Sinkhole risk in Fairfax city, VA: No soluble rock mapped
No soluble rock mapped
No soluble bedrock mapped.
- On soluble rock
- 0%
- At or near the surface
- 0%
- Buried under cover
- 0%
What this means before you buy
No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.
Across 6 square miles, under one square mile of Fairfax city maps onto soluble rock. With about 26,340 residents (4,220 per square mile), most of the county is built up, so a mapped unit is likely to sit under somebody's street. The figures come from 327 map points about 0.1 miles apart, so a pocket smaller than that can be missed or overstated.
Read next: how these percentages are measured, and the warning signs that apply anywhere.
Counties around Fairfax city
The nearest county rated sinkhole country is Clarke County, VA, about 41 miles northwest. 5 of the 6 closest counties land in the same band, so this is a regional pattern rather than a local quirk.
- Fairfax County, VA 2 mi southeast · 2% at surface
- Falls Church city, VA 7 mi east · 0% at surface
- Manassas Park city, VA 10 mi southwest · 0% at surface
- Arlington County, VA 11 mi east · 0% at surface
- Alexandria city, VA 12 mi east · 0% at surface
- Manassas city, VA 12 mi southwest · under 1% at surface
Against the rest of Virginia
Fairfax city ranks 122 of 133 in Virginia for soluble rock at the surface, and sits above 0% of US counties on that measure.
- Lexington city 100%
- Salem city 100%
- Roanoke city 98%
- Winchester city 90%
- Bristol city 89%