Lakes / Massachusetts / Berkshire County / Thousand Acre Swamp Reservoir
Thousand Acre Swamp Reservoir, Massachusetts
144.8 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Massachusetts
42.07 degrees N, 73.21 degrees W - Berkshire County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Massachusetts Division of Fisheries and Wildlife coordinates, not by eye. Schematic - not a survey map.
How Thousand Acre Swamp Reservoir Stacks Up
- Larger than 79% of the 784 lakes counted in Massachusetts.
- About 32 miles from Springfield, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| East Indies Pond | Berkshire | 0.8 mi | 72.15 acres |
| Windemere Lake Reservoir | Berkshire | 1.0 mi | 84.02 acres |
| York Lake | Berkshire | 2.3 mi | 30 acres |
| Atwater Pond | Berkshire | 3.8 mi | 28.91 acres |
| Harnett Pond | Berkshire | 4.1 mi | 32.37 acres |
| West Lake | Berkshire | 4.8 mi | 60 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Thousand Acre Swamp Reservoir
How Big Is Thousand Acre Swamp Reservoir?
Thousand Acre Swamp Reservoir covers 144.8 acres in Berkshire County, Massachusetts.
What Is the Largest Lake in Berkshire County?
Onota Lake is the largest lake in Berkshire County, at 653 acres.
Deepest Natural Lakes in Massachusetts
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Walden Pond | Middlesex | 62 acres | 100 ft |
| 2 | Cliff Pond | Barnstable | 206 acres | 96 ft |
| 3 | Wallum Lake | Worcester | 322 acres | 81 ft |
| 4 | Onota Lake | Berkshire | 653 acres | 72 ft |
| 5 | Ashumet Pond | Barnstable | 220 acres | 69 ft |
All 211 Massachusetts lakes ranked by depth
Largest Lakes in Massachusetts
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Quabbin Reservoir | Franklin | 24,012 acres | - |
| 2 | Wachusett Reservoir | Worcester | 4,041 acres | - |
| 3 | Assawompset Pond | Plymouth | 2,652.37 acres | - |
| 4 | Watuppa Pond | Bristol | 1,758.37 acres | - |
| 5 | South Watuppa Pond | Bristol | 1,460 acres | 23 ft |
All 784 Massachusetts lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 122986043). Verified October 30, 2026.