Lakes / Colorado / Rio Blanco County / Big Beaver Reservoir
Big Beaver Reservoir, Colorado
205 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
39.98 degrees N, 107.65 degrees W - Rio Blanco 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 Big Beaver Reservoir Stacks Up
- Larger than 81% of the 778 lakes counted in Colorado.
- The largest lake in Rio Blanco County among those counted.
- About 70 miles from Aspen, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Meadow Creek Lake | Garfield | 13 mi | 59 acres |
| D D and E Wise Reservoir | Rio Blanco | 14 mi | 50 acres |
| Marvine Lakes | Rio Blanco | 14 mi | 66 acres |
| Marvine Lakes | Rio Blanco | 15 mi | 76 acres |
| Blair Lake | Garfield | 17 mi | 28 acres |
| Twin Lakes | Garfield | 19 mi | 50 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Big Beaver Reservoir
How Big Is Big Beaver Reservoir?
Big Beaver Reservoir covers 205 acres in Rio Blanco County, Colorado.
What Is the Largest Lake in Rio Blanco County?
Big Beaver Reservoir is the largest lake in Rio Blanco County, at 205 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 90407927). Verified October 30, 2026.