some seasonal homes along Old River Road in the Blackhawk Park area |
| 17.0 | There is general overflow of the river. Water is near homes in the Blackhawk Park area of Portage on the west side of the river along Old River Road |
| 16.0 | There is minor lowland flooding |
