Thompson River River Levels

Last Updated: December 4, 2025

The Thompson River is a major tributary of the Fraser River, flowing 489 km through British Columbia, Canada.


Summary

Total streamflow across the Thompson River was last observed at 282 cfs, and is expected to yield approximately 559 acre-ft of water today; about 22% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 1,285 cfs, with recent peaks last observed on 2014-09-11 when daily discharge volume was observed at 89,587 cfs.

Maximum discharge along the river is currently at the Thompson River At Trenton reporting a streamflow rate of 154 cfs. This is also the highest stage along the Thompson River, with a gauge stage of 10.41 ft at this location. This river is monitored from 3 different streamgauging stations along the Thompson River, the highest being situated at an altitude of 2,440 ft, the Thompson River Near Thompson Falls Mt.

River Details

Last Updated 2025-12-04
Discharge Volume 559 ACRE-FT
Streamflow 282.0 cfs
+8.0 cfs (+2.92%)
Percent of Normal 21.95%
Maximum 89,587.0 cfs
2014-09-11
Seasonal Avg 1,285 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Thompson River Near Thompson Falls Mt
USGS 12389500
128 cfs 2.7 ft -2.29
Thompson River At Davis City
USGS 06898000
22 cfs 0.76 ft 4.67
Thompson River At Trenton
USGS 06899500
154 cfs 10.41 ft 7.69
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Thompson River is the largest tributary of the Fraser River, flowing through the south-central portion of British Columbia, Canada. The Thompson River has two main branches, the South Thompson River and the North Thompson River. The river is home to several varieties of Pacific salmon and trout. The area's geological history was heavily influenced by glaciation, and the several large glacial lakes have filled the river valley over the last 12,000 years. Archaeological evidence shows human habitation in the watershed dating back at least 8,300 years. The Thompson was named by Fraser River explorer, Simon Fraser, in honour of his friend, Columbia Basin explorer David Thompson. Recreational use of the river includes whitewater rafting and angling.