Mississippi River at Illinois City
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/20/2025 12:00 PM CDTOfficial Forecast (FCST) 06/20/2025 10:45 AM CDTRecord: 24.1 ftCATEGORY STAGE 
Major Flooding 18 ft Moderate Flooding 16 ft Minor Flooding 15 ft Action 14 ft Reliability of the Forecast:
NOTE: Forecasts are issued routinely year-round.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 29 - Water reaches the top of the Milan levee.
- 24.5 - Water reaches the top of the Andalusia levee.
- 22.5 - Water affects the entire state park at Fairport and is at the foundations of facilities there.
Gauge Info
| Coordinates | 41.4256, -91.0128 |
| RFC | NCRFC |
| State | IL |
| WFO | DVN |
| County | Rock Island |
| Data Provider(s) | |
| U.S. Army Corps of Engineers | U.S. Army Corps of Engineers |
| COE | Website |
Gauge Location
Recent Crests
| 1. | 20.11 ft | on 07-11-2024 | (P) |
| 2. | 21.22 ft | on 05-02-2023 | (P) |
| 3. | 22.81 ft | on 06-02-2019 | |
| 4. | 23.23 ft | on 05-03-2019 | |
| 5. | 20.83 ft | on 04-10-2019 |
Recent Crests
| 1. | 20.11 ft | on 07-11-2024 | (P) |
| 2. | 21.22 ft | on 05-02-2023 | (P) |
| 3. | 22.81 ft | on 06-02-2019 | |
| 4. | 23.23 ft | on 05-03-2019 | |
| 5. | 20.83 ft | on 04-10-2019 | |
| 6. | 19.39 ft | on 10-13-2018 | |
| 7. | 17.22 ft | on 05-12-2018 | |
| 8. | 16.76 ft | on 06-01-2017 | |
| 9. | 15.87 ft | on 09-30-2016 | |
| 10. | 15.11 ft | on 03-29-2016 | |
| 11. | 13.52 ft | on 06-18-2015 | |
| 12. | 22.23 ft | on 07-05-2014 | |
| 13. | 20.30 ft | on 04-22-2013 | |
| 14. | 20.74 ft | on 04-23-2011 | |
| 15. | 22.96 ft | on 06-17-2008 | |
| 16. | 19.94 ft | on 05-01-2008 | |
| 17. | 16.68 ft | on 06-23-2004 | |
| 18. | 15.98 ft | on 06-07-2002 | |
| 19. | 22.41 ft | on 04-25-2001 | |
| 20. | 19.57 ft | on 04-20-1997 | |
| 21. | 24.10 ft | on 07-09-1993 | |
| 22. | 19.36 ft | on 10-07-1986 | |
| 23. | 16.91 ft | on 03-20-1983 | |
| 24. | 15.61 ft | on 04-30-1982 | |
| 25. | 17.21 ft | on 04-05-1979 | |
| 26. | 19.45 ft | on 05-09-1975 | |
| 27. | 17.62 ft | on 06-26-1974 | |
| 28. | 20.05 ft | on 04-25-1973 | |
| 29. | 15.29 ft | on 04-25-1971 | |
| 30. | 19.69 ft | on 04-26-1969 | |
| 31. | 17.76 ft | on 04-16-1967 | |
| 32. | 23.27 ft | on 04-28-1965 | |
| 33. | 16.61 ft | on 04-03-1960 | |
| 34. | 15.80 ft | on 05-15-1954 | |
| 35. | 19.50 ft | on 04-28-1952 | |
| 36. | 19.43 ft | on 04-28-1951 | |
| 37. | 15.35 ft | on 03-30-1946 | |
| 38. | 15.73 ft | on 04-01-1945 | |
| 39. | 17.50 ft | on 06-30-1944 | |
| 40. | 16.40 ft | on 06-15-1942 | |
| 41. | 17.00 ft | on 09-24-1938 |
Historic Crests
| 1. | 24.10 ft | on 07-09-1993 |
| 2. | 23.27 ft | on 04-28-1965 |
| 3. | 23.23 ft | on 05-03-2019 |
| 4. | 22.96 ft | on 06-17-2008 |
| 5. | 22.81 ft | on 06-02-2019 |
Historic Crests
| 1. | 24.10 ft | on 07-09-1993 | |
| 2. | 23.27 ft | on 04-28-1965 | |
| 3. | 23.23 ft | on 05-03-2019 | |
| 4. | 22.96 ft | on 06-17-2008 | |
| 5. | 22.81 ft | on 06-02-2019 | |
| 6. | 22.41 ft | on 04-25-2001 | |
| 7. | 22.23 ft | on 07-05-2014 | |
| 8. | 21.22 ft | on 05-02-2023 | (P) |
| 9. | 20.83 ft | on 04-10-2019 | |
| 10. | 20.74 ft | on 04-23-2011 | |
| 11. | 20.30 ft | on 04-22-2013 | |
| 12. | 20.11 ft | on 07-11-2024 | (P) |
| 13. | 20.05 ft | on 04-25-1973 | |
| 14. | 19.94 ft | on 05-01-2008 | |
| 15. | 19.69 ft | on 04-26-1969 | |
| 16. | 19.57 ft | on 04-20-1997 | |
| 17. | 19.50 ft | on 04-28-1952 | |
| 18. | 19.45 ft | on 05-09-1975 | |
| 19. | 19.43 ft | on 04-28-1951 | |
| 20. | 19.39 ft | on 10-13-2018 | |
| 21. | 19.36 ft | on 10-07-1986 | |
| 22. | 17.76 ft | on 04-16-1967 | |
| 23. | 17.62 ft | on 06-26-1974 | |
| 24. | 17.50 ft | on 06-30-1944 | |
| 25. | 17.22 ft | on 05-12-2018 | |
| 26. | 17.21 ft | on 04-05-1979 | |
| 27. | 17.00 ft | on 09-24-1938 | |
| 28. | 16.91 ft | on 03-20-1983 | |
| 29. | 16.76 ft | on 06-01-2017 | |
| 30. | 16.68 ft | on 06-23-2004 | |
| 31. | 16.61 ft | on 04-03-1960 | |
| 32. | 16.40 ft | on 06-15-1942 | |
| 33. | 15.98 ft | on 06-07-2002 | |
| 34. | 15.87 ft | on 09-30-2016 | |
| 35. | 15.80 ft | on 05-15-1954 | |
| 36. | 15.73 ft | on 04-01-1945 | |
| 37. | 15.61 ft | on 04-30-1982 | |
| 38. | 15.35 ft | on 03-30-1946 | |
| 39. | 15.29 ft | on 04-25-1971 | |
| 40. | 15.11 ft | on 03-29-2016 | |
| 41. | 13.52 ft | on 06-18-2015 |
Gauge Photos
No Images Found
Unique Local Info
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.