Lakes / Virginia / Fairfax County / Occoquan Reservoir
Occoquan Reservoir, Virginia
1,302.49 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Virginia
38.72 degrees N, 77.34 degrees W - Fairfax 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 Occoquan Reservoir Stacks Up
- Larger than 96% of the 329 lakes counted in Virginia.
- The largest lake in Fairfax County among those counted.
- About 78 miles from Charlottesville, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Burke Lake | Fairfax | 4.0 mi | 208.31 acres |
| Huntsman Lake | Fairfax | 5.2 mi | 25.95 acres |
| Lake Jackson | Prince William | 6.0 mi | 82.78 acres |
| Lake Royal | Fairfax | 6.8 mi | 36.82 acres |
| Lake Montclair | Prince William | 7.1 mi | 103.54 acres |
| Lake Accotink | Fairfax | 8.5 mi | 74.13 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Occoquan Reservoir
How Big Is Occoquan Reservoir?
Occoquan Reservoir covers 1,302.49 acres in Fairfax County, Virginia.
What Is the Largest Lake in Fairfax County?
Occoquan Reservoir is the largest lake in Fairfax County, at 1,302.49 acres.
Largest Lakes in Virginia
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | John H. Kerr Reservoir | Mecklenburg | 44,895.08 acres | - |
| 2 | Smith Mountain Lake | Franklin | 19,676.26 acres | - |
| 3 | Lake Anna | Louisa | 12,672.74 acres | - |
| 4 | Claytor Lake | Pulaski | 4,073.29 acres | - |
| 5 | Lake Drummond | Chesapeake | 3,240.79 acres | - |
All 329 Virginia lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 46567397). Verified October 30, 2026.