Gillender Soil Series
K-Factor
0.24
Soil Erodibility Factor
Texture Class
sandy loam
Drainage Class
well drained
About Gillender
Moderately deep, well drained soils formed in alluvium derived from mixed granitic and metamorphic rock sources. Found on stream terraces and alluvial fans at low elevations in the Sierra foothills.
K factor values are sourced from the USDA Natural Resources Conservation Service (NRCS) SSURGO database.
Using Gillender 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
Mapped in Amador and Calaveras counties along the terraces of the Mokelumne and Calaveras rivers. Important for irrigated orchards and vineyards in foothill valleys.
Counties Where Found
Gillender soil FAQ
What is the K factor for Gillender soil?
Gillender has a listed K factor of 0.24 in the Rapid RUSLE soil directory. Confirm final values against project specific soil survey data before submitting permit documents.
Where is Gillender soil found in California?
Gillender is mapped in Amador, Calaveras. County mapping is based on available soil series data and should be verified for the exact project location.
How is Gillender used in RUSLE erosion calculations?
Use the Gillender 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 Gillender soil data
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