Lakes / Colorado / Las Animas County / Monument Lake
Monument Lake, Las Animas County, Colorado
85 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
37.21 degrees N, 105.05 degrees W - Las Animas 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 Monument Lake Stacks Up
- Larger than 61% of the 778 lakes counted in Colorado.
- About 113 miles from Colorado Springs, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| North Lake | Las Animas | 2.1 mi | 61 acres |
| Forbes Park Lake | Costilla | 18 mi | 45 acres |
| Willow Creek Reservoir | Costilla | 18 mi | 45 acres |
| Wahatoya Lake Reservoir | Huerfano | 21 mi | 28 acres |
| Sanchez Reservoir | Costilla | 22 mi | 763 acres |
| Mountain Home Reservoir | Costilla | 22 mi | 131 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Monument Lake
How Big Is Monument Lake?
Monument Lake covers 85 acres in Las Animas County, Colorado.
What Is the Largest Lake in Las Animas County?
Trinidad Lake is the largest lake in Las Animas County, at 786 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 131292723). Verified October 30, 2026.