Lakes / Colorado / Delta County / Donnely Reservoir
Donnely Reservoir, Colorado
25 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
39.04 degrees N, 107.94 degrees W - Delta 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 Donnely Reservoir Stacks Up
- Larger than 1% of the 778 lakes counted in Colorado.
- About 33 miles from Grand Junction, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Eggleston Lake | Mesa | 0.6 mi | 130 acres |
| Baron Lake | Mesa | 0.9 mi | 69 acres |
| Kennicott Slough Reservoir | Delta | 1.1 mi | 71 acres |
| Upper Eggleston Lake | Mesa | 1.4 mi | 29 acres |
| Upper Hotel Lake | Mesa | 1.4 mi | 26 acres |
| Alexander Lake | Mesa | 1.5 mi | 30 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Donnely Reservoir
How Big Is Donnely Reservoir?
Donnely Reservoir covers 25 acres in Delta County, Colorado.
What Is the Largest Lake in Delta County?
Crawford Reservoir is the largest lake in Delta County, at 376 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 75556913). Verified October 30, 2026.