Lakes / Utah / Sanpete County / Ninemile Reservoir
Ninemile Reservoir, Utah
124.29 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Utah
39.17 degrees N, 111.71 degrees W - Sanpete 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 Ninemile Reservoir Stacks Up
- Larger than 58% of the 298 lakes counted in Utah.
- About 73 miles from Provo, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Palisade Lake | Sanpete | 3.0 mi | 66.72 acres |
| Gunnison Reservoir | Sanpete | 4.3 mi | 1,248.15 acres |
| Olsen Slough | Sanpete | 10.0 mi | 40.03 acres |
| Willow Creek Reservoir | Sevier | 11 mi | 125.04 acres |
| Island Lake | Sanpete | 13 mi | 28.42 acres |
| Duck Fork Reservoir | Sanpete | 14 mi | 51.15 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Ninemile Reservoir
How Big Is Ninemile Reservoir?
Ninemile Reservoir covers 124.29 acres in Sanpete County, Utah.
What Is the Largest Lake in Sanpete County?
Sevier Bridge Reservoir is the largest lake in Sanpete County, at 9,093.63 acres.
Largest Lakes in Utah
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Great Salt Lake | Box Elder | 925,981.5 acres | - |
| 2 | Lake Powell | Kane | 128,544.01 acres | - |
| 3 | Sevier Lake | Millard | 122,527.82 acres | - |
| 4 | Utah Lake | Utah | 91,155.46 acres | - |
| 5 | Bear Lake | Rich | 70,008.54 acres | - |
All 298 Utah lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 79648057). Verified October 30, 2026.