Lakes / Massachusetts / Essex County / Emerson Brook Reservoir
Emerson Brook Reservoir, Massachusetts
71.91 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Massachusetts
42.61 degrees N, 71.04 degrees W - Essex 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 Emerson Brook Reservoir Stacks Up
- Larger than 56% of the 784 lakes counted in Massachusetts.
- About 14 miles from Lowell, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Swan Pond | Essex | 1.2 mi | 46.86 acres |
| Middleton Pond | Essex | 1.2 mi | 137.82 acres |
| Stearns Pond | Essex | 1.6 mi | 41 acres |
| Farnums Mill Pond | Essex | 3.0 mi | 26.44 acres |
| Field Pond | Essex | 3.5 mi | 68 acres |
| Martins Pond | Middlesex | 4.4 mi | 89.7 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Emerson Brook Reservoir
How Big Is Emerson Brook Reservoir?
Emerson Brook Reservoir covers 71.91 acres in Essex County, Massachusetts.
What Is the Largest Lake in Essex County?
Lake Cochichewick is the largest lake in Essex County, at 574.77 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 135694313). Verified October 30, 2026.