Lakes / Colorado / Hinsdale County / Rock Lake
Rock Lake, Colorado
29 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
37.62 degrees N, 107.48 degrees W - Hinsdale 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 Rock Lake Stacks Up
- Larger than 10% of the 778 lakes counted in Colorado.
- About 115 miles from Aspen, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Flint Lakes | Hinsdale | 1.6 mi | 33 acres |
| Ute Lake | Hinsdale | 2.7 mi | 35 acres |
| Emerald Lake | Hinsdale | 4.6 mi | 284 acres |
| Balsam Lake | San Juan | 7.3 mi | 30 acres |
| Granite Lake | Hinsdale | 7.5 mi | 29 acres |
| City Reservoir | La Plata | 8.4 mi | 40 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Rock Lake
How Big Is Rock Lake?
Rock Lake covers 29 acres in Hinsdale County, Colorado.
What Is the Largest Lake in Hinsdale County?
Rio Grande Reservoir is the largest lake in Hinsdale County, at 809 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 122807902). Verified October 30, 2026.