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 5 come with LakeScope PRO. Full screen
First Connecticut Lake
Coos County, New Hampshire · 3,070 acres (4.8 sq mi)
44°F water, calm this morning.
About First Connecticut Lake
First Connecticut Lake spreads over 3,070 acres in Coos County, New Hampshire. First Lake Dam holds it back on the Connecticut River. First Connecticut Lake, in far northern New Hampshire, is the uppermost headwater lake of the Connecticut River.
It stretches about 3.6 miles end to end with roughly 17.8 miles of shoreline. At about 1,630 ft above sea level, it follows the seasons of the region. It reaches about 163 ft at its deepest, with an average depth near 56 ft. Colebrook lies about 17 miles to the southwest.
- Size
- 3,070 acres (4.8 sq mi)
- Deepest
- About 163 ft (average 56 ft)
- Shoreline
- About 17.8 miles
- End to end
- About 3.6 miles
- Elevation
- About 1,630 ft
- Type
- Natural lake raised by a dam
- Dam
- First Lake Dam, Connecticut River
- County
- Coos County
The lake from above
Best fishing times
Saturday Good
- 6:00 am – 8:15 amsunrise · wind 0 mph
- 2:45 pm – 5:00 pm bestsunset, moon overhead · wind 5 mph
Sunday Fair
- 6:00 am – 8:00 amsunrise · wind 5 mph
- 3:45 pm – 5:45 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 to expect
Lakes like First Connecticut Lake in New Hampshire usually hold largemouth bass, smallmouth bass, yellow perch and trout. The state fish and wildlife agency lists what is stocked and the rules for this lake. At 44°F on the surface right now, here is how each one should behave.
- SlowLargemouth bass
Cold and sluggish. Fish slow and deep near steep banks.
- SlowSmallmouth bass
Cold. Slow presentations on deep rock.
- GoodYellow perch
Schooled near weed edges and soft bottom.
- GoodTrout
Good range. Near the surface and along shorelines.
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
5 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 6:40 am · sunset 4:17 pm · waxing crescent moon (lake time).
Towns and places to stay near First Connecticut Lake
- Colebrookabout 17 mi southwest
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Questions about First Connecticut Lake
What fish are in First Connecticut Lake?
Lakes like First Connecticut Lake usually hold largemouth bass, smallmouth bass, yellow perch and trout. Check the state fish and wildlife agency for stocking and limits.
How deep is First Connecticut Lake?
About 163 ft at the deepest point, about 56 ft on average. The 3-D view shows where the deep water is.
How big is First Connecticut Lake?
3,070 acres, with about 17.8 miles of shoreline.
What town is near First Connecticut Lake?
Colebrook is about 17 miles southwest.
What is the water temperature at First Connecticut Lake today?
The surface was about 44°F on the latest clear reading. The page updates every day.
First Connecticut Lake on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
