Lakes / Wyoming / Niobrara County / Mule Creek Number 1 Reservoir
Mule Creek Number 1 Reservoir, Wyoming
30.15 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Wyoming
43.27 degrees N, 104.14 degrees W - Niobrara County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Wyoming Game and Fish Department coordinates, not by eye. Schematic - not a survey map.
How Mule Creek Number 1 Reservoir Stacks Up
- Larger than 27% of the 783 lakes counted in Wyoming.
- The largest lake in Niobrara County among those counted.
- About 114 miles from Casper, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Fillinger Reservoir | Weston | 18 mi | 36.57 acres |
| Robbers Roost Reservoir | Weston | 18 mi | 96.15 acres |
| M W Lake | Weston | 24 mi | 106.04 acres |
| Bob Dixon Number 1 Reservoir | Niobrara | 25 mi | 28.06 acres |
| Howell Reservoir | Weston | 34 mi | 53.09 acres |
| Klodt Reservoir | Weston | 38 mi | 74.65 acres |
Straight-line distance between lake centers.
Facts and Figures
Deepest Natural Lakes in Wyoming
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Deep Lake | Park | 285 acres | 472 ft |
| 2 | Lake Reno | Park | 107 acres | 222 ft |
| 3 | Snowdrift Lake | Teton | 57 acres | 174 ft |
| 4 | Crater Lake | Big Horn | 39 acres | 166 ft |
| 5 | Beauty Lake | Park | 94 acres | 165 ft |
All 120 Wyoming lakes ranked by depth
Largest Lakes in Wyoming
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Yellowstone Lake | Teton | 84,442 acres | - |
| 2 | Flaming Gorge Reservoir | Sweetwater | 38,888.36 acres | 440 ft |
| 3 | Jackson Lake | Teton | 26,853.22 acres | - |
| 4 | Pathfinder Reservoir | Carbon | 22,000 acres | 192 ft |
| 5 | Seminoe Reservoir | Carbon | 20,000 acres | 200 ft |
All 783 Wyoming lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 137355445). Verified October 30, 2026.