Big Thompson River At Mouth, Near La Salle, Co. Realtime Data
BIG THOMPSON RIVER AT MOUTH, NEAR LA SALLE, CO.
Realtime Data • Report • Conditions
15
Discharge (cfs)
1.1
Gauge Height (ft)
USGS 06744000
Streamflow discharge was last observed at 15 cfs, and a gauge height of 1.08 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 40 .
Weather today, Tomorrow,
The river is primarily fed by snowmelt from the Rocky Mountains and has several tributaries, including the North Fork and South Fork. The river is also impounded by the Olympus Dam, which regulates water flow downstream. Seasonally, the river can experience high flows during spring runoff and low flows in the fall and winter months. Interestingly, the Big Thompson River is known for its devastating flash flood in 1976, which resulted in over 140 deaths and significant destruction in the canyon.
August 22, 2026
| Elevation | 4,681.0 ft |
| Last Updated | |
| Gage height, feet | 1.08 ft |
| Streamflow, ft3/s | 15.4 ft3/s |
| Percent of Normal | 29% |
| Year Over Year Average | 53 cfs |
| 24hr Flow Prediction | cfs |
| Maximum Recorded | 5,900 cfs |
| Geolocation | 40.35, -104.79 |
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