Sinkhole risk in Arlington County, 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 Arlington County

No soluble bedrock is mapped here, so natural sinkholes are unlikely. Collapses from broken pipes or old mines are a separate risk.

Across 26 square miles, under one square mile of Arlington County maps onto soluble rock. With about 239,807 residents (9,224 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 518 map points about 0.2 miles apart, so a pocket smaller than that can be missed or overstated.

Worth reading for this county: how these percentages are measured, and the warning signs that apply anywhere.

Counties around Arlington County

The nearest county rated sinkhole country is Jefferson County, WV, about 51 miles northwest. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.

Falls Church city, VA 4 mi west · 0% at surface
Alexandria city, VA 4 mi south · 0% at surface
District of Columbia, DC 5 mi east · 1% at surface
Fairfax County, VA 10 mi west · 2% at surface
Fairfax city, VA 11 mi west · 0% at surface
Prince George's County, MD 14 mi east · 22% at surface

Against the rest of Virginia

Arlington County ranks 99 of 133 in Virginia for soluble rock at the surface, and sits above 0% of US counties on that measure.