SSURGO National Analysis · 4,089 Survey Areas

America's 100 Most At-Risk Counties

Ranked by combined Fragile Soil Index and Organic Matter Depletion risk score from 967,000+ SSURGO map unit interpretations. Updated weekly from the National Cooperative Soil Survey (SSURGO).

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Counties ranked
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Most at-risk state
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Avg FSI (top 100)
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Avg OM depletion
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Rank County / Survey Area State FSI Class FSI Score OM Class OM Score Combined Risk ▼
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