Lakes / Arizona / Pinal County / Picacho Reservoir
Picacho Reservoir, Arizona
156 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Arizona
32.85 degrees N, 111.48 degrees W - Pinal 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 Picacho Reservoir Stacks Up
- Larger than 71% of the 198 lakes counted in Arizona.
- The largest lake in Pinal County among those counted.
- About 54 miles from Tucson, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lake Saint Clair | Pinal | 29 mi | 92 acres |
| Silver Bell Tailings Pond | Pima | 32 mi | 252 acres |
| Silver Bell Tailings Pond | Pima | 32 mi | 204 acres |
| Old West Estates Retention Basin | Maricopa | 40 mi | 28 acres |
| Firebird Lake | Maricopa | 41 mi | 123 acres |
| Cottonwood Tailings Pond | Gila | 48 mi | 192 acres |
Straight-line distance between lake centers.
Facts and Figures
Waterbody ID{3D59F9A2-4F81-4A05-9E16-87DDA657CAE6}
CountyPinal
Lake TypeLake
Coordinates32.8452, -111.4802
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 {3D59F9A2-4F81-4A05-9E16-87DDA657CAE6}). Verified October 30, 2026.