Lakes / Connecticut / Middlesex County / Killingworth Reservoir
Killingworth Reservoir, Connecticut
80.06 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Connecticut
41.37 degrees N, 72.54 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 Killingworth Reservoir Stacks Up
- Larger than 60% of the 363 lakes counted in Connecticut.
- About 21 miles from New Haven, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Tower Hill Lake | Middlesex | 1.5 mi | 28.33 acres |
| Foster Pond | Middlesex | 2.6 mi | 36.62 acres |
| Messerschmidt Pond | Middlesex | 3.0 mi | 79.18 acres |
| Cedar Lake | Middlesex | 3.1 mi | 72.01 acres |
| Deer Lake | Middlesex | 3.1 mi | 36.22 acres |
| Pattaconk Reservoir | Middlesex | 3.2 mi | 50.82 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Killingworth Reservoir
How Big Is Killingworth Reservoir?
Killingworth Reservoir covers 80.06 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 122164742). Verified October 30, 2026.