Helena Valley Reservoir water level today
Reservoir in Montana
3,817.63ft
1,163.61 m · NAVD88
Measured · provisional
24 hours
▼ 0.02 ft
7 days
▼ 0.17 ft
30 days
–
What this means
The lake has fallen 0.17 ft in 7 days.
Since 2026, the lowest daily level was 3,817.63 ft (Oct 2026) and the highest 3,817.96 ft (Oct 2026).
Helena Valley Reservoir level chart
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Records & details
- Highest
- 3,817.96 ft on Oct 7, 2026
- Lowest
- 3,817.63 ft on Oct 21, 2026
- Records from
- 2026 (0 years of daily data)
- Storage
- 9,236 acre-ft
- Water temperature
- Not measured here
Helena Valley Dam
- Height
- 94 ft
- Completed
- 1959
- Purposes
- Irrigation; Water Supply
- Owner
- BUREAU OF RECLAMATION
- Normal storage
- 10,451 acre-ft
- Surface area
- 531 acres
National Inventory of Dams (U.S. Army Corps of Engineers). All dam facts →
Campgrounds near Helena Valley Reservoir
- Devil's Elbow Campground
- Riverside Campground
- White Sandy Campground
- Court Sheriff Campground
- Chinamen's Campground
All 7 campgrounds, reservations and phone numbers →
Federal campgrounds from Recreation.gov; straight-line distance from the lake's gauge or dam.
Weather & wind
This Afternoon53°F · Rain And Snow
Wind NW 14 to 21 mph
Wind NW 14 to 21 mph
Tonight22°F · Rain And Snow Likely then Patchy Fog
Wind W 1 to 13 mph
Wind W 1 to 13 mph
Saturday48°F · Sunny
Wind SE 2 to 7 mph
Wind SE 2 to 7 mph
Saturday Night22°F · Mostly Clear
Wind SE 3 mph
Wind SE 3 mph
Sunday47°F · Mostly Sunny
Wind NNW 3 mph
Wind NNW 3 mph
Sunday Night21°F · Partly Cloudy
Wind NW 1 to 6 mph
Wind NW 1 to 6 mph
NOAA National Weather Service forecast for this lake's location, updated 1 h ago.