Lakes / Colorado / Grand County / Sylvan Reservoir
Sylvan Reservoir, Colorado
54 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
39.98 degrees N, 106.12 degrees W - Grand 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 Sylvan Reservoir Stacks Up
- Larger than 47% of the 778 lakes counted in Colorado.
- About 45 miles from Boulder, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Williams Fork Reservoir | Grand | 5.2 mi | 1,549 acres |
| East Branch Reservoir | Grand | 10 mi | 62 acres |
| Windy Gap Reservoir | Grand | 11 mi | 102 acres |
| Green Mountain Reservoir | Summit | 12 mi | 2,044 acres |
| Willow Creek Reservoir | Grand | 14 mi | 292 acres |
| Lower Cataract Lake | Summit | 15 mi | 47 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Sylvan Reservoir
How Big Is Sylvan Reservoir?
Sylvan Reservoir covers 54 acres in Grand County, Colorado.
What Is the Largest Lake in Grand County?
Lake Granby is the largest lake in Grand County, at 7,075 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 88888189). Verified October 30, 2026.