Lakes / Massachusetts / Plymouth County / Weweantic River Reservoir
Weweantic River Reservoir, Massachusetts
37.31 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Massachusetts
41.82 degrees N, 70.75 degrees W - Plymouth 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 Weweantic River Reservoir Stacks Up
- Larger than 27% of the 784 lakes counted in Massachusetts.
- About 41 miles from Boston, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Smalley Bogs | Plymouth | 1.7 mi | 28.66 acres |
| Sampson Pond | Plymouth | 2.2 mi | 302 acres |
| Crane Brook Bog Pond | Plymouth | 2.7 mi | 40.03 acres |
| Tihonet Pond | Plymouth | 2.7 mi | 86.73 acres |
| Parker Mills Pond | Plymouth | 3.5 mi | 73.14 acres |
| Dunham Pond | Plymouth | 3.5 mi | 42.75 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Weweantic River Reservoir
How Big Is Weweantic River Reservoir?
Weweantic River Reservoir covers 37.31 acres in Plymouth County, Massachusetts.
What Is the Largest Lake in Plymouth County?
Assawompset Pond is the largest lake in Plymouth County, at 2,652.37 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 136688270). Verified October 30, 2026.