Parameter Name Description Suggested range
coem The slope flow speed multiplier 3.33, 100.0
river The channel flow speed multiplier 3.33,100.0
under The horizontal velocity under the ground (Generally hydraulic conductivity used for this velocity) 0.01,51.0
leako The overland reservoir discharge multiplier 0.01,1.0
leaki The interflow reservoir discharge multiplier 0.01,1.0
th The flow accumulation needed for a cell to be marked as a channel cell. If a cells flow accumulation is greater than th then the cells slope flow speed is multiplied by river 0.01,30.0
pwm The maximum soil water capacity (depth integrated pore space) of the soil layer 0.01,250.0
pb The exponent of the variable infiltration curve. 0.01,4.0
pim The impervious area ratio 0.00,100.0
pke The multiplier to convert between input PET and local actual ET 0.01,1.0
pfc The soil saturated hydraulic conductivity 0.01,51.0
iwu The initial value of soil water. (This is a percentage of the pwm) 0.0,100.0
iso The initial value of overland reservoir 0.01,100.0
isu The initial value of interflow reservoir 0.01,100.0
Table 1: CREST model parameters with their value ranges.