Lakes / Colorado / Denver County / Marston Lake
Marston Lake, Colorado
626 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
39.63 degrees N, 105.07 degrees W - Denver 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 Marston Lake Stacks Up
- Larger than 91% of the 778 lakes counted in Colorado.
- The largest lake in Denver County among those counted.
- About 9 miles from Denver, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Bowles Reservoir Number One | Jefferson | 0.7 mi | 135 acres |
| Bowles Lake | Arapahoe | 1.2 mi | 93 acres |
| Johnson Reservoir | Jefferson | 1.9 mi | 60 acres |
| Harriman Lake | Jefferson | 2.7 mi | 47 acres |
| Ward Reservoir Number 1 | Jefferson | 3.1 mi | 59 acres |
| Cooley Lake | Arapahoe | 3.4 mi | 150 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Marston Lake
How Big Is Marston Lake?
Marston Lake covers 626 acres in Denver County, Colorado.
What Is the Largest Lake in Denver County?
Marston Lake is the largest lake in Denver County, at 626 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 117848275). Verified October 30, 2026.