Lakes / Texas / Williamson County / Site Number Eighteen
Site Number Eighteen, Williamson County, Texas
27.68 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Texas
30.57 degrees N, 97.30 degrees W - Williamson 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 Site Number Eighteen Stacks Up
- Larger than 8% of the 1,641 lakes counted in Texas.
- About 34 miles from Austin, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Site Number Four A | Williamson | 3.4 mi | 30.89 acres |
| Soil Conservation Service Site 17 Reservoir | Williamson | 5.0 mi | 36.32 acres |
| Site Number Twentytwo | Williamson | 5.3 mi | 32.37 acres |
| Soil Conservation Service Site 31 Reservoir | Williamson | 6.5 mi | 32.62 acres |
| Soil Conservation Service Site 29 Reservoir | Williamson | 8.5 mi | 32.62 acres |
| Granger Lake | Williamson | 8.9 mi | 4,400 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Site Number Eighteen
How Big Is Site Number Eighteen?
Site Number Eighteen covers 27.68 acres in Williamson County, Texas.
What Is the Largest Lake in Williamson County?
Granger Lake is the largest lake in Williamson County, at 4,400 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 96299366). Verified October 30, 2026.