Illinois River at Starved Rock Lock (tailwater)
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) 07/15/2025 4:00 PM CDTOfficial Forecast (FCST) 07/15/2025 9:30 AM CDTRecord: 467.8 ftLow Threshold: 438.7 ftCATEGORY STAGE 
Major Flooding 465 ft Moderate Flooding 460 ft Minor Flooding 450 ft Action 449 ft Reliability of the Forecast:
NOTE: Forecasts are issued routinely year-round.
River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.
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
- 467.5 - North Utica Village Hall and North Utica Police Department are threatened.
- 464.5 - A few residences threatened in North Utica. IL-178 (Clark Street) threatened in North Utica.
- 463 - A couple structures threatened in North Utica.
Gauge Location
Recent Crests
| 1. | 465.86 ft | on 05-19-2020 |
| 2. | 464.61 ft | on 05-03-2019 |
| 3. | 463.65 ft | on 02-22-2018 |
| 4. | 460.14 ft | on 05-02-2017 |
| 5. | 461.82 ft | on 12-30-2015 |
Recent Crests
| 1. | 465.86 ft | on 05-19-2020 |
| 2. | 464.61 ft | on 05-03-2019 |
| 3. | 463.65 ft | on 02-22-2018 |
| 4. | 460.14 ft | on 05-02-2017 |
| 5. | 461.82 ft | on 12-30-2015 |
| 6. | 467.81 ft | on 04-19-2013 |
| 7. | 464.31 ft | on 03-11-2009 |
| 8. | 462.26 ft | on 12-29-2008 |
| 9. | 467.31 ft | on 09-16-2008 |
| 10. | 463.27 ft | on 08-25-2007 |
| 11. | 461.40 ft | on 01-15-2005 |
| 12. | 461.42 ft | on 05-14-2002 |
| 13. | 464.60 ft | on 02-22-1997 |
| 14. | 463.56 ft | on 03-05-1985 |
| 15. | 464.70 ft | on 12-05-1982 |
| 16. | 463.40 ft | on 03-21-1979 |
| 17. | 462.40 ft | on 05-16-1970 |
| 18. | 462.20 ft | on 05-22-1943 |
Historic Crests
| 1. | 467.81 ft | on 04-19-2013 |
| 2. | 467.31 ft | on 09-16-2008 |
| 3. | 465.86 ft | on 05-19-2020 |
| 4. | 464.70 ft | on 12-05-1982 |
| 5. | 464.61 ft | on 05-03-2019 |
Historic Crests
| 1. | 467.81 ft | on 04-19-2013 |
| 2. | 467.31 ft | on 09-16-2008 |
| 3. | 465.86 ft | on 05-19-2020 |
| 4. | 464.70 ft | on 12-05-1982 |
| 5. | 464.61 ft | on 05-03-2019 |
| 6. | 464.60 ft | on 02-22-1997 |
| 7. | 464.31 ft | on 03-11-2009 |
| 8. | 463.65 ft | on 02-22-2018 |
| 9. | 463.56 ft | on 03-05-1985 |
| 10. | 463.40 ft | on 03-21-1979 |
| 11. | 463.27 ft | on 08-25-2007 |
| 12. | 462.40 ft | on 05-16-1970 |
| 13. | 462.26 ft | on 12-29-2008 |
| 14. | 462.20 ft | on 05-22-1943 |
| 15. | 461.82 ft | on 12-30-2015 |
| 16. | 461.42 ft | on 05-14-2002 |
| 17. | 461.40 ft | on 01-15-2005 |
| 18. | 460.14 ft | on 05-02-2017 |
Low Water Records
Low Water Records
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 464.81 ft |
| moderate Flooding | 459.81 ft |
| minor Flooding | 449.81 ft |
| action | 448.81 ft |
| Latest Value | 441.63 ft |
| Gauge Zero | -0.19 ft |
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.