The lake bed in 3-D: deep basin, drop-offs and shoreline. Shape estimated, not for navigation. Spot 1 (back of a cove) is open for everyone; the other 6 come with LakeScope PRO. Full screen
Flagstaff Lake
Somerset County, Maine · 20,300 acres (31.7 sq mi)
37°F water, calm this morning.
About Flagstaff Lake
Flagstaff Lake is a reservoir in Somerset County, Maine, covering 20,300 acres. Long Falls Dam holds it back on the Dead River. Flagstaff Lake was created in 1950 when Long Falls Dam flooded the town of Flagstaff and other settlements along the Dead River.
It stretches about 14.8 miles end to end and its shoreline adds up to about 88 miles. At about 1,140 ft above sea level, it follows the seasons of the region. The deepest water is about 48 ft, with an average depth near 18 ft. Kingfield is about 12 miles south.
- Size
- 20,300 acres (31.7 sq mi)
- Deepest
- About 48 ft (average 18 ft)
- Shoreline
- About 88 miles
- End to end
- About 14.8 miles
- Elevation
- About 1,140 ft
- Type
- Reservoir
- Dam
- Long Falls Dam, Dead River
- County
- Somerset County
The lake from above
Best fishing times
Friday Good
- 6:00 am – 8:15 amsunrise
- 2:30 pm – 4:15 pm bestsunset, moon overhead · wind 5 mph
Saturday Good
- 6:00 am – 8:15 amsunrise · wind 5 mph
- 2:45 pm – 4:45 pm bestsunset, moon overhead · wind 5 mph
Based on sun and moon times and the wind forecast. A guide, not a promise. The app shows the whole week.
Fish in Flagstaff Lake
Flagstaff Lake holds trout. At 37°F on the surface right now, here is how each one should behave.
- FairTrout
Cold. Slow and near the surface on sunny days.
From today's water temperature and the season. A guide, not a promise.
Fishing spots
- 1Back of a cove
Sheltered, shallower water where baitfish gather.
- 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
Open water
Ice thickness is an estimate from air temperature, not a measurement. Check the ice yourself before going on it.
Weather and wind
Sunrise 6:36 am · sunset 4:13 pm · waxing crescent moon (lake time).
Towns and places to stay near Flagstaff Lake
- Kingfieldabout 12 mi south
- Phillipsabout 22 mi south
- Strongabout 23 mi south
- Madisonabout 27 mi southeast
Prices and availability come from booking partners; we may earn a commission at no cost to you.
Questions about Flagstaff Lake
What fish are in Flagstaff Lake?
Flagstaff Lake holds trout. Check the state fish and wildlife agency for stocking and limits.
How deep is Flagstaff Lake?
About 48 ft at the deepest point, about 18 ft on average. The 3-D view shows where the deep water is.
How big is Flagstaff Lake?
20,300 acres, with about 88 miles of shoreline.
What town is near Flagstaff Lake?
Kingfield is about 12 miles south; Phillips is about 22 miles south.
What is the water temperature at Flagstaff Lake today?
The surface was about 37°F on the latest clear reading. The page updates every day.
Flagstaff Lake on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
