Lakes / Texas / Oldham County / Rock Lake
Rock Lake, Texas
216.46 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Texas
35.26 degrees N, 102.69 degrees W - Oldham County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Texas Parks and Wildlife Department coordinates, not by eye. Schematic - not a survey map.
How Rock Lake Stacks Up
- Larger than 80% of the 1,641 lakes counted in Texas.
- The largest lake in Oldham County among those counted.
- About 352 miles from Fort Worth, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Randall Lake | Oldham | 3.4 mi | 156.66 acres |
| Gist Lake | Oldham | 5.8 mi | 213.99 acres |
| Hay Lake | Deaf Smith | 8.5 mi | 249.93 acres |
| Norton Lake | Deaf Smith | 12 mi | 69.93 acres |
| Overstreet Lake | Deaf Smith | 13 mi | 66.22 acres |
| Red Windmill Lake | Deaf Smith | 14 mi | 79.57 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Rock Lake
How Big Is Rock Lake?
Rock Lake covers 216.46 acres in Oldham County, Texas.
What Is the Largest Lake in Oldham County?
Rock Lake is the largest lake in Oldham County, at 216.46 acres.
Deepest Natural Lakes in Texas
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Amistad Reservoir | Val Verde | 64,900 acres | 217 ft |
| 2 | Comanche Creek Reservoir | Pecos | 3,272 acres | 125 ft |
| 3 | Belton Lake | Bell | 12,385 acres | 124 ft |
| 4 | O. H. Ivie Reservoir | Concho | 19,149 acres | 119 ft |
| 5 | Stillhouse Hollow Lake | Bell | 6,429 acres | 107 ft |
All 107 Texas lakes ranked by depth
Largest Lakes in Texas
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Toledo Bend Reservoir | Sabine | 181,600 acres | 110 ft |
| 2 | Sam Rayburn Reservoir | San Augustine | 114,500 acres | 80 ft |
| 3 | Lake Livingston | San Jacinto | 90,000 acres | 77 ft |
| 4 | Falcon Reservoir | Zapata | 80,555.4 acres | - |
| 5 | Amistad Reservoir | Val Verde | 64,900 acres | 217 ft |
All 1,641 Texas lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 138454106). Verified October 30, 2026.