Lakes / Utah / Box Elder County / Willard Bay Reservoir
Willard Bay Reservoir, Utah
9,991.46 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Utah
41.38 degrees N, 112.09 degrees W - Box Elder 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 Willard Bay Reservoir Stacks Up
- Ranks #7 for surface area among the Utah lakes counted so far - 9,991.46 acres.
- About 12 miles from Ogden, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| South East Bay | Box Elder | 8.4 mi | 598.98 acres |
| Klondike Lake | Box Elder | 9.2 mi | 129.48 acres |
| North Bay | Box Elder | 9.7 mi | 191.46 acres |
| Horseshoe Sloughs | Box Elder | 11 mi | 117.87 acres |
| Mantua Reservoir | Box Elder | 12 mi | 514.72 acres |
| South Bay | Box Elder | 13 mi | 4,249.11 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Willard Bay Reservoir
How Big Is Willard Bay Reservoir?
Willard Bay Reservoir covers 9,991.46 acres in Box Elder County, Utah.
What Is the Largest Lake in Box Elder County?
Great Salt Lake is the largest lake in Box Elder County, at 925,981.5 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 60620312). Verified October 30, 2026.