Huerhuero Soil Series
USDA Code: CA0335
K-Factor
0.37
Soil Erodibility Factor
Texture Class
clay loam
Drainage Class
moderately well drained
About Huerhuero
Moderately deep, moderately well drained soils formed in alluvium from mixed sedimentary rock sources. Found on terraces and alluvial fans.
K factor values are sourced from the USDA Natural Resources Conservation Service (NRCS) SSURGO database.
Using Huerhuero in a RUSLE calculation
For a California construction project, use the soil K factor with rainfall erosivity, slope length and steepness, cover management, and support practice inputs. The K factor represents the soil erodibility portion of the model, so selecting the soil series that matches the site is important for defensible stormwater documentation.
In a SWPPP workflow, the practical question is not just what soil type is mapped near the project. It is whether the mapped series, K factor, and drainage assumptions match the site evidence well enough to support the RUSLE or RUSLE2 calculation.
California Distribution
Found primarily in San Luis Obispo and Monterey counties. Name derived from a Spanish land grant.
Counties Where Found
Huerhuero soil FAQ
What is the K factor for Huerhuero soil?
Huerhuero has a listed K factor of 0.37 in the Rapid RUSLE soil directory. Confirm final values against project specific soil survey data before submitting permit documents.
Where is Huerhuero soil found in California?
Huerhuero is mapped in Monterey, San Luis Obispo. County mapping is based on available soil series data and should be verified for the exact project location.
How is Huerhuero used in RUSLE erosion calculations?
Use the Huerhuero K factor as the soil erodibility input in RUSLE or RUSLE2, along with rainfall, slope, cover, and support practice factors for the site.
Calculate erosion risk with Huerhuero soil data
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