Lakes / Massachusetts / Berkshire County / Upper Reservoir Bear Swamp
Upper Reservoir Bear Swamp, Massachusetts
108.23 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Massachusetts
42.68 degrees N, 72.96 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 Upper Reservoir Bear Swamp Stacks Up
- Larger than 71% of the 784 lakes counted in Massachusetts.
- About 44 miles from Springfield, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lower Reservoir Bear Swamp | Berkshire | 0.6 mi | 107.34 acres |
| Pelham Lake | Franklin | 3.8 mi | 71 acres |
| Bog Pond | Berkshire | 4.8 mi | 40.28 acres |
| South Pond | Berkshire | 5.3 mi | 25 acres |
| Mauserts Pond | Berkshire | 7.2 mi | 49 acres |
| Hallockville Pond | Hampshire | 9.2 mi | 20 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Upper Reservoir Bear Swamp
How Big Is Upper Reservoir Bear Swamp?
Upper Reservoir Bear Swamp covers 108.23 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 40652503). Verified October 30, 2026.