Lakes / New Jersey / Essex County / Commonwealth Water Company Reservoir Number Three
Commonwealth Water Company Reservoir Number Three, New Jersey
161.61 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Jersey
40.79 degrees N, 74.36 degrees W - Essex County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Commonwealth Water Company Reservoir Number Three Stacks Up
- Larger than 84% of the 295 lakes counted in New Jersey.
- About 7 miles from Morristown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Canoe Brook Reservoir Number 1 | Essex | 2.3 mi | 204.16 acres |
| Canoe Brook Reservoir Number 2 | Essex | 2.6 mi | 76.72 acres |
| Orange Reservoir | Essex | 4.1 mi | 61.78 acres |
| Lake Parsippany | Morris | 6.1 mi | 155.92 acres |
| Boonton Reservoir | Morris | 7.2 mi | 800.95 acres |
| Mountain Lake | Morris | 8.4 mi | 74.87 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Commonwealth Water Company Reservoir Number Three
How Big Is Commonwealth Water Company Reservoir Number Three?
Commonwealth Water Company Reservoir Number Three covers 161.61 acres in Essex County, New Jersey.
What Is the Largest Lake in Essex County?
Canoe Brook Reservoir Number 1 is the largest lake in Essex County, at 204.16 acres.
Largest Lakes in New Jersey
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Hopatcong | Sussex | 2,493.66 acres | - |
| 2 | Round Valley Reservoir | Hunterdon | 2,272.23 acres | - |
| 3 | Wanaque Reservoir | Passaic | 1,971.09 acres | - |
| 4 | Van Sciver Lake | Burlington | 1,396.61 acres | - |
| 5 | Spruce Run Reservoir | Hunterdon | 1,354.88 acres | - |
All 295 New Jersey lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 60431929). Verified October 30, 2026.