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 Jul 5, 2026 at 4:59 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
2,893.11
ft elevation
+0.10 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
STABLE
6,534.65
ft NGVD
No change
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 4:45 AM USGS →
Hungry Horse Reservoir
nr Hungry Horse
FALLING
3,559.00
ft NGVD
-0.53 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Trophy bull trout & kokanee
Reading: 3:45 AM USGS →
Lake Sherburne
nr Babb
FALLING
4,786.93
ft NGVD
-0.61 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Inside Glacier National Park
Reading: 4:00 AM USGS →
Fort Peck Reservoir
nr Glasgow
STABLE
2,223.96
ft elevation
+0.05 ft today
Daily Change
—
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow — cfs • Release — cfs USACE →
Canyon Ferry Reservoir
nr Townsend
RISING
3,790.83
ft elevation
+0.19 ft today
Daily Change
89.0%
Capacity
↑
Trend
↑ Rising
Missouri River — rainbow & brown trout
Inflow 5,970 cfs • Release 3,217 cfs USACE →
Bighorn Lake
nr Fort Smith
STABLE
3,624.76
ft elevation
+0.07 ft today
Daily Change
84.2%
Capacity
→
Trend
→ Stable
World-class brown trout fishery
Inflow 2,239 cfs • Release 1,926 cfs USACE →
Clark Canyon Reservoir
nr Grant
STABLE
5,522.42
ft elevation
+0.04 ft today
Daily Change
42.9%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 166 cfs • Release 101 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,993.67
ft elevation
+0.01 ft today
Daily Change
100.0%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 1,528 cfs • Release 1,549 cfs USACE →
Northwest Montana
Flathead Lake
at Polson
STABLE
2,893.11
ft elevation
+0.10 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
3,559.00
ft NGVD
-0.53 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Trophy bull trout & kokanee
Reading: 3:45 AM USGS →
Lake Sherburne
nr Babb
FALLING
4,786.93
ft NGVD
-0.61 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Inside Glacier National Park
Reading: 4:00 AM USGS →
Southwest Montana
Hebgen Lake
nr West Yellowstone
STABLE
6,534.65
ft NGVD
No change
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 4:45 AM USGS →
Clark Canyon Reservoir
nr Grant
STABLE
5,522.42
ft elevation
+0.04 ft today
Daily Change
42.9%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 166 cfs • Release 101 cfs USACE →
Central Montana
Canyon Ferry Reservoir
nr Townsend
RISING
3,790.83
ft elevation
+0.19 ft today
Daily Change
89.0%
Capacity
↑
Trend
↑ Rising
Missouri River — rainbow & brown trout
Inflow 5,970 cfs • Release 3,217 cfs USACE →
Bighorn Lake
nr Fort Smith
STABLE
3,624.76
ft elevation
+0.07 ft today
Daily Change
84.2%
Capacity
→
Trend
→ Stable
World-class brown trout fishery
Inflow 2,239 cfs • Release 1,926 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,993.67
ft elevation
+0.01 ft today
Daily Change
100.0%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 1,528 cfs • Release 1,549 cfs USACE →
Eastern Montana
Fort Peck Reservoir
nr Glasgow
STABLE
2,223.96
ft elevation
+0.05 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.