Observed arrival · 2026-09-29
Foundation Soils maps the ground beneath U.S. counties
A public reference using USDA soil survey data to map expansive clay and shallow water tables across U.S. counties, with city-level pages for Texas and Ohio.
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Homeowners, builders, and planners checking local ground conditions
- Worth noticing
- For Texas and Ohio, the site links every incorporated city to a page measured within city limits.
Field notes
County pages and ranked tables organize USDA soil survey measurements by the share of mapped land with shrink-swell clay or a shallow water table. A drought overlay ranks counties using clay share multiplied by drought share; the homepage dates that map to September 22, 2026. Texas and Ohio city pages are measured within incorporated city limits, rather than across a broader surrounding area.
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○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
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