Rivers in Idaho
Portneuf River at Topaz
Below flood stage
2.46ftStage
Observed Fri, Oct 2, 7:15 PM MDT
- Flood stage
- 4.02 ft
- Forecast crest
- 2.50 ftSun, Oct 11, 6:00 AM MDT
- Record crest
- 6.00 ft1964
Flood stages and impacts
| Category | Stage |
|---|---|
| Minor flood | 4.02 ft |
| Action | 3.50 ft |
- 4.02 ftLowland and crop field flooding possible from Pebble Creek to Inkom.
- 3.50 ftNear bankfull from Pebble Creek Road downstream to Inkom. Isolated ponding in flat areas near Symons Road.
Crest history
28 crests on NOAA’s list since 1957.
| # | Date | Stage |
|---|---|---|
| 1 | December 23, 1964 | 6.00 ft |
| 2 | February 25, 1957 | 5.71 ft |
| 3 | February 20, 1980 | 5.59 ft |
| 4 | January 22, 1969 | 5.56 ft |
| 5 | May 21, 1984 | 5.42 ft |
| 6 | May 18, 1996 | 5.39 ft |
| 7 | May 14, 1971 | 5.32 ft |
| 8 | April 10, 1976 | 5.27 ft |
| 9 | May 18, 1997 | 5.24 ft |
| 10 | May 31, 1983 | 5.20 ft |
| 11 | May 2, 2006 | 5.00 ft |
| 12 | March 23, 2018 | 4.92 ft |
| 13 | May 15, 2011 | 4.83 ft |
| 14 | February 22, 2017 | 4.51 ft |
| 15 | February 11, 2007 | 4.04 ft |
| 16 | June 8, 2010 | 3.89 ft |
| 17 | June 12, 2009 | 3.83 ft |
| 18 | January 21, 2012 | 3.75 ft |
| 19 | June 2, 2019 | 3.72 ft |
| 20 | February 15, 2014 | 3.55 ft |
| 21 | May 17, 2005 | 3.48 ft |
| 22 | May 3, 2020 | 3.44 ft |
| 23 | June 7, 2021 | 3.28 ft |
| 24 | April 15, 2008 | 3.25 ft |
| 25 | April 14, 2016 | 3.17 ft |
Most recent crests
- May 8, 2022: 3.11 ft
- June 7, 2021: 3.28 ft
- May 3, 2020: 3.44 ft
- June 2, 2019: 3.72 ft
- March 23, 2018: 4.92 ft
- February 22, 2017: 4.51 ft
- April 14, 2016: 3.17 ft
- May 16, 2015: 2.92 ft
- February 15, 2014: 3.55 ft
- March 21, 2013: 2.79 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Northwest River Forecast Center. Forecasts are not available. Only observed stages are available for this point. 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.