Thompson Falls Lake water level today
Reservoir in Sanders, Montana · Clark Fork River, Pend Oreille
2,396.11ft
730.33 m · NGVD29
Measured · provisional
Normal for the date
What this means
It is lower than on Oct 21 in 6 of the last 10 years.
The lake has risen 0.21 ft in 7 days and fallen 0.18 ft in 30 days.
Since 2005, the lowest daily level was 239.23 ft (Jun 2025) and the highest 2,396.99 ft (Aug 2026).
Thompson Falls Lake level chart
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Same date in past years
| Date | Level | vs today |
|---|---|---|
| Oct 21, 2025 | 2,396.17 ft | ▲ 0.06 ft |
| Oct 21, 2024 | 2,395.67 ft | ▼ 0.44 ft |
| Oct 21, 2023 | 2,380.36 ft | ▼ 15.75 ft |
| Oct 21, 2022 | 2,395.26 ft | ▼ 0.85 ft |
| Oct 21, 2021 | 2,396.35 ft | ▲ 0.24 ft |
| Oct 21, 2020 | 2,396.34 ft | ▲ 0.23 ft |
| Oct 21, 2019 | 2,396.26 ft | ▲ 0.15 ft |
| Oct 21, 2018 | 2,396.21 ft | ▲ 0.10 ft |
| Oct 21, 2017 | 2,395.92 ft | ▼ 0.19 ft |
| Oct 21, 2016 | 2,396.55 ft | ▲ 0.44 ft |
Records & details
- Highest
- 2,396.99 ft on Aug 1, 2026
- Lowest
- 239.23 ft on Jun 30, 2025
- Records from
- 2005 (21 years of daily data)
- Outflow
- 10,168 cfs (287.9 m³/s)
- Water temperature
- Not measured here
Weather & wind
This Afternoon75°F · Mostly Sunny
Wind ENE 1 mph
Wind ENE 1 mph
Tonight37°F · Mostly Clear
Wind S 1 mph
Wind S 1 mph
Thursday72°F · Patchy Fog then Mostly Sunny
Wind ESE 2 mph
Wind ESE 2 mph
Thursday Night39°F · Rain
Wind NW 3 mph
Wind NW 3 mph
Friday56°F · Light Rain
Wind W 7 mph
Wind W 7 mph
Friday Night27°F · Slight Chance Light Rain then Mostly Cloudy
Wind SW 3 mph
Wind SW 3 mph
NOAA National Weather Service forecast for this lake's location, updated 2 h ago.