The coarse fragment factor is calculated:
4:1.1.15
where rock is the percent rock in the first soil layer (%).
Table 4:1-5: SWAT input variables that pertain to sediment yield.
| Variable Name | Definition | Input File |
|---|---|---|
USLE_K
: USLE soil erodibility factor (0.013 metric ton m hr/ (m-metric ton cm))
.sol
USLE_C
: Minimum value for the cover and management factor for the land cover
crop.dat
USLE_P
: USLE support practice factor
.mgt
SLSUBBSN
: Slope length (m)
.hru
HRU_SLP
: Average slope of the subbasin (% or m/m)
.hru
ROCK
: Percent rock in the first soil layer (%)
.sol