Sinkhole risk in Alexandria 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 to do about a house in Alexandria city
No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.
Across 15 square miles, under one square mile of Alexandria city maps onto soluble rock. With about 159,102 residents (10,653 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 250 map points about 0.2 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 Alexandria city
The nearest county rated sinkhole country is Clarke County, VA, about 53 miles northwest. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.
- Arlington County, VA 4 mi north · 0% at surface
- Falls Church city, VA 7 mi northwest · 0% at surface
- District of Columbia, DC 7 mi northeast · 1% at surface
- Fairfax County, VA 10 mi west · 2% at surface
- Fairfax city, VA 12 mi west · 0% at surface
- Prince George's County, MD 13 mi east · 22% at surface
Against the rest of Virginia
Alexandria city ranks 118 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%