| Dugout Run | Mercer, IL | 3.6 miles | SE |
| Pike Run | Mercer, IL | 4.7 miles | SW |
| North Camp Creek | Mercer, IL | 5.6 miles | NE |
| Skunk Creek | Mercer, IL | 6.1 miles | NE |
| Douglas Creek | Mercer, IL | 6.3 miles | SW |
| Illinois Slough | Mercer, IL | 6.7 miles | NW |
| Donohue Run | Mercer, IL | 6.8 miles | NE |
| Maids Run | Mercer, IL | 6.8 miles | SW |
| Goose Run | Mercer, IL | 7.1 miles | SE |
| Little Camp Creek | Mercer, IL | 7.1 miles | NW |
| Cash Creek | Mercer, IL | 7.5 miles | NW |
| North Pope Creek | Mercer, IL | 7.7 miles | SE |
| Coal Creek | Mercer, IL | 8.2 miles | NE |
| Wildcat Creek | Mercer, IL | 8.5 miles | SW |
| Snake Creek | Mercer, IL | 8.7 miles | SW |
| Big Chief Run | Mercer, IL | 9.1 miles | SW |
| Camp Creek | Mercer, IL | 9.2 miles | NW |
| Middle Henderson Creek | Warren, IL | 10.7 miles | SE |
| Deerlick Branch | Mercer, IL | 10.9 miles | NW |
| Duck Creek | Warren, IL | 10.9 miles | SW |
| Mad River | Mercer, IL | 11.5 miles | SW |
| Toms Creek | Mercer, IL | 11.6 miles | SE |
| Camp Creek | Mercer, IL | 11.7 miles | NE |
| North Henderson Creek | Henderson, IL | 12.1 miles | SW |
| Winters Creek | Mercer, IL | 12.3 miles | NW |
| Yankee Branch | Mercer, IL | 12.7 miles | NW |
| Parker Run | Mercer, IL | 12.9 miles | NE |
| Johns Creek | Warren, IL | 13.1 miles | SW |
| Davids Creek | Warren, IL | 13.3 miles | SW |
| Pope Creek | Mercer, IL | 13.4 miles | SW |
| Cedar Creek | Warren, IL | 13.5 miles | SW |
| Irwin Branch | Mercer, IL | 13.5 miles | NW |
| Edwards River | Mercer, IL | 14 miles | SW |
| Mud Creek | Rock Island, IL | 14.3 miles | NE |
| Eliza Creek | Mercer, IL | 14.9 miles | SW |
| Ziegler Slough | Louisa, IA | 15.5 miles | SW |
| Dolan Creek | Mercer, IL | 15.8 miles | NW |
| Iowa River | Louisa, IA | 15.9 miles | SW |
| Iowa Slough | Louisa, IA | 16 miles | SW |
| Keg Slough (historical) | Mercer, IL | 16.1 miles | SW |
| Buffalo Slough | Des Moines, IA | 16.3 miles | SW |
| Keating Creek | Mercer, IL | 16.3 miles | NW |
| Fall Creek | Henderson, IL | 16.4 miles | SW |
| Coal Creek | Rock Island, IL | 16.7 miles | NW |
| Hills Creek | Rock Island, IL | 17 miles | NW |
| Talbot Creek | Warren, IL | 17.1 miles | SE |
| Fancy Creek | Rock Island, IL | 17.2 miles | NE |
| Huron Chute | Des Moines, IA | 17.3 miles | SW |
| Cody Chute | Des Moines, IA | 17.4 miles | SW |
| Mud Creek | Henry, IL | 17.4 miles | NE |
|