Lakes / Colorado / La Plata County / Vallecito Reservoir
Vallecito Reservoir, Colorado
2,603 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
37.40 degrees N, 107.55 degrees W - La Plata 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 Vallecito Reservoir Stacks Up
- Larger than 98% of the 778 lakes counted in Colorado.
- The largest lake in La Plata County among those counted.
- About 127 miles from Grand Junction, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lemon Reservoir | La Plata | 6.1 mi | 505 acres |
| City Reservoir | La Plata | 10.0 mi | 40 acres |
| Emerald Lake | Hinsdale | 12 mi | 284 acres |
| Shalona Lake | La Plata | 15 mi | 26 acres |
| Rock Lake | Hinsdale | 15 mi | 29 acres |
| Flint Lakes | Hinsdale | 16 mi | 33 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Vallecito Reservoir
How Big Is Vallecito Reservoir?
Vallecito Reservoir covers 2,603 acres in La Plata County, Colorado.
What Is the Largest Lake in La Plata County?
Vallecito Reservoir is the largest lake in La Plata County, at 2,603 acres.
Largest Lakes in Colorado
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | John Martin Reservoir | Bent | 11,686 acres | - |
| 2 | Blue Mesa Reservoir | Gunnison | 8,944 acres | - |
| 3 | Lake Granby | Grand | 7,075 acres | - |
| 4 | Lake Meredith | Crowley | 5,539 acres | - |
| 5 | Adobe Creek Reservoir | Bent | 4,770 acres | - |
All 778 Colorado 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 122808154). Verified October 30, 2026.