Portneuf River
Last Updated: April 20, 2026
Total streamflow across the
Portneuf River
was last observed at
657
cfs, and is expected to yield approximately
1,303
acre-ft of water today; about 50%
of normal.
River levels are low and may signify a drought.
Average streamflow for this time of year is
1,308 cfs,
with recent peaks last observed
on
2023-05-28 when daily discharge volume was observed at
3,549 cfs.
Maximum discharge along the river is currently at the
Portneuf River Nr Tyhee Id
reporting a streamflow rate of 332 cfs.
However, the streamgauge with the highest stage along the river is the
Portneuf River At Pocatello Id
with a gauge stage of 4.44 ft.
This river is monitored from 3 different streamgauging stations along the Portneuf River, the highest being situated at an altitude of 4,925 ft, the
Portneuf River At Topaz Id.
Get the latest River Levels, Streamflow, and Hydrology for Portneuf River in River flows across 3 streamgages of the Portneuf River
15-Day Long Term Forecast
River Details
| Last Updated | 2026-04-20 |
| Discharge Volume | 1,303 ACRE-FT |
| Streamflow |
657.0 cfs
Past 24 Hours: -54.0 cfs (-7.59%) |
| Percent of Normal | 50.22% |
| Maximum |
3,549.0 cfs
2023-05-28 |
| Seasonal Avg | 1,308 cfs |
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Portneuf River At Topaz Id
USGS 13073000 |
124 cfs | 2.67 ft | 0.81 | |||||
|
Portneuf River At Pocatello Id
USGS 13075500 |
201 cfs | 4.44 ft | -6.07 | |||||
|
Portneuf River Nr Tyhee Id
USGS 13075910 |
332 cfs | 3.7 ft | -11.23 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
Portneuf is a municipality in the Portneuf Regional County Municipality, in the province of Quebec, Canada. It is located on the Saint Lawrence River, between Quebec City and Trois-Rivières. The Portneuf River runs on the east side of the town centre.
The town of Portneuf is named after a seignory that was founded in 1636, and first settled in 1640.
The municipal territory consists of 2 non-contiguous areas, separated by the municipality of Sainte-Christine-d'Auvergne. The smaller northern portion is undeveloped, whereas the southern piece is the main inhabited part with the population centres of Portneuf (south of Autoroute 40), and the adjacent Notre-Dame-de-Portneuf, north of A-40. The present-day municipality was created in 2002, when the old city of Portneuf merged with the town of Notre-Dame-de-Portneuf.The town is located on the Chemin du Roy, a historic segment of Quebec Route 138 that stretches from near Montreal to Quebec City. The town is also close by to A-40, where Provencher Street connects to the town at Exit 261.
One of Portneuf's major employers is a local paper mill owned by Metro Paper Industries, a Toronto-based paper company. Paper had been a major part of Portneuf's development since the first paper mill opened in 1839.
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