RIVER GAUGE · PORTNEUF RIVER
Portneuf River at Topaz
Bannock County, Idaho
Water level2.52 ft
Flow78 cfs
Last readingSep 16, 2026, 4:15 PM UTC (last recorded)
Action3.5 ft427 cfs
Minor flood4.02 ft641 cfs
The past week
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What floods at each level
- 4.02 ft
Lowland and crop field flooding possible from Pebble Creek to Inkom.
- 3.5 ft
Near bankfull from Pebble Creek Road downstream to Inkom. Isolated ponding in flat areas near Symons Road.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Dec 22, 1964 | 6 ft | 1,740 cfs |
| Feb 24, 1957 | 5.71 ft | 1,040 cfs |
| Feb 19, 1980 | 5.59 ft | 1,150 cfs |
More on Portneuf River
UpstreamPortneuf River at Pebble ID ↗
DownstreamPortneuf River at Inkom, ID ↗
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