Portage River near Vicksburg
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 8.00 ft |
| Moderate flood | 7.00 ft |
| Minor flood | 5.00 ft |
| Action | 4.50 ft |
- 8.00 ftExpect major flooding of several homes built adjacent to the river.
- 7.00 ftExpect moderate flooding of several homes built adjacent to the river. Water covers south 29th Street just south of EW Avenue.
- 6.00 ftExpect minor basement flooding of several homes built adjacent to the river.
- 5.50 ftMinor basement flooding begins at the first house near the gage.
- 5.00 ftExpect overflows into wooded areas, yards, a few outbuildings, and farmland adjacent to the river.
- 4.50 ftRiver is near bankfull.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 12% |
| Moderate flooding | 6% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
70 crests on NOAA’s list since 1947.
| # | Date | Stage |
|---|---|---|
| 1 | February 22, 2018 | 6.18 ft |
| 2 | May 19, 2020 | 5.83 ft |
| 3 | June 2, 1989 | 5.81 ft |
| 4 | August 18, 2016 | 5.78 ft |
| 5 | June 21, 2019 | 5.66 ft |
| 6 | April 7, 1947 | 5.66 ft |
| 7 | March 23, 1948 | 5.65 ft |
| 8 | September 15, 2008 | 5.62 ft |
| 9 | April 4, 1950 | 5.55 ft |
| 10 | February 27, 1985 | 5.55 ft |
| 11 | May 19, 2018 | 5.49 ft |
| 12 | March 7, 2018 | 5.49 ft |
| 13 | March 21, 1982 | 5.48 ft |
| 14 | February 3, 1968 | 5.47 ft |
| 15 | January 13, 2020 | 5.46 ft |
| 16 | March 12, 2009 | 5.46 ft |
| 17 | July 17, 2024 | 5.45 ft |
| 18 | March 5, 1976 | 5.38 ft |
| 19 | March 31, 2017 | 5.36 ft |
| 20 | June 30, 1978 | 5.35 ft |
| 21 | June 8, 1980 | 5.23 ft |
| 22 | January 30, 1969 | 5.23 ft |
| 23 | January 2, 1973 | 5.22 ft |
| 24 | March 6, 1979 | 5.21 ft |
| 25 | March 9, 1974 | 5.21 ft |
Most recent crests
- July 17, 2024: 5.45 ft
- July 10, 2024: 5.06 ft
- January 30, 2024: 5.13 ft
- April 10, 2023: 4.94 ft
- February 23, 2022: 5.09 ft
- June 27, 2021: 4.86 ft
- May 19, 2020: 5.83 ft
- January 13, 2020: 5.46 ft
- June 21, 2019: 5.66 ft
- May 20, 2019: 5.20 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the North Central 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 during winter months.
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.