Lakes / Connecticut / New London County / Groton Reservoir
Groton Reservoir, Connecticut
214.36 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Connecticut
41.36 degrees N, 72.04 degrees W - New London 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 Groton Reservoir Stacks Up
- Larger than 87% of the 363 lakes counted in Connecticut.
- About 43 miles from Hartford, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Smith Lake | New London | 0.5 mi | 60.52 acres |
| Pohegnut Reservoir | New London | 0.6 mi | 71.73 acres |
| Ledyard Reservoir | New London | 2.9 mi | 104.02 acres |
| Morgan Pond Reservoir | New London | 4.0 mi | 154.15 acres |
| Smith Cove | New London | 4.4 mi | 54.12 acres |
| Brandegee Lake | New London | 4.4 mi | 27.16 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Groton Reservoir
How Big Is Groton Reservoir?
Groton Reservoir covers 214.36 acres in New London County, Connecticut.
What Is the Largest Lake in New London County?
Pachaug Pond is the largest lake in New London County, at 817.46 acres.
Largest Lakes in Connecticut
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Candlewood | Fairfield | 5,127.26 acres | - |
| 2 | Barkhamsted Reservoir | Litchfield | 2,231.71 acres | - |
| 3 | Lake Lillinonah | Litchfield | 1,531.02 acres | - |
| 4 | Lake Gaillard | New Haven | 1,090.97 acres | - |
| 5 | Bantam Lake | Litchfield | 953.89 acres | - |
All 363 Connecticut lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 121940141). Verified October 30, 2026.