Lakes / Texas / Calhoun County / Operating Basin Number 1
Operating Basin Number 1, Texas
46.21 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Texas
28.50 degrees N, 96.77 degrees W - Calhoun 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 Operating Basin Number 1 Stacks Up
- Larger than 43% of the 1,641 lakes counted in Texas.
- About 121 miles from Houston, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Operating Basin Number 5 | Calhoun | 0.8 mi | 492.23 acres |
| Operating Basin Number 31 | Calhoun | 1.3 mi | 117.38 acres |
| Goff Bayou | Calhoun | 2.6 mi | 80.31 acres |
| Buffalo Lake | Calhoun | 3.3 mi | 116.63 acres |
| Alligator Slide Lake | Calhoun | 3.3 mi | 183.6 acres |
| Green Lake | Calhoun | 4.5 mi | 6,050.13 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Operating Basin Number 1
How Big Is Operating Basin Number 1?
Operating Basin Number 1 covers 46.21 acres in Calhoun County, Texas.
What Is the Largest Lake in Calhoun County?
Green Lake is the largest lake in Calhoun County, at 6,050.13 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 128266029). Verified October 30, 2026.