Lakes / Texas / San Augustine County / Sam Rayburn Reservoir
Sam Rayburn Reservoir, Texas
114,500 acres
Surface Area
80 ft
Max Depth
Where It Sits, and How Deep It Goes
Locator - Texas
31.22 degrees N, 94.25 degrees W - San Augustine 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.
Depth Profile - Sam Rayburn Reservoir
Schematic cross-section drawn to one shared depth scale - not a survey or bathymetric map.
How Sam Rayburn Reservoir Stacks Up
- Ranks #2 for surface area among the Texas lakes counted so far - 114,500 acres.
- The largest lake in San Augustine County among those counted.
- About 121 miles from Houston, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Club Lake | Angelina | 19 mi | 25.15 acres |
| Linsey Lake | Jasper | 21 mi | 31.38 acres |
| City Lake | San Augustine | 22 mi | 188.54 acres |
| Scoggins Lake | Nacogdoches | 23 mi | 33.11 acres |
| Amanda Lake | Tyler | 24 mi | 110.21 acres |
| Frog Lake | Tyler | 25 mi | 88.22 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Sam Rayburn Reservoir
How Big Is Sam Rayburn Reservoir?
Sam Rayburn Reservoir covers 114,500 acres in San Augustine County, Texas.
How Deep Is Sam Rayburn Reservoir?
Sam Rayburn Reservoir reaches 80 ft at its deepest.
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: Texas Parks & Wildlife lake data (ID 117224967). Verified October 30, 2026.