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 Mar 12, 2026 at 1:14 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
FALLING
2,886.89
ft elevation
-0.83 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Largest natural freshwater lake W of Mississippi
Reading: 12:30 PM USGS →
Hebgen Lake
nr West Yellowstone
STABLE
6,528.80
ft NGVD
-0.08 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
3,538.98
ft NGVD
+0.58 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Trophy bull trout & kokanee
Reading: 12:45 PM USGS →
Lake Sherburne
nr Babb
RISING
4,780.21
ft NGVD
+0.83 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Inside Glacier National Park
Reading: 12:00 PM USGS →
Fort Peck Reservoir
nr Glasgow
STABLE
2,222.25
ft elevation
-0.03 ft today
Daily Change
84.4%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 5,000 cfs • Release 4,800 cfs USACE →
Canyon Ferry Reservoir
nr Townsend
STABLE
3,783.29
ft elevation
-0.03 ft today
Daily Change
76.5%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 2,530 cfs • Release 2,987 cfs USACE →
Bighorn Lake
nr Fort Smith
STABLE
3,618.06
ft elevation
-0.09 ft today
Daily Change
79.5%
Capacity
→
Trend
→ Stable
World-class brown trout fishery
Inflow — cfs • Release — cfs USACE →
Clark Canyon Reservoir
nr Grant
STABLE
5,530.74
ft elevation
+0.07 ft today
Daily Change
60.0%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 175 cfs • Release 35 cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,984.11
ft elevation
+0.04 ft today
Daily Change
83.8%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 672 cfs • Release 329 cfs USACE →
Northwest Montana
Flathead Lake
at Polson
FALLING
2,886.89
ft elevation
-0.83 ft / 7 days
7-Day Change
—
Water Temp
↓
Trend
↓ Falling
Largest natural freshwater lake W of Mississippi
Reading: 12:30 PM USGS →
Hungry Horse Reservoir
nr Hungry Horse
RISING
3,538.98
ft NGVD
+0.58 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Trophy bull trout & kokanee
Reading: 12:45 PM USGS →
Lake Sherburne
nr Babb
RISING
4,780.21
ft NGVD
+0.83 ft / 7 days
7-Day Change
—
Water Temp
↑
Trend
↑ Rising
Inside Glacier National Park
Reading: 12:00 PM USGS →
Southwest Montana
Hebgen Lake
nr West Yellowstone
STABLE
6,528.80
ft NGVD
-0.08 ft / 7 days
7-Day Change
—
Water Temp
→
Trend
→ Stable
World-class fly fishing
Reading: 12:45 PM USGS →
Clark Canyon Reservoir
nr Grant
STABLE
5,530.74
ft elevation
+0.07 ft today
Daily Change
60.0%
Capacity
→
Trend
→ Stable
Southwest MT trophy trout
Inflow 175 cfs • Release 35 cfs USACE →
Central Montana
Canyon Ferry Reservoir
nr Townsend
STABLE
3,783.29
ft elevation
-0.03 ft today
Daily Change
76.5%
Capacity
→
Trend
→ Stable
Missouri River — rainbow & brown trout
Inflow 2,530 cfs • Release 2,987 cfs USACE →
Bighorn Lake
nr Fort Smith
STABLE
3,618.06
ft elevation
-0.09 ft today
Daily Change
79.5%
Capacity
→
Trend
→ Stable
World-class brown trout fishery
Inflow — cfs • Release — cfs USACE →
Lake Elwell (Tiber)
nr Chester
STABLE
2,984.11
ft elevation
+0.04 ft today
Daily Change
83.8%
Capacity
→
Trend
→ Stable
Walleye & perch fishing
Inflow 672 cfs • Release 329 cfs USACE →
Eastern Montana
Fort Peck Reservoir
nr Glasgow
STABLE
2,222.25
ft elevation
-0.03 ft today
Daily Change
84.4%
Capacity
→
Trend
→ Stable
Walleye capital of Montana
Inflow 5,000 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.