Thompson River Flow Today
As of October 2, 2026 at 2:45 AM, the Thompson River is flowing at 20,500 cfs at Trenton, MO and up 26% in 24 hours. 3 of 3 USGS gauges reported in the last 3 days; flows range from 149 to 20,500 cfs. ❤ Favorite
Thompson River map
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Every gauge, dam and paddle run on the river, one tap each:
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Thompson 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 Trenton, the Thompson River is running 20,500 cfs, up 26% since yesterday. Along the river, 1 of 1 reporting gauges are near normal (the typical gauge is at 102% of normal).
In the last 24 hours the river is rising at Trenton (+26%) and Davis City (+12%).
Flood watch: Davis City is at action stage (9.83 ft); Trenton is at action stage (24.13 ft). Check NWS before heading out.
High water on the Thompson River
Thompson River At Davis City is at 9.83 ft — action stage (flood stage 12.0 ft).
Thompson River At Trenton is at 24.13 ft — action stage (flood stage 27.0 ft).
How the Thompson 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
- Thompson Falls Mount2,440 ft 149 cfs102%
- Davis City910 ft 9,480 cfs
- Trenton738 ft 20,500 cfs
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 Thompson River streamgauge, placed by its own percent of normal. The line is the typical gauge (102%).
Thompson River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | To flood stage | Elevation |
|---|---|---|---|---|---|---|
|
Thompson River Near Thompson Falls Mount MT
Oct 2, 1:45 AM · USGS 12389500 |
149 cfs | 102% | 0% | 2.75 ft | · | 2,440 ft |
|
Thompson River At Davis City IA
Oct 2, 2:00 AM · USGS 06898000 |
9,480 cfs | · | +12% | 9.83 ft | Action | 910 ft |
|
Thompson River At Trenton MO
Oct 2, 2:45 AM · USGS 06899500 |
20,500 cfs | · | +26% | 24.13 ft | Action | 738 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.
Thompson River streamflow over time
Daily total flow across every monitored gauge on the river.
Maximum streamflow by year
Thompson River
The Thompson River is a major tributary of the Fraser River, flowing 489 km through British Columbia, Canada. The river has a rich history, beginning with the Indigenous peoples who have lived along its banks for thousands of years. It was also an important transportation route during the fur trade era and later for the Canadian Pacific Railway. The river's hydrology is affected by seasonal snowmelt and precipitation, resulting in high water levels in the spring and low water levels in the summer. The river is home to several reservoirs and dams, including the Nicola Dam and Reservoir and the Mica Dam and Reservoir. These reservoirs serve as important sources of hydroelectric power for the region. The Thompson River is also an important source of irrigation water for agricultural lands in the region. Recreational activities along the river include fishing, rafting, and camping.
About the Thompson River
How is the Thompson River flowing right now?
As of October 2, 2026, the Thompson River is flowing at 20,500 cfs at Trenton, MO. Across its 3 USGS gauges, current flows range from 149 to 20,500 cfs. Every gauge’s live reading is in the table above.
Is the Thompson River running high or low?
The typical gauge on the Thompson River is at 102% 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 Thompson River?
The National Weather Service sets flood stages for Davis City (12.0 ft), Trenton (27.0 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.