Table 4.

SWAT model parameters adjusted during hydrology calibration and final values

Parameter	Description	Value
ESCO	Soil evaporation compensation factor	0.7
SURLAG	Surface runoff lag time	1
GW_DELAY	Groundwater delay (days)	10, 75 (varies by subbasin)
ALPHA_BF	Baseflow alpha factor	0.95
GWQMN	Threshold depth of water in the shallow aquifer required for return flow to occur (mm)	0
REVAPMN	Threshold depth of water in the shallow aquifer required for revap to occur (mm)	0
SFTMP	Snowfall temperature (C°)	0
SMTMP	Snowmelt temperature (C°)	0
SMFMX	Maximum melt rate for snow during the year	3
SMFMN	Minimum melt rate for snow during the year	1
CH_N1	Manning’s n value for tributary channel	0.3
CH_N2	Manning’s n value for main channel	0.03
CH_K1	Effective hydraulic conductivity in tributary channel alluvium (mm/h)	0–300 (varies by subbasin)