San Joaquin is an officially designated state insignia, the state soil of the U.S. state of California. The California Central Valley has more than 500,000 acres (2,000 km2) of San Joaquin soils, named for the south end of that valley.
San Joaquin is an officially designated state insignia, the state soil of the U.S. state of California. The California Central Valley has more than 500,000 acres (2,000 km2) of San Joaquin soils, named for the south end of that valley.
Source: Wikipedia "San Joaquin (soil)" · CC BY-SA 4.0
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