Montana Lake & Reservoir Conditions — Live Water Data

Montana Lake & Reservoir Levels

Live USGS water level data — refreshed every 15 minutes

Live — 9 of 9 lakes reporting
📅 Updated Oct 11, 2026 at 5:14 AM
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
2,892.37
ft elevation
-0.28 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Largest natural freshwater lake W of Mississippi
Reading: 4:30 AM USGS →
Hebgen Lake
nr West Yellowstone
FALLING
6,529.88
ft NGVD
-0.33 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
World-class fly fishing
Reading: 4:45 AM USGS →
Hungry Horse Reservoir
nr Hungry Horse
FALLING
3,542.83
ft NGVD
-1.13 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Trophy bull trout & kokanee
Reading: 4:45 AM USGS →
Lake Sherburne
nr Babb
RISING
4,743.82
ft NGVD
+1.07 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Inside Glacier National Park
Reading: 4:00 AM USGS →
Lake Como
nr Darby
FALLING
4,206.50
ft elevation
-0.84 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Bitterroot Valley cutthroat
Reading: 4:30 AM USGS →
Fort Peck Reservoir
nr Glasgow
FALLING
2,221.87
ft elevation
-0.11 ft today
Daily Change
—
Capacity
↓
Trend
↓ Falling
Walleye capital of Montana
Inflow — cfs • Release — cfs USACE →
Canyon Ferry Reservoir
nr Townsend
STABLE
3,784.34
ft elevation
-0.06 ft today
Daily Change
78.2%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 1,963 cfs • Release 3,042 cfs USACE →
Bighorn Lake
nr Fort Smith
FALLING
3,624.47
ft elevation
-0.21 ft today
Daily Change
84.0%
Capacity
↓
Trend
↓ Falling
World-class brown trout fishery
Inflow 794 cfs • Release 1,617 cfs USACE →
Clark Canyon Reservoir
nr Grant
STABLE
5,516.10
ft elevation
+0.04 ft today
Daily Change
32.3%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 119 cfs • Release 26 cfs USACE →
Northwest Montana
Flathead Lake
at Polson
STABLE
2,892.37
ft elevation
-0.28 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Largest natural freshwater lake W of Mississippi
Reading: 4:30 AM USGS →
Hungry Horse Reservoir
nr Hungry Horse
FALLING
3,542.83
ft NGVD
-1.13 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Trophy bull trout & kokanee
Reading: 4:45 AM USGS →
Lake Sherburne
nr Babb
RISING
4,743.82
ft NGVD
+1.07 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Inside Glacier National Park
Reading: 4:00 AM USGS →
Southwest Montana
Hebgen Lake
nr West Yellowstone
FALLING
6,529.88
ft NGVD
-0.33 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
World-class fly fishing
Reading: 4:45 AM USGS →
Lake Como
nr Darby
FALLING
4,206.50
ft elevation
-0.84 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Bitterroot Valley cutthroat
Reading: 4:30 AM USGS →
Clark Canyon Reservoir
nr Grant
STABLE
5,516.10
ft elevation
+0.04 ft today
Daily Change
32.3%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 119 cfs • Release 26 cfs USACE →
Central Montana
Canyon Ferry Reservoir
nr Townsend
STABLE
3,784.34
ft elevation
-0.06 ft today
Daily Change
78.2%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 1,963 cfs • Release 3,042 cfs USACE →
Bighorn Lake
nr Fort Smith
FALLING
3,624.47
ft elevation
-0.21 ft today
Daily Change
84.0%
Capacity
↓
Trend
↓ Falling
World-class brown trout fishery
Inflow 794 cfs • Release 1,617 cfs USACE →
Eastern Montana
Fort Peck Reservoir
nr Glasgow
FALLING
2,221.87
ft elevation
-0.11 ft today
Daily Change
—
Capacity
↓
Trend
↓ Falling
Walleye capital of Montana
Inflow — cfs • Release — 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.