Lakes / Nebraska / Lancaster County / Upper Big Nemaha Reservoir 15-D
Upper Big Nemaha Reservoir 15-D, Nebraska
27 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Nebraska
40.56 degrees N, 96.73 degrees W - Lancaster 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 Upper Big Nemaha Reservoir 15-D Stacks Up
- Larger than 4% of the 660 lakes counted in Nebraska.
- About 18 miles from Lincoln, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Stagecoach Lake | Lancaster | 5.6 mi | 172 acres |
| Olive Creek Lake | Lancaster | 6.3 mi | 128 acres |
| Bluestem Lake | Lancaster | 6.4 mi | 256 acres |
| Salt Creek Reservoir 17-A | Lancaster | 6.5 mi | 25 acres |
| Salt Creek Reservoir 25-A | Lancaster | 7.4 mi | 37 acres |
| Clatonia Creek Reservoir 3-A | Gage | 8.5 mi | 40 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Upper Big Nemaha Reservoir 15-D
How Big Is Upper Big Nemaha Reservoir 15-D?
Upper Big Nemaha Reservoir 15-D covers 27 acres in Lancaster County, Nebraska.
What Is the Largest Lake in Lancaster County?
Branched Oak Lake is the largest lake in Lancaster County, at 1,757 acres.
Largest Lakes in Nebraska
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake McConaughy | Keith | 24,885 acres | - |
| 2 | Harlan County Lake | Harlan | 12,822 acres | - |
| 3 | Calamus Reservoir | Loup | 5,032 acres | - |
| 4 | Swanson Lake | Hitchcock | 4,661 acres | - |
| 5 | Sutherland Reservoir | Lincoln | 2,956 acres | - |
All 660 Nebraska 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 148866781). Verified October 30, 2026.