Republican River at Guide Rock
Observed Mon, Sep 21, 11:30 PM CDT
- Flood stage
- 12.50 ft
- Record crest
- 15.47 ft1993
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 17.00 ft |
| Moderate flood | 15.00 ft |
| Minor flood | 12.50 ft |
| Action | 10.50 ft |
- 21.50 ftFloodwaters reach the bottom of the bridge at the gage site.
- 15.00 ftHighway 78 south of the bridge will be impacted along with numerous county roads including River Road as well as Road B and E. In addition, a home will be threatened downstream on the south side of the river off of Road 3600 south of Superior. This home required sandbagging during the July flooding of 2019 when the river crest at Guide Rock reached 15.1 feet.
- 12.50 ftMinor agricultural lowland flooding occurs and roads B and E will begin to be impacted.
- 10.50 ftWater begins spilling out of the river banks.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 26, 2026.
Crest history
42 crests on NOAA’s list since 1985.
| # | Date | Stage |
|---|---|---|
| 1 | July 19, 1993 | 15.47 ft |
| 2 | July 11, 2019 | 15.08 ft |
| 3 | May 28, 2019 | 14.85 ft |
| 4 | August 25, 2019 | 14.31 ft |
| 5 | May 25, 2008 | 14.06 ft |
| 6 | May 15, 1985 | 13.63 ft |
| 7 | July 13, 1992 | 13.38 ft |
| 8 | July 19, 2017 | 13.31 ft |
| 9 | May 25, 2011 | 12.95 ft |
| 10 | May 23, 2020 | 12.82 ft |
| 11 | June 13, 2010 | 12.51 ft |
| 12 | May 6, 2007 | 12.44 ft |
| 13 | July 5, 2000 | 12.40 ft |
| 14 | July 1, 1989 | 12.25 ft |
| 15 | March 15, 2021 | 11.64 ft |
| 16 | July 23, 1996 | 11.64 ft |
| 17 | May 21, 1999 | 11.22 ft |
| 18 | July 19, 1988 | 10.90 ft |
| 19 | August 3, 1990 | 10.83 ft |
| 20 | March 23, 1987 | 10.77 ft |
| 21 | July 7, 2022 | 10.37 ft |
| 22 | September 6, 1986 | 10.29 ft |
| 23 | March 4, 1994 | 10.19 ft |
| 24 | June 6, 2015 | 10.08 ft |
| 25 | March 10, 2001 | 9.89 ft |
Most recent crests
- August 10, 2025: 9.13 ft
- May 26, 2024: 8.32 ft
- July 5, 2023: 6.90 ft
- July 7, 2022: 10.37 ft
- March 15, 2021: 11.64 ft
- May 23, 2020: 12.82 ft
- August 25, 2019: 14.31 ft
- July 11, 2019: 15.08 ft
- May 28, 2019: 14.85 ft
- September 4, 2018: 8.44 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 48 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 24 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.