Lakes / Connecticut / Middlesex County / Lake Hammonasset
Lake Hammonasset, Connecticut
243.42 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Connecticut
41.37 degrees N, 72.61 degrees W - Middlesex 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 Lake Hammonasset Stacks Up
- Larger than 87% of the 363 lakes counted in Connecticut.
- About 17 miles from New Haven, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Foster Pond | Middlesex | 1.7 mi | 36.62 acres |
| Deer Lake | Middlesex | 2.1 mi | 36.22 acres |
| Killingworth Reservoir | Middlesex | 4.0 mi | 80.06 acres |
| Hidden Lake | Middlesex | 4.1 mi | 37.81 acres |
| Quonnipaug Lake | New Haven | 4.6 mi | 96.12 acres |
| Pattaconk Reservoir | Middlesex | 5.2 mi | 50.82 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lake Hammonasset
How Big Is Lake Hammonasset?
Lake Hammonasset covers 243.42 acres in Middlesex County, Connecticut.
What Is the Largest Lake in Middlesex County?
Pocotopaug Lake is the largest lake in Middlesex County, at 511.28 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 122189427). Verified October 30, 2026.