Lakes / Colorado / Grand County / Williams Fork Reservoir
Williams Fork Reservoir, Colorado
1,549 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
40.01 degrees N, 106.21 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 Williams Fork Reservoir Stacks Up
- Larger than 96% of the 778 lakes counted in Colorado.
- About 50 miles from Boulder, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Sylvan Reservoir | Grand | 5.2 mi | 54 acres |
| Green Mountain Reservoir | Summit | 11 mi | 2,044 acres |
| Windy Gap Reservoir | Grand | 14 mi | 102 acres |
| Lower Cataract Lake | Summit | 14 mi | 47 acres |
| Wolford Mountain Reservoir | Grand | 14 mi | 1,283 acres |
| East Branch Reservoir | Grand | 14 mi | 62 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Williams Fork Reservoir
How Big Is Williams Fork Reservoir?
Williams Fork Reservoir covers 1,549 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 88877827). Verified October 30, 2026.