USDA SSURGO Data
Explore Your County's Soil
Free USDA soil reports for every US county — sand, silt, and clay breakdown, average pH, drainage class, and dominant soil series. Essential for farmers, gardeners, landscapers, and land buyers.
San Francisco County
California
Dominant Texture
N/A
Avg pH
N/A
Clay %
N/A
Drainage Class
N/A
Soil Order
N/A
Urban Soils of the Peninsula
Detailed soil taxonomy and pH levels are unavailable for this highly urbanized county. Much of the surface layer consists of modified urban fill and historic sand dunes. Testing is recommended to see how your urban plot compares to the national 6.5 pH median.
Why Soil Data Matters
Composition
Sand, silt, and clay percentages determine how your soil behaves.
pH Levels
Soil acidity affects nutrient availability and plant growth.
Drainage
How quickly water moves through soil impacts flooding and irrigation.
SSURGO Data
Official USDA soil surveys covering every county in the US.
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