Leighcan Soil Series
K-Factor
0.17
Soil Erodibility Factor
Texture Class
gravelly sandy loam
Drainage Class
well drained
About Leighcan
Shallow to moderately deep, well drained soils formed in till, colluvium, and residuum derived from granitic and metamorphic rocks. Cryic soil temperature regime. Found on glaciated uplands, moraines, and rocky mountainsides above 7,000 ft elevation.
K factor values are sourced from the USDA Natural Resources Conservation Service (NRCS) SSURGO database.
Using Leighcan 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
Characteristic of the high alpine terrain in Alpine and Mono counties. Supports sparse subalpine and alpine vegetation; important for watershed hydrology above major eastern Sierra reservoirs.
Counties Where Found
Leighcan soil FAQ
What is the K factor for Leighcan soil?
Leighcan has a listed K factor of 0.17 in the Rapid RUSLE soil directory. Confirm final values against project specific soil survey data before submitting permit documents.
Where is Leighcan soil found in California?
Leighcan is mapped in Alpine, Mono, Tuolumne. County mapping is based on available soil series data and should be verified for the exact project location.
How is Leighcan used in RUSLE erosion calculations?
Use the Leighcan 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 Leighcan soil data
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