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 Apr 29, 2026 at 1:59 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
RISING
2,890.43
ft elevation
+1.08 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Largest natural freshwater lake W of Mississippi
Reading: 1:30 PM USGS →
Hebgen Lake
nr West Yellowstone
RISING
6,530.75
ft NGVD
+0.44 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
World-class fly fishing
Reading: 1:45 PM USGS →
Hungry Horse Reservoir
nr Hungry Horse
STABLE
3,544.88
ft NGVD
+0.22 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Trophy bull trout & kokanee
Reading: 12:45 PM USGS →
Lake Sherburne
nr Babb
FALLING FAST
4,778.38
ft NGVD
-3.38 ft / 7 days
7-Day Change
—
Water Temp
⇩
Trend
⇩ Falling fast
Inside Glacier National Park
Reading: 1:00 PM USGS →
Fort Peck Reservoir
nr Glasgow
STABLE
2,222.85
ft elevation
+0.04 ft today
Daily Change
85.1%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 7,000 cfs • Release 4,800 cfs USACE →
Canyon Ferry Reservoir
nr Townsend
STABLE
3,786.85
ft elevation
+0.08 ft today
Daily Change
82.3%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 4,353 cfs • Release 3,100 cfs USACE →
Bighorn Lake
nr Fort Smith
RISING
3,614.90
ft elevation
+0.19 ft today
Daily Change
77.5%
Capacity
↑
Trend
↑ Rising
World-class brown trout fishery
Inflow 2,243 cfs • Release 1,665 cfs USACE →
Clark Canyon Reservoir
nr Grant
STABLE
5,532.09
ft elevation
+0.03 ft today
Daily Change
63.1%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 97 cfs • Release 36 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,988.07
ft elevation
+0.08 ft today
Daily Change
90.8%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 1,205 cfs • Release 509 cfs USACE →
Northwest Montana
Flathead Lake
at Polson
RISING
2,890.43
ft elevation
+1.08 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Largest natural freshwater lake W of Mississippi
Reading: 1:30 PM USGS →
Hungry Horse Reservoir
nr Hungry Horse
STABLE
3,544.88
ft NGVD
+0.22 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
Trophy bull trout & kokanee
Reading: 12:45 PM USGS →
Lake Sherburne
nr Babb
FALLING FAST
4,778.38
ft NGVD
-3.38 ft / 7 days
7-Day Change
—
Water Temp
⇩
Trend
⇩ Falling fast
Inside Glacier National Park
Reading: 1:00 PM USGS →
Southwest Montana
Hebgen Lake
nr West Yellowstone
RISING
6,530.75
ft NGVD
+0.44 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
World-class fly fishing
Reading: 1:45 PM USGS →
Clark Canyon Reservoir
nr Grant
STABLE
5,532.09
ft elevation
+0.03 ft today
Daily Change
63.1%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 97 cfs • Release 36 cfs USACE →
Central Montana
Canyon Ferry Reservoir
nr Townsend
STABLE
3,786.85
ft elevation
+0.08 ft today
Daily Change
82.3%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 4,353 cfs • Release 3,100 cfs USACE →
Bighorn Lake
nr Fort Smith
RISING
3,614.90
ft elevation
+0.19 ft today
Daily Change
77.5%
Capacity
↑
Trend
↑ Rising
World-class brown trout fishery
Inflow 2,243 cfs • Release 1,665 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,988.07
ft elevation
+0.08 ft today
Daily Change
90.8%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 1,205 cfs • Release 509 cfs USACE →
Eastern Montana
Fort Peck Reservoir
nr Glasgow
STABLE
2,222.85
ft elevation
+0.04 ft today
Daily Change
85.1%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 7,000 cfs • Release 4,800 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.