Lakes / Massachusetts / Worcester County / Number Five Reservoir
Number Five Reservoir, Massachusetts
31.32 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Massachusetts
42.04 degrees N, 72.08 degrees W - Worcester 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 Number Five Reservoir Stacks Up
- Larger than 17% of the 784 lakes counted in Massachusetts.
- About 21 miles from Worcester, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Number Four Reservoir | Worcester | 0.5 mi | 67.24 acres |
| Cohasse Brook Reservoir | Worcester | 1.5 mi | 57.03 acres |
| Hamant Brook Reservoir | Worcester | 1.8 mi | 34.1 acres |
| Leadmine Pond | Worcester | 2.7 mi | 60 acres |
| Westville Lake | Worcester | 2.7 mi | 25.81 acres |
| Morse Pond | Worcester | 3.6 mi | 41.51 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Number Five Reservoir
How Big Is Number Five Reservoir?
Number Five Reservoir covers 31.32 acres in Worcester County, Massachusetts.
What Is the Largest Lake in Worcester County?
Wachusett Reservoir is the largest lake in Worcester County, at 4,041 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 122374064). Verified October 30, 2026.