Lakes / Colorado / Costilla County / Sanchez Reservoir
Sanchez Reservoir, Colorado
763 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
37.09 degrees N, 105.41 degrees W - Costilla 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 Sanchez Reservoir Stacks Up
- Larger than 93% of the 778 lakes counted in Colorado.
- The largest lake in Costilla County among those counted.
- About 125 miles from Colorado Springs, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Stabilization Reservoir | Costilla | 7.8 mi | 41 acres |
| Eastdale Reservoir Number 1 | Costilla | 11 mi | 151 acres |
| Willow Creek Reservoir | Costilla | 12 mi | 45 acres |
| Mountain Home Reservoir | Costilla | 21 mi | 131 acres |
| Smith Reservoir | Costilla | 22 mi | 674 acres |
| Monument Lake | Las Animas | 22 mi | 85 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Sanchez Reservoir
How Big Is Sanchez Reservoir?
Sanchez Reservoir covers 763 acres in Costilla County, Colorado.
What Is the Largest Lake in Costilla County?
Sanchez Reservoir is the largest lake in Costilla County, at 763 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 136497714). Verified October 30, 2026.