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 May 21, 2026 at 12:44 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
RISING
2,892.37
ft elevation
+0.34 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Largest natural freshwater lake W of Mississippi
Reading: 12:30 AM USGS →
Hebgen Lake
nr West Yellowstone
RISING
6,532.80
ft NGVD
+0.85 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
World-class fly fishing
Reading: 11:45 PM USGS →
Hungry Horse Reservoir
nr Hungry Horse
RISING FAST
3,550.50
ft NGVD
+2.01 ft / 7 days
7-Day Change
—
Water Temp
⇧
Trend
⇧ Rising fast
Trophy bull trout & kokanee
Reading: 11:45 PM USGS →
Lake Sherburne
nr Babb
RISING FAST
4,780.08
ft NGVD
+1.84 ft / 7 days
7-Day Change
—
Water Temp
⇧
Trend
⇧ Rising fast
Inside Glacier National Park
Reading: 12:00 AM USGS →
Fort Peck Reservoir
nr Glasgow
STABLE
2,222.96
ft elevation
0.00 ft today
Daily Change
—
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow — cfs • Release — cfs USACE →
Canyon Ferry Reservoir
nr Townsend
STABLE
3,787.60
ft elevation
+0.03 ft today
Daily Change
83.5%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 3,872 cfs • Release 3,393 cfs USACE →
Bighorn Lake
nr Fort Smith
RISING
3,616.12
ft elevation
+0.20 ft today
Daily Change
78.3%
Capacity
↑
Trend
↑ Rising
World-class brown trout fishery
Inflow 2,482 cfs • Release 1,841 cfs USACE →
Clark Canyon Reservoir
nr Grant
FALLING
5,529.45
ft elevation
-0.18 ft today
Daily Change
57.1%
Capacity
↓
Trend
↓ Falling
Southwest MT trophy trout
Inflow 108 cfs • Release 463 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,990.10
ft elevation
+0.09 ft today
Daily Change
94.5%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 1,358 cfs • Release 604 cfs USACE →
Northwest Montana
Flathead Lake
at Polson
RISING
2,892.37
ft elevation
+0.34 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Largest natural freshwater lake W of Mississippi
Reading: 12:30 AM USGS →
Hungry Horse Reservoir
nr Hungry Horse
RISING FAST
3,550.50
ft NGVD
+2.01 ft / 7 days
7-Day Change
—
Water Temp
⇧
Trend
⇧ Rising fast
Trophy bull trout & kokanee
Reading: 11:45 PM USGS →
Lake Sherburne
nr Babb
RISING FAST
4,780.08
ft NGVD
+1.84 ft / 7 days
7-Day Change
—
Water Temp
⇧
Trend
⇧ Rising fast
Inside Glacier National Park
Reading: 12:00 AM USGS →
Southwest Montana
Hebgen Lake
nr West Yellowstone
RISING
6,532.80
ft NGVD
+0.85 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
World-class fly fishing
Reading: 11:45 PM USGS →
Clark Canyon Reservoir
nr Grant
FALLING
5,529.45
ft elevation
-0.18 ft today
Daily Change
57.1%
Capacity
↓
Trend
↓ Falling
Southwest MT trophy trout
Inflow 108 cfs • Release 463 cfs USACE →
Central Montana
Canyon Ferry Reservoir
nr Townsend
STABLE
3,787.60
ft elevation
+0.03 ft today
Daily Change
83.5%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 3,872 cfs • Release 3,393 cfs USACE →
Bighorn Lake
nr Fort Smith
RISING
3,616.12
ft elevation
+0.20 ft today
Daily Change
78.3%
Capacity
↑
Trend
↑ Rising
World-class brown trout fishery
Inflow 2,482 cfs • Release 1,841 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,990.10
ft elevation
+0.09 ft today
Daily Change
94.5%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 1,358 cfs • Release 604 cfs USACE →
Eastern Montana
Fort Peck Reservoir
nr Glasgow
STABLE
2,222.96
ft elevation
0.00 ft today
Daily Change
—
Capacity
→
Trend
→ Stable
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.