Lakes / Colorado / Huerfano County / Castle Rock Reservoir
Castle Rock Reservoir, Colorado
43 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
37.59 degrees N, 104.76 degrees W - Huerfano 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 Castle Rock Reservoir Stacks Up
- Larger than 37% of the 778 lakes counted in Colorado.
- About 86 miles from Colorado Springs, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Farr Lake | Huerfano | 2.4 mi | 43 acres |
| Martin Lake Reservoir | Huerfano | 4.3 mi | 183 acres |
| Holita Reservoir | Huerfano | 4.6 mi | 63 acres |
| Horseshoe Lake Reservoir | Huerfano | 4.9 mi | 164 acres |
| Walsenburg Reservoir | Huerfano | 5.4 mi | 44 acres |
| Saliba Lake | Huerfano | 5.6 mi | 145 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Castle Rock Reservoir
How Big Is Castle Rock Reservoir?
Castle Rock Reservoir covers 43 acres in Huerfano County, Colorado.
What Is the Largest Lake in Huerfano County?
Maria Reservoir is the largest lake in Huerfano County, at 190 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 129970060). Verified October 30, 2026.