Portneuf River Flow Today
As of October 23, 2026 at 1:00 AM, the Portneuf River is flowing at 264 cfs near Tyhee Id, ID — 62% of normal for the date and down 3% in 24 hours. 3 of 3 USGS gauges reported in the last 3 days; flows range from 88 to 264 cfs. ❤ Favorite
Portneuf River map
See the Portneuf River on a live map
Every gauge, dam and paddle run on the river, one tap each:
- Gauges now — which reaches are high or low
- Dams & paddle runs — storage and what’s in range
- Rain — past 24 hrs and the 72-hr forecast, press play
✓ Free for 7 days · ✓ Cancel anytime
Portneuf River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Tyhee Id, the Portneuf River is running 264 cfs — 62% of normal, down 3% since yesterday. Along the river, 3 of 3 reporting gauges are below normal (the typical gauge is at 80% of normal).
How the Portneuf River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Topaz Id4,925 ft 88 cfs89%
- Pocatello Id4,436 ft 139 cfs80%
- Tyhee Id4,370 ft 264 cfs62%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Portneuf River streamgauge, placed by its own percent of normal. The line is the typical gauge (80%).
Portneuf River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | To flood stage | Elevation |
|---|---|---|---|---|---|---|
|
Portneuf River At Topaz Id ID
Oct 23, 1:15 AM · USGS 13073000 |
88 cfs | 89% | +7% | 2.51 ft | · | 4,925 ft |
|
Portneuf River At Pocatello Id ID
Oct 23, 1:45 AM · USGS 13075500 |
139 cfs | 80% | -1% | 3.70 ft | 4.8 ft below | 4,436 ft |
|
Portneuf River Near Tyhee Id ID
Oct 23, 1:00 AM · USGS 13075910 |
264 cfs | 62% | -3% | 4.55 ft | · | 4,370 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Dams & reservoirs on the Portneuf River
Releases from these dams shape the flow downstream. Tap one for its daily level and history.
Portneuf River streamflow over time
Daily total flow across every monitored gauge on the river.
Maximum streamflow by year
About the Portneuf River
How is the Portneuf River flowing right now?
As of October 23, 2026, the Portneuf River is flowing at 264 cfs near Tyhee Id, ID, about 62% of normal for the date. Across its 3 USGS gauges, current flows range from 88 to 264 cfs. Every gauge’s live reading is in the table above.
Is the Portneuf River running high or low?
The typical gauge on the Portneuf River is at 80% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
What is flood stage on the Portneuf River?
The National Weather Service sets flood stages for Pocatello Id (8.5 ft), . The table shows how far each gauge is below its flood stage right now.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.