Lakes / Colorado / Adams County / Ohio Lake Reservoir
Ohio Lake Reservoir, Colorado
30 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Colorado
39.92 degrees N, 104.98 degrees W - Adams 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 Ohio Lake Reservoir Stacks Up
- Larger than 13% of the 778 lakes counted in Colorado.
- About 12 miles from Denver, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Eastlake Reservoir Number Three | Adams | 1.4 mi | 74 acres |
| McKay Lake | Broomfield | 3.1 mi | 65 acres |
| Nissen Reservoir Number 2 | Broomfield | 4.9 mi | 29 acres |
| Smith Reservoir | Adams | 5.8 mi | 26 acres |
| Lower Church Lake | Jefferson | 5.8 mi | 35 acres |
| Lake Arbor | Jefferson | 7.1 mi | 37 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Ohio Lake Reservoir
How Big Is Ohio Lake Reservoir?
Ohio Lake Reservoir covers 30 acres in Adams County, Colorado.
What Is the Largest Lake in Adams County?
Barr Lake is the largest lake in Adams County, at 1,724 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 120653953). Verified October 30, 2026.