| Flood Impacts |
| 30.0 | Record stage. A repeat of March 1913 flood flow would reach an estimated 31.5 feet. |
| 29.0 | Failure of Gill Township levee would flood thousands of acres including State Road 58 in western Sullivan County and railroad from Riverton to Merom Station. |
| 28.0 | Water level is nearing a record stage. The top of all levees is reached. Failure of a levee causes widespread flooding of rural areas and the towns of Russellville, Illinois and eastern portion of Palestine, Illinois. Illinois 33 south of Palestine, Illinois begins to flood. River cabins are washing away. Some evacuations are necessary. Installation of Gill Township flood gate is necessary. |
| 24.0 | A major flood is in progress. Most levees are at critical levels. Water level near the top of a few levees. High water begins to affect residences in eastern Palestine, Illinois. Some evacuations are necessary. |
| 22.0 | Flooding becomes more serious. Water is approaching critical levels on most levees. Flooding enters some river cabins. Flooding is at the outskirts of Palestine and Russellville, Illinois. Flood waters near Illinois 33 between Palestine and Hutsonville, Illinois. Many local river roads are flooded. |
| 21.0 | Shortcut (gravel road) to Riverton floods at 20 to 21 feet as Wabash River backs up Turtle Creek a few miles south of Merom. |
| 20.0 | Extensive flooding is in progress. Higher rural roads begin to flood. High water isolates many river cabins. Seep water becomes a problem. |
| 18.5 | High water surround elevated river cabins. County roads to these cabins are impassable. Agricultural flooding is in progress. Seep water develops behind levees. |
| 18.0 | Extensive lowland flooding is in progress. High water surrounds many river cabins. Access to most river cabins is by boat only. Levees begin to protect farmland. Extensive flooding of Leaverton Park occurs in Palestine, Illinois. |
| 16.0 | Some agricultural lands underwater. A few rural roads in Crawford County, Illinois close as water backs up Minnow slough. High water affects campground at Leaverton Park in Palestine. Water level is at the top of most makeshift levees. |
| 14.0 | Lowest agricultural lands begin to flood. Makeshift levees offer some protection. Lowest rural roads flood. |
