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
Second Connecticut Lake
Coos County, New Hampshire · 1,100 acres (1.7 sq mi)
44°F water, calm this morning.
About Second Connecticut Lake
In Coos County, New Hampshire, Second Connecticut Lake covers 1,100 acres; it is a natural lake raised by a dam. Second Lake Dam holds it back on the Connecticut River. Second Connecticut Lake lies along the remote Connecticut River headwaters in far northern New Hampshire.
It stretches about 2.4 miles end to end with roughly 8.6 miles of shoreline. The water sits about 1,860 ft above sea level. The deepest water is about 63 ft, with an average depth near 20 ft. Colebrook lies about 23 miles to the southwest.
- Size
- 1,100 acres (1.7 sq mi)
- Deepest
- About 63 ft (average 20 ft)
- Shoreline
- About 8.6 miles
- End to end
- About 2.4 miles
- Elevation
- About 1,860 ft
- Type
- Natural lake raised by a dam
- Dam
- Second 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 – 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 to expect
For a lake of this size in New Hampshire, smallmouth bass, largemouth bass, yellow perch, bluegill and sunfish and trout are the fish to expect. 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.
- SlowSmallmouth bass
Cold. Slow presentations on deep rock.
- SlowLargemouth bass
Cold and sluggish. Fish slow and deep near steep banks.
- GoodYellow perch
Schooled near weed edges and soft bottom.
- SlowBluegill and sunfish
Cold. Deep and hard to tempt. Use tiny baits.
- 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 Second Connecticut Lake
- Colebrookabout 23 mi southwest
Prices and availability come from booking partners; we may earn a commission at no cost to you.
Questions about Second Connecticut Lake
What fish are in Second Connecticut Lake?
Lakes like Second Connecticut Lake usually hold smallmouth bass, largemouth bass, yellow perch, bluegill and sunfish and trout. Check the state fish and wildlife agency for stocking and limits.
How deep is Second Connecticut Lake?
About 63 ft at the deepest point, about 20 ft on average. The 3-D view shows where the deep water is.
How big is Second Connecticut Lake?
1,100 acres, with about 8.6 miles of shoreline.
What town is near Second Connecticut Lake?
Colebrook is about 23 miles southwest.
What is the water temperature at Second Connecticut Lake today?
The surface was about 44°F on the latest clear reading. The page updates every day.
Second Connecticut Lake on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
