| Flood Impacts |
| 23.0 | Water reaches the top of the road surface at the bridge. |
| 22.4 | Is the low point on the west bridge approach. |
| 18.0 | Is the approximate height of the underside of the bridge deck. |
| 16.0 | The east approach of the bridge at the gage site is affected. |
| 14.5 | Northwest 62nd Avenue in Johnston is flooded. |
| 14.0 | County Road R22 begins to flood south of highway 141. County Road F31 west of Granger floods and northwest 62nd street in Johnston floods. |
| 13.3 | County Road F31 west of Granger is threatened. |
| 12.6 | Water reaches the top of the concrete drain pipe in downstream right bank. |
| 12.0 | The left bank overflows just downstream of the gage site. |
