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Tujunga Soil Series

USDA Code: CA0689

K-Factor

0.17

Soil Erodibility Factor

Texture Class

loamy coarse sand

Drainage Class

excessively drained

About Tujunga

Deep, excessively drained soils formed in coarse alluvium derived from granitic and gneissic rock sources. Found on recent alluvial fans, floodplains, and outwash plains at the base of the San Gabriel Mountains and other ranges, slopes of 0 to 5 percent.

K-factor values are sourced from the USDA Natural Resources Conservation Service (NRCS) SSURGO database.

California Distribution

One of the most extensively mapped soils of the Los Angeles Basin, San Bernardino, and Orange counties. Named for the community of Tujunga. Important for groundwater recharge and is the substrate for many spreading grounds and percolation basins.

Counties Where Found

Los Angeles
Orange
Riverside
San Bernardino
Ventura

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