River stage
Geneseo, Green River
- River level
- 4.91 ft
- Status
- Below flood stage
- 7-day change
- -1.93 ft
- Recent high
- 12.87 ft
- Recent low
- 2.44 ft
Last reported 2026-10-13 | NWS GENI2
- 30-day change
- +2.45 ft
- Average
- 5.09 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 21.59 ft
In brief
The Green River at Geneseo, IL read 4.91 ft on Oct 13, 2026, 9.09 ft below action stage. That is 2.45 ft higher than 30 days earlier.
Source: National Weather Service gauge GENI2
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 21.59 ft | 1969-01-23 |
| 2 | 19.38 ft | 2011-05-30 |
| 3 | 18.77 ft | 1998-10-18 |
| 4 | 18.48 ft | 2014-07-01 |
| 5 | 18.32 ft | 2008-12-27 |
| 6 | 17.93 ft | 2002-06-05 |
| 7 | 17.90 ft | 2019-05-30 |
| 8 | 17.86 ft | 2009-03-09 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 14.50 ft
Water affects some roads around south Colona.
- 15.50 ft
Water affects Illinois Highway 84 north of U.S. Highway 6 in the Colona area.
- 18.00 ft
Water inundates 10th Avenue in south Colona. Water affects levees downstream of Illinois Highway 84.
- 19.30 ft
Water reaches the bottom of the Illinois Highway 82 bridge deck in Geneseo.
- 24.00 ft
Water reaches the bottom of the Grange Road bridge deck.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Green River flooding at Geneseo?
No. The Green River at Geneseo is at 4.91 ft, 9.09 ft below action stage.
What is the flood stage at Geneseo?
The National Weather Service sets action stage 14 ft, minor flooding 15 ft, moderate flooding 16.5 ft and major flooding 18 ft.
What is the highest the Green River has been at Geneseo?
The highest crest on record is 21.59 ft, on 1969-01-23.
Is the Green River high or low right now at Geneseo?
At 4.91 ft it is higher than 56% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge GENI2); daily history from the U.S. Geological Survey (site 05447500). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.