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Table 3

Key parameters of SWAT for Hun and Upper Yangtze river basins

ParametersDefinitionHun riverUpper Yangtze river
CN2 SCS runoff curve number for moisture condition II 72 35 
ALPHA_BF Base flow recession constant (days) 0.8 0.61 
GW_DELAY Delay time for aquifer recharge (days) 31 15 
CH_N2 Manning's n value for the main and tributary channels 0.1 0.3 
CH_K2 Effective hydraulic conductivity of channel (mm/hr) 20 
SOL_AWC Available water capacity (mm/mm) 0.005 0.004 
SMTMP Snow melt minimum temperature (°C) 
CANMX Canopy maximum storage(mm) 
ESCO Soil evaporation compensation factor (mm) 0.95 0.6 
REVAPMN Threshold depth for evaporation to occur (mm) 71 120 
ParametersDefinitionHun riverUpper Yangtze river
CN2 SCS runoff curve number for moisture condition II 72 35 
ALPHA_BF Base flow recession constant (days) 0.8 0.61 
GW_DELAY Delay time for aquifer recharge (days) 31 15 
CH_N2 Manning's n value for the main and tributary channels 0.1 0.3 
CH_K2 Effective hydraulic conductivity of channel (mm/hr) 20 
SOL_AWC Available water capacity (mm/mm) 0.005 0.004 
SMTMP Snow melt minimum temperature (°C) 
CANMX Canopy maximum storage(mm) 
ESCO Soil evaporation compensation factor (mm) 0.95 0.6 
REVAPMN Threshold depth for evaporation to occur (mm) 71 120 
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