Garrison Reservoir water level today
Reservoir in Mercer, North Dakota · Missouri River
1,823.98ft
555.95 m · NGVD29
Measured · provisional
Below normal for the dateSteady
What this means
Garrison Reservoir is 13.52 ft below its full pool of 1,837.50 ft.
It is lower than on Oct 21 in every one of the last 10 years on record.
The lake has fallen 0.10 ft in 7 days and fallen 0.32 ft in 30 days.
Since 1989, the lowest daily level was 1,805.80 ft (May 2005) and the highest 1,854.54 ft (Jul 2011).
Garrison Reservoir level chart
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Full pool
Same date in past years
| Date | Level | vs today |
|---|---|---|
| Oct 21, 2025 | 1,831.60 ft | ▲ 7.62 ft |
| Oct 21, 2024 | 1,837.88 ft | ▲ 13.90 ft |
| Oct 21, 2023 | 1,840.13 ft | ▲ 16.15 ft |
| Oct 21, 2022 | 1,833.54 ft | ▲ 9.56 ft |
| Oct 21, 2021 | 1,830.66 ft | ▲ 6.68 ft |
| Oct 21, 2020 | 1,839.14 ft | ▲ 15.16 ft |
| Oct 21, 2019 | 1,843.87 ft | ▲ 19.89 ft |
| Oct 21, 2018 | 1,842.39 ft | ▲ 18.41 ft |
| Oct 21, 2017 | 1,841.64 ft | ▲ 17.66 ft |
| Oct 21, 2016 | 1,838.92 ft | ▲ 14.94 ft |
Records & details
- Highest
- 1,854.54 ft on Jul 4, 2011
- Lowest
- 1,805.80 ft on May 12, 2005
- Records from
- 1989 (37 years of daily data)
- Full pool
- 1,837.50 ft (top of conservation pool, U.S. Army Corps of Engineers)
- Inflow
- 13,000 cfs (368.1 m³/s)
- Outflow
- 12,563 cfs (355.7 m³/s)
- Water temperature
- 58 °F (14.4 °C)
Weather & wind
This Afternoon65°F · Sunny
Wind SE 12 mph
Wind SE 12 mph
Tonight42°F · Mostly Clear
Wind SE 9 mph
Wind SE 9 mph
Thursday75°F · Sunny
Wind S 8 to 12 mph
Wind S 8 to 12 mph
Thursday Night53°F · Partly Cloudy
Wind SE 8 mph
Wind SE 8 mph
Friday78°F · Mostly Cloudy
Wind SE 7 to 16 mph
Wind SE 7 to 16 mph
Friday Night40°F · Partly Cloudy
Wind SW 13 to 30 mph
Wind SW 13 to 30 mph
NOAA National Weather Service forecast for this lake's location, updated 51 min ago.