Lakes / Colorado / Garfield County / Yamcolo Reservoir
Yamcolo Reservoir, Colorado
184 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
40.05 degrees N, 107.05 degrees W - Garfield 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 Yamcolo Reservoir Stacks Up
- Larger than 79% of the 778 lakes counted in Colorado.
- About 61 miles from Aspen, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Upper Stillwater Reservoir | Garfield | 1.5 mi | 56 acres |
| Gardner Park Reservoir | Routt | 1.9 mi | 50 acres |
| Heart Lake | Rio Blanco | 3.9 mi | 28 acres |
| Stillwater Reservoir | Garfield | 4.5 mi | 129 acres |
| Keener Lake | Garfield | 5.5 mi | 29 acres |
| Sterner Reservoir | Routt | 6.3 mi | 26 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Yamcolo Reservoir
How Big Is Yamcolo Reservoir?
Yamcolo Reservoir covers 184 acres in Garfield County, Colorado.
What Is the Largest Lake in Garfield County?
Trappers Lake is the largest lake in Garfield County, at 325 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 90203137). Verified October 30, 2026.