Montana Lake & Reservoir Conditions — Live Water Data

Montana Lake & Reservoir Levels

Live USGS water level data — refreshed every 15 minutes

Live — 10 of 10 lakes reporting
📅 Updated Aug 19, 2026 at 9:29 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
2,893.05
ft elevation
+0.06 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Largest natural freshwater lake W of Mississippi
Reading: 8:30 AM USGS →
Hebgen Lake
nr West Yellowstone
STABLE
6,531.49
ft NGVD
-0.01 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 8:45 AM USGS →
Hungry Horse Reservoir
nr Hungry Horse
FALLING
3,552.46
ft NGVD
-1.49 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Trophy bull trout & kokanee
Reading: 8:45 AM USGS →
Lake Sherburne
nr Babb
FALLING FAST
4,769.96
ft NGVD
-4.86 ft / 7 days
7-Day Change
—
Water Temp
⇩
Trend
⇩ Falling fast
Inside Glacier National Park
Reading: 9:00 AM USGS →
Lake Como
nr Darby
FALLING FAST
4,224.43
ft elevation
-4.77 ft / 7 days
7-Day Change
—
Water Temp
⇩
Trend
⇩ Falling fast
Bitterroot Valley cutthroat
Reading: 8:30 AM USGS →
Fort Peck Reservoir
nr Glasgow
STABLE
2,223.42
ft elevation
-0.02 ft today
Daily Change
85.8%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 8,000 cfs • Release 6,900 cfs USACE →
Canyon Ferry Reservoir
nr Townsend
STABLE
3,788.56
ft elevation
-0.04 ft today
Daily Change
85.0%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 921 cfs • Release 3,304 cfs USACE →
Bighorn Lake
nr Fort Smith
STABLE
3,622.64
ft elevation
+0.06 ft today
Daily Change
82.6%
Capacity
→
Trend
→ Stable
World-class brown trout fishery
Inflow 2,224 cfs • Release 1,928 cfs USACE →
Clark Canyon Reservoir
nr Grant
STABLE
5,514.48
ft elevation
-0.04 ft today
Daily Change
29.9%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 128 cfs • Release 178 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,989.50
ft elevation
-0.01 ft today
Daily Change
93.3%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 398 cfs • Release 738 cfs USACE →
Northwest Montana
Flathead Lake
at Polson
STABLE
2,893.05
ft elevation
+0.06 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Largest natural freshwater lake W of Mississippi
Reading: 8:30 AM USGS →
Hungry Horse Reservoir
nr Hungry Horse
FALLING
3,552.46
ft NGVD
-1.49 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Trophy bull trout & kokanee
Reading: 8:45 AM USGS →
Lake Sherburne
nr Babb
FALLING FAST
4,769.96
ft NGVD
-4.86 ft / 7 days
7-Day Change
—
Water Temp
⇩
Trend
⇩ Falling fast
Inside Glacier National Park
Reading: 9:00 AM USGS →
Southwest Montana
Hebgen Lake
nr West Yellowstone
STABLE
6,531.49
ft NGVD
-0.01 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 8:45 AM USGS →
Lake Como
nr Darby
FALLING FAST
4,224.43
ft elevation
-4.77 ft / 7 days
7-Day Change
—
Water Temp
⇩
Trend
⇩ Falling fast
Bitterroot Valley cutthroat
Reading: 8:30 AM USGS →
Clark Canyon Reservoir
nr Grant
STABLE
5,514.48
ft elevation
-0.04 ft today
Daily Change
29.9%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 128 cfs • Release 178 cfs USACE →
Central Montana
Canyon Ferry Reservoir
nr Townsend
STABLE
3,788.56
ft elevation
-0.04 ft today
Daily Change
85.0%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 921 cfs • Release 3,304 cfs USACE →
Bighorn Lake
nr Fort Smith
STABLE
3,622.64
ft elevation
+0.06 ft today
Daily Change
82.6%
Capacity
→
Trend
→ Stable
World-class brown trout fishery
Inflow 2,224 cfs • Release 1,928 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,989.50
ft elevation
-0.01 ft today
Daily Change
93.3%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 398 cfs • Release 738 cfs USACE →
Eastern Montana
Fort Peck Reservoir
nr Glasgow
STABLE
2,223.42
ft elevation
-0.02 ft today
Daily Change
85.8%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 8,000 cfs • Release 6,900 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.