Lakes / Utah / Iron County / Foster Reservoir
Foster Reservoir, Utah
72.47 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Utah
37.82 degrees N, 112.72 degrees W - Iron 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 Foster Reservoir Stacks Up
- Larger than 46% of the 298 lakes counted in Utah.
- About 68 miles from St. George, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Red Creek Reservoir | Iron | 3.6 mi | 38.55 acres |
| Yankee Meadows Reservoir | Iron | 5.7 mi | 29.41 acres |
| Panguitch Lake | Garfield | 8.5 mi | 1,051.93 acres |
| Rush Lake | Iron | 18 mi | 620.94 acres |
| Navajo Lake | Kane | 21 mi | 708.9 acres |
| Cow Lake | Kane | 22 mi | 29.41 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Foster Reservoir
How Big Is Foster Reservoir?
Foster Reservoir covers 72.47 acres in Iron County, Utah.
What Is the Largest Lake in Iron County?
Quichapa Lake is the largest lake in Iron County, at 1,663.76 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 79030442). Verified October 30, 2026.