Lakes / Arizona / Gila County / San Carlos Reservoir
San Carlos Reservoir, Arizona
13,059 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Arizona
33.20 degrees N, 110.42 degrees W - Gila County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How San Carlos Reservoir Stacks Up
- Ranks #3 for surface area among the Arizona lakes counted so far - 13,059 acres.
- The largest lake in Gila County among those counted.
- About 74 miles from Tucson, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Tufa Stone Tank | Gila | 13 mi | 45 acres |
| Lake Takalai | Graham | 13 mi | 194 acres |
| Solitude Tailings Pond | Gila | 27 mi | 143 acres |
| Tailings Pond Number Three | Gila | 29 mi | 546 acres |
| Phillips Park Tank | Gila | 31 mi | 32 acres |
| Cottonwood Tailings Pond | Gila | 34 mi | 192 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About San Carlos Reservoir
How Big Is San Carlos Reservoir?
San Carlos Reservoir covers 13,059 acres in Gila County, Arizona.
What Is the Largest Lake in Gila County?
San Carlos Reservoir is the largest lake in Gila County, at 13,059 acres.
Largest Lakes in Arizona
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Mohave | Mohave | 27,571 acres | - |
| 2 | Lake Havasu | Mohave | 18,560 acres | - |
| 3 | San Carlos Reservoir | Gila | 13,059 acres | - |
| 4 | Lake Pleasant | Yavapai | 9,186 acres | - |
| 5 | Theodore Roosevelt Lake | Gila | 9,075 acres | - |
All 198 Arizona lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 142953991). Verified October 30, 2026.