USDA Soil Order
Vertisols
Clay-rich soils that shrink and swell dramatically with moisture changes. They form deep cracks when dry and can damage foundations and infrastructure.
High shrink-swell clayDeep cracking when drySelf-mulchingChallenging for construction
Distribution: Texas Blackland Prairie, Mississippi Delta, and Central California.
Vertisols Distribution Map
Interactive choropleth map coming soon.
Will show counties where Vertisols is the dominant soil order.