Lakes / New Jersey / Morris County / Splitrock Reservoir
Splitrock Reservoir, New Jersey
554.14 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - New Jersey
40.98 degrees N, 74.44 degrees W - Morris 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 Splitrock Reservoir Stacks Up
- Larger than 95% of the 295 lakes counted in New Jersey.
- About 13 miles from Morristown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Durham Pond | Morris | 1.1 mi | 45.96 acres |
| Stickle Pond | Morris | 1.9 mi | 128.49 acres |
| Dixons Pond | Morris | 2.8 mi | 32.12 acres |
| Deer Pond | Morris | 3.2 mi | 36.82 acres |
| Green Pond | Morris | 3.3 mi | 506.81 acres |
| Charlotteburg Reservoir | Morris | 3.3 mi | 325.98 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Splitrock Reservoir
How Big Is Splitrock Reservoir?
Splitrock Reservoir covers 554.14 acres in Morris County, New Jersey.
What Is the Largest Lake in Morris County?
Boonton Reservoir is the largest lake in Morris County, at 800.95 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 60459957). Verified October 30, 2026.