Lakes / Texas / La Salle County / Big Alamo Tank
Big Alamo Tank, Texas
143.57 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Texas
28.29 degrees N, 98.83 degrees W - La Salle 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 Big Alamo Tank Stacks Up
- Larger than 73% of the 1,641 lakes counted in Texas.
- The largest lake in La Salle County among those counted.
- About 81 miles from San Antonio, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Alexander Lake Number 2 | La Salle | 1.0 mi | 42.75 acres |
| Lesterjet Tank | La Salle | 2.4 mi | 31.14 acres |
| Guadalupe Tank | McMullen | 3.0 mi | 44.73 acres |
| Welder Lake Number 1 | La Salle | 5.6 mi | 27.68 acres |
| Red Tank | La Salle | 5.9 mi | 26.99 acres |
| Welder Lake Number 5 | La Salle | 6.1 mi | 53.13 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Big Alamo Tank
How Big Is Big Alamo Tank?
Big Alamo Tank covers 143.57 acres in La Salle County, Texas.
What Is the Largest Lake in La Salle County?
Big Alamo Tank is the largest lake in La Salle County, at 143.57 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 94625310). Verified October 30, 2026.