Lakes / Colorado / Larimer County / Box I Reservoir Number 1
Box I Reservoir Number 1, Colorado
26 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
40.80 degrees N, 105.07 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 Box I Reservoir Number 1 Stacks Up
- Larger than 4% of the 778 lakes counted in Colorado.
- About 55 miles from Boulder, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Boxelder Reservoir Number 1 | Larimer | 0.6 mi | 26 acres |
| North Poudre Reservoir Number 15 | Larimer | 3.0 mi | 293 acres |
| Wasson Reservoir | Larimer | 3.1 mi | 27 acres |
| North Poudre Reservoir Number 3 | Larimer | 4.4 mi | 154 acres |
| Dry Creek Reservoir | Larimer | 4.8 mi | 33 acres |
| Boxelder Reservoir Number Three | Larimer | 4.9 mi | 49 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Box I Reservoir Number 1
How Big Is Box I Reservoir Number 1?
Box I Reservoir Number 1 covers 26 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 128075454). Verified October 30, 2026.