Nishnabotna River above Hamburg
Observed Thu, Sep 24, 4:00 AM CDT
- Flood stage
- 25.00 ft
- Record crest
- 33.18 ft1998
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 33.00 ft |
| Moderate flood | 27.50 ft |
| Minor flood | 25.00 ft |
| Action | 23.00 ft |
- 39.00 ftWater reaches the bottom of the J64 bridge at the gage site.
- 33.00 ftThe top of the levee near the bridge in town is overtopped with flood waters. I-29 is closed south of town.
- 27.50 ftState Highway 275 south of the gage may be threatened in several spots.
- 25.00 ftMore extensive lowland flooding begins as the parking lot near the gauge begins to experience flooding. In addition, some local farm levees may be overtopped with flood waters.
- 23.00 ftMinor overflows begin within the city limits, however there is no threat to property at this stage.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 27% |
| Moderate flooding | 9% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 23, 2026.
Crest history
100 crests on NOAA’s list since 1917.
| # | Date | Stage |
|---|---|---|
| 1 | June 17, 1998 | 33.18 ft |
| 2 | May 8, 2007 | 32.44 ft |
| 3 | March 16, 2019 | 31.07 ft |
| 4 | July 25, 1993 | 30.56 ft |
| 5 | June 14, 2008 | 29.19 ft |
| 6 | August 8, 1999 | 28.83 ft |
| 7 | June 22, 1996 | 28.45 ft |
| 8 | September 10, 1989 | 28.27 ft |
| 9 | May 27, 1987 | 28.14 ft |
| 10 | July 27, 1990 | 28.06 ft |
| 11 | May 26, 2004 | 28.04 ft |
| 12 | June 16, 1984 | 27.90 ft |
| 13 | March 7, 1979 | 27.46 ft |
| 14 | September 15, 1972 | 27.42 ft |
| 15 | December 15, 2015 | 27.27 ft |
| 16 | June 15, 1982 | 27.25 ft |
| 17 | June 14, 2010 | 26.95 ft |
| 18 | June 15, 1991 | 26.75 ft |
| 19 | June 4, 2014 | 26.57 ft |
| 20 | June 24, 1947 | 26.03 ft |
| 21 | February 20, 1971 | 26.03 ft |
| 22 | March 7, 1949 | 25.90 ft |
| 23 | June 14, 1976 | 25.70 ft |
| 24 | May 11, 2016 | 25.65 ft |
| 25 | February 19, 1997 | 25.50 ft |
Most recent crests
- May 22, 2024: 24.07 ft
- February 28, 2023: 18.72 ft
- June 8, 2022: 18.09 ft
- October 25, 2021: 13.21 ft
- May 27, 2020: 17.94 ft
- March 16, 2019: 31.07 ft
- October 10, 2018: 25.18 ft
- May 21, 2017: 24.86 ft
- May 11, 2016: 25.65 ft
- December 15, 2015: 27.27 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. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. 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. Stage may be affected by ice.
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.