Lakes / Colorado / Mineral County / Santa Maria Reservoir
Santa Maria Reservoir, Colorado
535 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
37.79 degrees N, 107.09 degrees W - Mineral 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 Santa Maria Reservoir Stacks Up
- Larger than 90% of the 778 lakes counted in Colorado.
- The largest lake in Mineral County among those counted.
- About 98 miles from Aspen, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Road Canyon Reservoir Number 1 | Hinsdale | 5.6 mi | 153 acres |
| Troutvale Reservoir Number 1 | Hinsdale | 5.9 mi | 62 acres |
| Troutvale Reservoir Number 2 | Hinsdale | 6.2 mi | 97 acres |
| Meadow Lake Reservoir | Mineral | 6.5 mi | 27 acres |
| Big Ruby Reservoir | Mineral | 7.0 mi | 30 acres |
| South Lazy U Reservoir Number 2 | Hinsdale | 7.4 mi | 28 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Santa Maria Reservoir
How Big Is Santa Maria Reservoir?
Santa Maria Reservoir covers 535 acres in Mineral County, Colorado.
What Is the Largest Lake in Mineral County?
Santa Maria Reservoir is the largest lake in Mineral County, at 535 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 136353624). Verified October 30, 2026.