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 Jun 17, 2026 at 1:44 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
2,893.01
ft elevation
+0.06 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Largest natural freshwater lake W of Mississippi
Reading: 1:30 PM USGS →
Hebgen Lake
nr West Yellowstone
STABLE
6,534.59
ft NGVD
-0.14 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 12:45 PM USGS →
Hungry Horse Reservoir
nr Hungry Horse
RISING
3,558.58
ft NGVD
+1.25 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Trophy bull trout & kokanee
Reading: 12:45 PM USGS →
Lake Sherburne
nr Babb
RISING FAST
4,787.97
ft NGVD
+2.16 ft / 7 days
7-Day Change
—
Water Temp
⇧
Trend
⇧ Rising fast
Inside Glacier National Park
Reading: 1:00 PM USGS →
Fort Peck Reservoir
nr Glasgow
STABLE
2,223.83
ft elevation
+0.05 ft today
Daily Change
86.3%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 10,000 cfs • Release 6,800 cfs USACE →
Canyon Ferry Reservoir
nr Townsend
STABLE
3,790.12
ft elevation
-0.01 ft today
Daily Change
87.7%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 3,119 cfs • Release 3,282 cfs USACE →
Bighorn Lake
nr Fort Smith
RISING
3,622.96
ft elevation
+0.12 ft today
Daily Change
82.9%
Capacity
↑
Trend
↑ Rising
World-class brown trout fishery
Inflow 2,382 cfs • Release 1,922 cfs USACE →
Clark Canyon Reservoir
nr Grant
FALLING
5,524.55
ft elevation
-0.25 ft today
Daily Change
46.9%
Capacity
↓
Trend
↓ Falling
Southwest MT trophy trout
Inflow 130 cfs • Release 555 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,992.46
ft elevation
+0.03 ft today
Daily Change
99.0%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 1,159 cfs • Release 837 cfs USACE →
Northwest Montana
Flathead Lake
at Polson
STABLE
2,893.01
ft elevation
+0.06 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Largest natural freshwater lake W of Mississippi
Reading: 1:30 PM USGS →
Hungry Horse Reservoir
nr Hungry Horse
RISING
3,558.58
ft NGVD
+1.25 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Trophy bull trout & kokanee
Reading: 12:45 PM USGS →
Lake Sherburne
nr Babb
RISING FAST
4,787.97
ft NGVD
+2.16 ft / 7 days
7-Day Change
—
Water Temp
⇧
Trend
⇧ Rising fast
Inside Glacier National Park
Reading: 1:00 PM USGS →
Southwest Montana
Hebgen Lake
nr West Yellowstone
STABLE
6,534.59
ft NGVD
-0.14 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 12:45 PM USGS →
Clark Canyon Reservoir
nr Grant
FALLING
5,524.55
ft elevation
-0.25 ft today
Daily Change
46.9%
Capacity
↓
Trend
↓ Falling
Southwest MT trophy trout
Inflow 130 cfs • Release 555 cfs USACE →
Central Montana
Canyon Ferry Reservoir
nr Townsend
STABLE
3,790.12
ft elevation
-0.01 ft today
Daily Change
87.7%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 3,119 cfs • Release 3,282 cfs USACE →
Bighorn Lake
nr Fort Smith
RISING
3,622.96
ft elevation
+0.12 ft today
Daily Change
82.9%
Capacity
↑
Trend
↑ Rising
World-class brown trout fishery
Inflow 2,382 cfs • Release 1,922 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,992.46
ft elevation
+0.03 ft today
Daily Change
99.0%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 1,159 cfs • Release 837 cfs USACE →
Eastern Montana
Fort Peck Reservoir
nr Glasgow
STABLE
2,223.83
ft elevation
+0.05 ft today
Daily Change
86.3%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 10,000 cfs • Release 6,800 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.