Lakes / New Hampshire / Coos County / Umbagog Lake
Umbagog Lake, New Hampshire
7,642.5 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Hampshire
44.76 degrees N, 71.04 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 Umbagog Lake Stacks Up
- Ranks #2 for surface area among the New Hampshire lakes counted so far - 7,642.5 acres.
- The largest lake in Coos County among those counted.
- About 88 miles from Laconia, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Sweat Meadows | Coos | 2.6 mi | 102.8 acres |
| Round Pond Lake | Coos | 4.7 mi | 41.51 acres |
| Long Pond | Coos | 4.8 mi | 32.87 acres |
| Akers Pond | Coos | 6.3 mi | 276.26 acres |
| Greenough Pond | Coos | 6.8 mi | 234.01 acres |
| Little Greenough Pond | Coos | 7.0 mi | 41.51 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Umbagog Lake
How Big Is Umbagog Lake?
Umbagog Lake covers 7,642.5 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 118181950). Verified October 30, 2026.