Rivers in Iowa
Thompson River at Davis City
Below flood stage
4.71ftStage
Observed Tue, Sep 22, 12:00 AM CDT
- Flood stage
- 12.00 ft
- Record crest
- 24.29 ft1992
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 24.00 ft |
| Moderate flood | 20.00 ft |
| Minor flood | 12.00 ft |
| Action | 8.00 ft |
- 24.00 ftWater affects both lanes of I-35 along with many area highways and county roads. Widespread flooding occurs along both the Thompson River and its tributaries.
- 19.00 ftWater affects the Hwy R15 bridge crossings just north of Grand River. Flooding occurs in the low areas of Davis City.
- 13.00 ftFlooding of agricultural land occurs north of Davis City near I-35.
- 12.00 ftWidespread flooding occurs at the Davis City park including the campgrounds. Water affects Hwy R15 just north of the town of Grand River in northwest Decatur County.
- 11.00 ftWater affects the Davis City park and campgrounds.
- 10.00 ftWater affects gravel roads from Shewmaker Park to Oakhill cemetery near the town of Grand River in northwest Decatur County.
- 9.00 ftWater affects the low areas of the Davis City park as well as some rural roads.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 12% |
| Moderate flooding | 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 26, 2026.
Crest history
103 crests on NOAA’s list since 1885.
| # | Date | Stage |
|---|---|---|
| 1 | September 16, 1992 | 24.29 ft |
| 2 | August 27, 1903 | 23.00 ft |
| 3 | August 8, 1885 | 22.80 ft |
| 4 | July 6, 1909 | 22.30 ft |
| 5 | August 16, 1914 | 22.20 ft |
| 6 | June 14, 1947 | 22.10 ft |
| 7 | July 18, 1922 | 21.90 ft |
| 8 | April 24, 1897 | 21.70 ft |
| 9 | March 28, 1915 | 21.60 ft |
| 10 | September 9, 1926 | 21.10 ft |
| 11 | June 26, 1924 | 21.00 ft |
| 12 | June 4, 1919 | 20.80 ft |
| 13 | July 5, 1993 | 20.53 ft |
| 14 | August 6, 1959 | 20.42 ft |
| 15 | June 10, 1974 | 19.43 ft |
| 16 | November 13, 1922 | 19.40 ft |
| 17 | March 24, 1920 | 18.90 ft |
| 18 | May 8, 2007 | 18.90 ft |
| 19 | March 30, 1960 | 18.63 ft |
| 20 | January 6, 1946 | 17.20 ft |
| 21 | June 2, 1921 | 17.10 ft |
| 22 | July 24, 2008 | 16.77 ft |
| 23 | June 6, 1918 | 16.70 ft |
| 24 | April 18, 2013 | 16.68 ft |
| 25 | May 11, 1921 | 16.50 ft |
Most recent crests
- June 24, 2025: 10.53 ft
- May 8, 2024: 6.63 ft
- February 27, 2023: 6.39 ft
- June 8, 2022: 6.99 ft
- July 10, 2021: 8.72 ft
- May 27, 2020: 8.07 ft
- May 29, 2019: 13.15 ft
- September 1, 2018: 10.44 ft
- April 5, 2017: 8.16 ft
- December 14, 2015: 9.57 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Missouri Basin River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.