Thompson River river
Total streamflow across the Thompson River was last observed at 5,020 cfs, and is expected to yield approximately 9,957 acre-ft of water today; about 230% of normal. River levels are high. Average streamflow for this time of year is 2,186 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 3,750 cfs. This is also the highest stage along the Thompson River, with a gauge stage of 16.23 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 streamflow levels
Daily aggregate streamflow across every monitored gauge along the Thompson River. Use the range buttons to zoom in on a specific period.
Total streamflow
Sum of all monitored streamgauges · daily
Every streamgauge along the Thompson River
All 3 USGS gauges Snoflo tracks for this river, with current flow, stage, recent change, percent of normal, and the gauge's all-time min / max. Click any header to sort. Cells are heatmapped relative to the column min/max -- darker blue = higher.
| Streamgauge▾ | Streamflow (cfs)▾ | Gauge stage (ft)▾ | 24h Δ (%)▾ | % Normal▾ | Min (cfs)▾ | Max (cfs)▾ | Elevation (ft)▾ |
|---|---|---|---|---|---|---|---|
|
Thompson River Near Thompson Falls Mt
MT
USGS 12389500
|
417 | 3.36 | -3.9 | 73% | 74 | 4,510 | 2,440 |
|
Thompson River At Davis City
IA
USGS 06898000
|
853 | 2.99 | -41.2 | 318% | 4 | 36,100 | 910 |
|
Thompson River At Trenton
MO
USGS 06899500
|
3,750 | 16.23 | -58.5 | 645% | 5 | 76,900 | 738 |
Maximum streamflow discharge by year
The single highest aggregate discharge recorded each year. Spotting the multi-year trend reveals droughts vs. wet cycles long before the headline daily flow does.
Annual peak discharge
From the river's full record · one point per water year
Streamflow elevation profile
Each bubble is one gauge along the river, plotted by current streamflow (x-axis) vs elevation (y-axis), sized by gauge stage. Reading top-to-bottom traces the river from headwaters down to its mouth -- you can see flow accumulate as elevation drops.
Elevation vs streamflow
One point per monitored gauge · bubble size = gauge stage
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.
Track the Thompson River in the Snoflo app
Set per-gauge push alerts (e.g. "alert me when flow at the Russian R Nr Healdsburg crosses 5,000 cfs"), and Snoflo's iOS app pushes the moment USGS reports the crossing.
About the Thompson River
Where does the data for the Thompson River come from?
Streamflow and gauge stage data are sourced from the U.S. Geological Survey (USGS) National Water Information System. The aggregate flow shown at the top of the page is computed by Snoflo as the sum of all monitored gauges along the river.
How is "percent of normal" calculated?
Today's aggregate streamflow is compared to the historical average aggregate streamflow on this calendar day across the river's full record. 100% means right on average; values above 100% indicate above-normal flow (wet year); values below indicate below-normal (dry year or drought).
Why are some gauges showing very different flows?
Gauges along a river measure flow at different points: headwater gauges read what's coming off the snowpack or mountain runoff; downstream gauges integrate everything upstream, including tributary inputs. Wide spreads usually mean a tributary is contributing significantly between gauges.
What's the elevation profile chart showing?
Each bubble is one gauge along the river, plotted by streamflow (x-axis) and elevation (y-axis), sized by gauge stage. Reading top-down traces the river from headwaters to mouth -- you can see flow build as elevation drops.
Can I get alerts when a specific gauge crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app on a per-gauge basis. Open any individual streamgauge from the table above and favorite it to set a discharge threshold.