Lakes / Utah / Millard County / Topaz Slough
Topaz Slough, Utah
29.65 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Utah
39.45 degrees N, 112.78 degrees W - Millard 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 Topaz Slough Stacks Up
- Larger than 10% of the 298 lakes counted in Utah.
- About 80 miles from Provo, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Gunnison Bend Reservoir | Millard | 11 mi | 495.94 acres |
| Deep Lake | Millard | 12 mi | 37.56 acres |
| Crafts Lake | Millard | 13 mi | 210.78 acres |
| Clay Knoll Reservoir | Millard | 15 mi | 33.85 acres |
| Picture Rock Reservoir | Juab | 16 mi | 30.64 acres |
| Swan Lake | Millard | 16 mi | 223.88 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Topaz Slough
How Big Is Topaz Slough?
Topaz Slough covers 29.65 acres in Millard County, Utah.
What Is the Largest Lake in Millard County?
Sevier Lake is the largest lake in Millard County, at 122,527.82 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 81234201). Verified October 30, 2026.