Lakes / Colorado / Jackson County / Walden Reservoir
Walden Reservoir, Colorado
766 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
40.74 degrees N, 106.32 degrees W - Jackson 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 Walden Reservoir Stacks Up
- Larger than 93% of the 778 lakes counted in Colorado.
- The largest lake in Jackson County among those counted.
- About 74 miles from Boulder, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Case Reservoir Number 2 | Jackson | 4.8 mi | 27 acres |
| Alkali Lake | Jackson | 6.6 mi | 139 acres |
| Cowdrey Reservoir | Jackson | 7.1 mi | 72 acres |
| East Delaney Lake | Jackson | 7.5 mi | 66 acres |
| North Delaney Lake | Jackson | 7.9 mi | 163 acres |
| South Delaney Lake | Jackson | 8.0 mi | 151 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Walden Reservoir
How Big Is Walden Reservoir?
Walden Reservoir covers 766 acres in Jackson County, Colorado.
What Is the Largest Lake in Jackson County?
Walden Reservoir is the largest lake in Jackson County, at 766 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 128867035). Verified October 30, 2026.