Lakes / Colorado / Jackson County / Lake Ruby
Lake Ruby, Colorado
27 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
40.41 degrees N, 106.12 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 Lake Ruby Stacks Up
- Larger than 6% of the 778 lakes counted in Colorado.
- About 53 miles from Boulder, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Little King Ranch Reservoir | Grand | 10 mi | 30 acres |
| Matheson Reservoir | Grand | 12 mi | 54 acres |
| North Michigan Creek Reservoir | Jackson | 12 mi | 37 acres |
| Mac Farlane Reservoir | Jackson | 13 mi | 257 acres |
| Meadow Creek Reservoir | Jackson | 14 mi | 206 acres |
| Seymour Lake | Jackson | 15 mi | 68 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lake Ruby
How Big Is Lake Ruby?
Lake Ruby covers 27 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 128860480). Verified October 30, 2026.