The lake bed in 3-D: deep basin, drop-offs and shoreline. Shape estimated, not for navigation. Spot 1 (point drop-off) is open for everyone; the other 6 come with LakeScope PRO. Full screen
Lake Koocanusa
Lincoln County, Montana · 46,500 acres (72.7 sq mi)
32°F water, ice 95% cover, calm this morning.
About Lake Koocanusa
Lake Koocanusa is a reservoir in Lincoln County, Montana, covering 46,500 acres. It was made by Libby Dam on the Kootenai River. Lake Koocanusa is a transboundary reservoir that stretches from Montana north into British Columbia, Canada.
It stretches about 70.5 miles end to end and its shoreline adds up to about 197 miles. At about 2,460 ft above sea level, it follows the seasons of the region. The deepest water is about 350 ft. Eureka is about 5.2 miles southeast.
- Size
- 46,500 acres (72.7 sq mi)
- Deepest
- About 350 ft
- Shoreline
- About 197 miles
- End to end
- About 70.5 miles
- Elevation
- About 2,460 ft
- Type
- Reservoir
- Dam
- Libby Dam, Kootenai River
- County
- Lincoln County
The lake from above
Best fishing times
Friday Good
- 7:15 am – 9:30 amsunrise · wind 0 mph
- 3:30 pm – 5:15 pm bestsunset, moon overhead · wind 0 mph
Saturday Good
- 7:15 am – 9:30 amsunrise · wind 1 mph
- 4:00 pm – 5:45 pm bestsunset, moon overhead · wind 3 mph
Based on sun and moon times and the wind forecast. A guide, not a promise. The app shows the whole week.
Fish in Lake Koocanusa
The fish here: trout, kokanee salmon, largemouth bass, northern pike and yellow perch. With the surface at 32°F, the notes below say which of them should be biting.
- FairTrout
Cold. Slow and near the surface on sunny days.
- FairKokanee salmon
Near the surface in the cool water. Troll slowly.
- SlowLargemouth bass
Cold and sluggish. Fish slow and deep near steep banks.
- FairNorthern pike
Cold. Slow baits near weed edges and drop-offs.
- FairYellow perch
Cold. Deep schools; small jigs or minnows.
From today's water temperature and the season. A guide, not a promise.
Fishing spots
- 1Point drop-off
The bottom falls away fast off this point; fish rest deep and move up the slope to feed.
- 2
- 3
- 4
- 5
- 6
- 7
6 more spots with LakeScope PRO: fish, depth band, water temperature, best time and bait for each.
Picked from the shape of the lake bed. A guide, not a promise.
Water temperature
At the surface, seen .
Water level
No daily level reading for this lake.
Ice
Frozen · About 95% ice cover
Ice thickness is an estimate from air temperature, not a measurement. Check the ice yourself before going on it.
Weather and wind
Sunrise 7:47 am · sunset 5:02 pm · waxing crescent moon (lake time).
Towns and places to stay near Lake Koocanusa
- Eurekaabout 5.2 mi southeast
- Libbyabout 11 mi southwest
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Questions about Lake Koocanusa
What fish are in Lake Koocanusa?
Lake Koocanusa holds trout, kokanee salmon, largemouth bass, northern pike and yellow perch. Check the state fish and wildlife agency for stocking and limits.
How deep is Lake Koocanusa?
About 350 ft at the deepest point. The 3-D view shows where the deep water is.
How big is Lake Koocanusa?
46,500 acres, with about 197 miles of shoreline.
What town is near Lake Koocanusa?
Eureka is about 5.2 miles southeast; Libby is about 11 miles southwest.
What is the water temperature at Lake Koocanusa today?
The surface was about 32°F on the latest clear reading. The page updates every day.
Lake Koocanusa on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
