Lakes / Colorado / Larimer County / Hourglass Reservoir
Hourglass Reservoir, Colorado
64 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
40.58 degrees N, 105.63 degrees W - Larimer 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 Hourglass Reservoir Stacks Up
- Larger than 53% of the 778 lakes counted in Colorado.
- About 43 miles from Boulder, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Comanche Reservoir | Larimer | 1.1 mi | 112 acres |
| Crystal Lake | Larimer | 7.5 mi | 25 acres |
| Peterson Lake | Larimer | 8.4 mi | 38 acres |
| Long Draw Reservoir | Larimer | 9.8 mi | 339 acres |
| Barnes Meadow Reservoir | Larimer | 11 mi | 100 acres |
| Laramie Lake | Larimer | 11 mi | 35 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Hourglass Reservoir
How Big Is Hourglass Reservoir?
Hourglass Reservoir covers 64 acres in Larimer County, Colorado.
What Is the Largest Lake in Larimer County?
Horsetooth Reservoir is the largest lake in Larimer County, at 1,817 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 128075977). Verified October 30, 2026.