Lakes / Texas / Cameron County / Reservoir Number One
Reservoir Number One, Cameron County, Texas
537.25 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Texas
26.06 degrees N, 97.73 degrees W - Cameron 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 Reservoir Number One Stacks Up
- Larger than 87% of the 1,641 lakes counted in Texas.
- About 237 miles from San Antonio, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Reservoir Number Two | Cameron | 0.9 mi | 332.69 acres |
| Cameron County District Number One Reservoir | Cameron | 2.5 mi | 164.33 acres |
| Adams Winter Garden Reservoir | Cameron | 4.8 mi | 403.28 acres |
| Roos Reservoir | Cameron | 6.8 mi | 28.42 acres |
| City of Harlingen Reservoir | Cameron | 7.5 mi | 59.55 acres |
| Reba Bass Lake | Cameron | 8.5 mi | 35.58 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Reservoir Number One
How Big Is Reservoir Number One?
Reservoir Number One covers 537.25 acres in Cameron County, Texas.
What Is the Largest Lake in Cameron County?
Laguna Atascosa is the largest lake in Cameron County, at 3,530.39 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 113375934). Verified October 30, 2026.