Sinkhole risk in Baltimore city, MD: 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 81 square miles, under one square mile of Baltimore city maps onto soluble rock. With about 568,271 residents (7,020 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 305 map points about 0.5 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 Baltimore city
The nearest county rated sinkhole country is Jefferson County, WV, about 67 miles west. 3 of the 6 closest counties land in the same band; the ground changes quickly around here.
- Baltimore County, MD 10 mi north · 8% at surface
- Howard County, MD 17 mi west · under 1% at surface
- Anne Arundel County, MD 21 mi south · 15% at surface
- Harford County, MD 23 mi northeast · under 1% at surface
- Kent County, MD 26 mi east · under 1% at surface
- Carroll County, MD 28 mi northwest · 2% at surface
Against the rest of Maryland
Baltimore city ranks 24 of 24 in Maryland for soluble rock at the surface, and sits above 0% of US counties on that measure.
- Washington County 61%
- Calvert County 47%
- Allegany County 24%
- Prince George's County 22%
- Anne Arundel County 15%