Lakes / New Hampshire / Coos County / Second Connecticut Lake
Second Connecticut Lake, New Hampshire
1,102.09 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Hampshire
45.15 degrees N, 71.17 degrees W - Coos County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Second Connecticut Lake Stacks Up
- Larger than 96% of the 516 lakes counted in New Hampshire.
- About 113 miles from Laconia, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| East Inlet Flowage | Coos | 2.3 mi | 91.92 acres |
| Big Brook Bog | Coos | 2.8 mi | 36.08 acres |
| Scott Bog | Coos | 4.3 mi | 88.22 acres |
| Round Pond | Coos | 5.0 mi | 59.06 acres |
| First Connecticut Lake | Coos | 5.7 mi | 3,071.1 acres |
| Third Connecticut Lake | Coos | 6.0 mi | 230.8 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Second Connecticut Lake
How Big Is Second Connecticut Lake?
Second Connecticut Lake covers 1,102.09 acres in Coos County, New Hampshire.
What Is the Largest Lake in Coos County?
Umbagog Lake is the largest lake in Coos County, at 7,642.5 acres.
Largest Lakes in New Hampshire
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Winnipesaukee | Belknap | 45,654.45 acres | - |
| 2 | Umbagog Lake | Coos | 7,642.5 acres | - |
| 3 | Squam Lake | Belknap | 6,791.2 acres | - |
| 4 | Newfound Lake | Grafton | 4,451.11 acres | - |
| 5 | Lake Winnisquam | Belknap | 4,213.89 acres | - |
All 516 New Hampshire lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 91152749). Verified October 30, 2026.