RIVER GAUGE · PORTNEUF RIVER
Portneuf River at Tyhee
Bannock County, Idaho
Water level4.46 ft
Flow383 cfs
Last readingSep 16, 2026, 4:00 PM UTC (last recorded)
Action5.83 ft1,116 cfs
Minor flood6.23 ft1,309 cfs
The past week
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What floods at each level
- 6.23 ft
Lowland field and crop flooding possible from US HWY 30 bridge near Simplot Plant to American Falls Reservoir.
- 5.83 ft
Near bankfull from US HWY 30 bridge near Simplot Plant to American Falls Reservoir. Some ponding possible in low-lying areas.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| May 5, 1986 | 6.76 ft | 1,740 cfs |
| Sep 2, 2013 | 6.69 ft | 878 cfs |
| May 2, 2006 | 6.44 ft | 1,630 cfs |
More on Portneuf River
UpstreamPortneuf River at Pocatello
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