Lakes / Ohio / C.J. Brown Reservoir
C.J. Brown Reservoir, Ohio
1,969 acres
Surface Area
35 ft
Max Depth
14.01 mi
Shoreline
1,009 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Ohio
39.97 degrees N, 83.73 degrees W - Clark County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Ohio DNR coordinates, not by eye. Schematic - not a survey map.
Depth Profile - C.J. Brown Reservoir
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How C.J. Brown Reservoir Stacks Up
- The largest lake in Clark County among those counted.
- About 39 miles from Columbus, as the crow flies.
Facts and Figures
Waterbody IDoh-c-j-brown-reservoir-39023
CountyClark
Shoreline14.01 mi
Coordinates39.9677, -83.7311
Deepest Natural Lakes in Ohio
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | McKarns Lake | Williams | 40 acres | 75 ft |
| 2 | Portage Lakes | Summit | 474 acres | 60 ft |
| 3 | Punderson Lake | Geauga | 80 acres | 55 ft |
| 4 | Wolf Run Lake | Noble | 208 acres | 51 ft |
| 5 | Barton Lake | Williams | 19 acres | 42 ft |
Largest Lakes in Ohio
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Grand Lake St. Marys | Mercer | 13,356 acres | 14 ft |
| 2 | Mosquito Creek Lake | Trumbull | 7,212 acres | 24 ft |
| 3 | Indian Lake | Logan | 5,161 acres | 12 ft |
| 4 | Seneca Lake | Noble | 3,550 acres | 21 ft |
| 5 | Berlin Lake | Portage | 3,344 acres | 60 ft |
Sources: Ohio Department of Natural Resources lake data (ID oh-c-j-brown-reservoir-39023); USGS. Verified October 28, 2026.