Lakes / Colorado / Jackson County / Seymour Lake
Seymour Lake, Colorado
68 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
40.48 degrees N, 106.39 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 Seymour Lake Stacks Up
- Larger than 55% of the 778 lakes counted in Colorado.
- About 67 miles from Boulder, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| West Arapaho Reservoir | Jackson | 4.1 mi | 27 acres |
| Mac Farlane Reservoir | Jackson | 7.1 mi | 257 acres |
| Pole Mountain Lake | Jackson | 7.4 mi | 98 acres |
| Whiteley Peak Reservoir | Grand | 12 mi | 37 acres |
| Case Reservoir Number 2 | Jackson | 13 mi | 27 acres |
| Matheson Reservoir | Grand | 14 mi | 54 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Seymour Lake
How Big Is Seymour Lake?
Seymour Lake covers 68 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 128866833). Verified October 30, 2026.