Lakes / Colorado / Grand County / Dumont Lake
Dumont Lake, Colorado
43 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
40.41 degrees N, 106.63 degrees W - Grand 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 Dumont Lake Stacks Up
- Larger than 36% of the 778 lakes counted in Colorado.
- About 77 miles from Boulder, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lake Agnes | Grand | 4.1 mi | 107 acres |
| Long Lake | Routt | 5.6 mi | 34 acres |
| Fish Creek Reservoir | Routt | 7.2 mi | 76 acres |
| Whiteley Peak Reservoir | Grand | 8.0 mi | 37 acres |
| Lake Catamount | Routt | 9.9 mi | 525 acres |
| West Arapaho Reservoir | Jackson | 10 mi | 27 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Dumont Lake
How Big Is Dumont Lake?
Dumont Lake covers 43 acres in Grand County, Colorado.
What Is the Largest Lake in Grand County?
Lake Granby is the largest lake in Grand County, at 7,075 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 88876693). Verified October 30, 2026.