Montana Lake & Reservoir Conditions — Live Water Data

Montana Lake & Reservoir Levels

Live USGS water level data — refreshed every 15 minutes

Live — 9 of 10 lakes reporting
📅 Updated Oct 6, 2026 at 7:59 PM
Rising fast (>+1.5 ft/week)
Rising (+0.3–1.5 ft/week)
Stable (±0.3 ft/week)
Falling (−0.3–1.5 ft/week)
Falling fast (>−1.5 ft/week)
All Lakes
Northwest Montana
Southwest Montana
Central Montana
Eastern Montana
Flathead Lake
at Polson
STABLE
2,892.55
ft elevation
-0.22 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Largest natural freshwater lake W of Mississippi
Reading: 7:30 PM USGS →
Hebgen Lake
nr West Yellowstone
STABLE
6,530.16
ft NGVD
-0.22 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 7:45 PM USGS →
Hungry Horse Reservoir
nr Hungry Horse
FALLING
3,543.44
ft NGVD
-1.43 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Trophy bull trout & kokanee
Reading: 6:45 PM USGS →
Lake Sherburne
nr Babb
NO DATA
—
ft NGVD
No change
7-Day Change
—
Water Temp
→
Trend
→ Stable
Inside Glacier National Park
Updated daily USGS →
Lake Como
nr Darby
FALLING
4,207.02
ft elevation
-0.45 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Bitterroot Valley cutthroat
Reading: 7:30 PM USGS →
Fort Peck Reservoir
nr Glasgow
STABLE
2,222.10
ft elevation
+0.04 ft today
Daily Change
84.1%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 6,000 cfs • Release 7,000 cfs USACE →
Canyon Ferry Reservoir
nr Townsend
STABLE
3,784.64
ft elevation
-0.05 ft today
Daily Change
78.6%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 2,272 cfs • Release 3,042 cfs USACE →
Bighorn Lake
nr Fort Smith
STABLE
3,624.61
ft elevation
+0.07 ft today
Daily Change
84.1%
Capacity
→
Trend
→ Stable
World-class brown trout fishery
Inflow 1,929 cfs • Release 1,694 cfs USACE →
Clark Canyon Reservoir
nr Grant
STABLE
5,515.76
ft elevation
+0.07 ft today
Daily Change
31.8%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 118 cfs • Release 26 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,987.73
ft elevation
-0.04 ft today
Daily Change
90.1%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 96 cfs • Release 509 cfs USACE →
Northwest Montana
Flathead Lake
at Polson
STABLE
2,892.55
ft elevation
-0.22 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Largest natural freshwater lake W of Mississippi
Reading: 7:30 PM USGS →
Hungry Horse Reservoir
nr Hungry Horse
FALLING
3,543.44
ft NGVD
-1.43 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Trophy bull trout & kokanee
Reading: 6:45 PM USGS →
Lake Sherburne
nr Babb
NO DATA
—
ft NGVD
No change
7-Day Change
—
Water Temp
→
Trend
→ Stable
Inside Glacier National Park
Updated daily USGS →
Southwest Montana
Hebgen Lake
nr West Yellowstone
STABLE
6,530.16
ft NGVD
-0.22 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 7:45 PM USGS →
Lake Como
nr Darby
FALLING
4,207.02
ft elevation
-0.45 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Bitterroot Valley cutthroat
Reading: 7:30 PM USGS →
Clark Canyon Reservoir
nr Grant
STABLE
5,515.76
ft elevation
+0.07 ft today
Daily Change
31.8%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 118 cfs • Release 26 cfs USACE →
Central Montana
Canyon Ferry Reservoir
nr Townsend
STABLE
3,784.64
ft elevation
-0.05 ft today
Daily Change
78.6%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 2,272 cfs • Release 3,042 cfs USACE →
Bighorn Lake
nr Fort Smith
STABLE
3,624.61
ft elevation
+0.07 ft today
Daily Change
84.1%
Capacity
→
Trend
→ Stable
World-class brown trout fishery
Inflow 1,929 cfs • Release 1,694 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,987.73
ft elevation
-0.04 ft today
Daily Change
90.1%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 96 cfs • Release 509 cfs USACE →
Eastern Montana
Fort Peck Reservoir
nr Glasgow
STABLE
2,222.10
ft elevation
+0.04 ft today
Daily Change
84.1%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 6,000 cfs • Release 7,000 cfs USACE →

Data: USGS National Water Information System — Elevations above NGVD 1929 or local datum. Provisional data subject to revision.

Lake levels fluctuate naturally with season, precipitation, and reservoir operations.