| Flood Impacts |
| 15.0 | Major flooding can be expected in Niles. High water will affect Water, Marmont, River, and 2nd Streets in Niles. High water will also affect residents living on the first floor of buildings along River Street. |
| 14.0 | Moderate flooding occurs in Niles. High water will affect Water Street, and low sections of Marmont and River Streets in Niles. Lowland flooding surrounding Island Park and low lying areas along the river near the wastewater treatment plant can be expected. |
| 12.5 | Minor flooding of low lying areas adjacent to the river as well as flooding of basements in Niles can be ecpected. |
| 11.0 | Minor flooding of low lying areas adjacent to the river, Island Park, and basement flooding of residences along River and Mairmont Streets in Niles can be expected. |
| 10.0 | High water affects Island Park in Niles. |
| 9.0 | Minor overflow can be expected into low lying areas adjacent to the river. |
