The sensitivity analysis of the parameters affecting on the surface streamflow
| Rank . | Parameter name . | Parameter name . | Initial values . | Final values . | t-stat . | p-value . | |
|---|---|---|---|---|---|---|---|
| max . | min . | ||||||
| 1 | ALPHA_BF.gw(v) | Base flow alpha factor (days) | 1 | 0 | 0.0037 | −10.35 | 0 |
| 2 | CH_K2.rte(v) | Effective hydraulic conductivity in main channel alluvium. | 500 | −0.01 | 352.12 | 4.15 | 0 |
| 3 | OV-N.hru(v) | Manning's ‘n’ value for overland flow. | 30 | 0.01 | 12.41 | 2.41 | 0.016 |
| 4 | SOL_AWC.sol(r) | Soil available water storage capacity | 0 | 1 | 0.214 | 1.83 | 0.067 |
| 5 | GW_REVAP.gw(v) | Groundwater ‘revap’ coefficient. | 0.2 | 0.02 | 0.095 | −1.73 | 0.085 |
| 6 | CANMX.hru(v) | Maximum canopy storage. | 100 | 0 | 53.74 | −1.63 | 0.104 |
| 7 | CH_S2.rte(v) | Average slope of main channel. | 10 | −0.001 | 6.7 | 1.59 | 0.112 |
| 8 | GW_DELAY.gw(v) | Groundwater delay (days). | 500 | 0 | 108.7 | −1.48 | 0.14 |
| 9 | REVAPMN.gw(v) | Threshold depth of water in the shallow aquifer for ‘revap’ to occur (mm). | 500 | 0 | 407.1 | −1.38 | 0.168 |
| 10 | GWQMN.gw(v) | Threshold depth of water in the shallow aquifer required for return flow to occur (mm). | 5,000 | 0 | 2,275.8 | −1 | 0.317 |
| 11 | SLSUBBSN.hru(v) | Average slope length. | 150 | 10 | 72.98 | 0.79 | 0.425 |
| 12 | CH_N2.rte(v) | Manning's ‘n’ value for the main channel. | 0.3 | −0.01 | 0.1 | −0.68 | 0.498 |
| 12 | CN2.mgt(r) | SCS runoff curve number | 0.2 | −0.2 | −0.013 | −0.67 | 0.505 |
| 13 | SOL_BD.sol(r) | Moist bulk density. | 0.6 | −0.5 | 0.302 | −0.66 | 0.507 |
| 14 | ESCO.hru(v) | Soil evaporation compensation factor. | 1 | 0 | 0.59 | 0.6 | 0.544 |
| 15 | SOL_ALB.sol(r) | Moist soil albedo. | 0.5 | −0.5 | −0.036 | −0.55 | 0.579 |
| 16 | EPCO.hru(v) | Plant uptake compensation factor. | 1 | 0 | 0.56 | −0.14 | 0.888 |
| Rank . | Parameter name . | Parameter name . | Initial values . | Final values . | t-stat . | p-value . | |
|---|---|---|---|---|---|---|---|
| max . | min . | ||||||
| 1 | ALPHA_BF.gw(v) | Base flow alpha factor (days) | 1 | 0 | 0.0037 | −10.35 | 0 |
| 2 | CH_K2.rte(v) | Effective hydraulic conductivity in main channel alluvium. | 500 | −0.01 | 352.12 | 4.15 | 0 |
| 3 | OV-N.hru(v) | Manning's ‘n’ value for overland flow. | 30 | 0.01 | 12.41 | 2.41 | 0.016 |
| 4 | SOL_AWC.sol(r) | Soil available water storage capacity | 0 | 1 | 0.214 | 1.83 | 0.067 |
| 5 | GW_REVAP.gw(v) | Groundwater ‘revap’ coefficient. | 0.2 | 0.02 | 0.095 | −1.73 | 0.085 |
| 6 | CANMX.hru(v) | Maximum canopy storage. | 100 | 0 | 53.74 | −1.63 | 0.104 |
| 7 | CH_S2.rte(v) | Average slope of main channel. | 10 | −0.001 | 6.7 | 1.59 | 0.112 |
| 8 | GW_DELAY.gw(v) | Groundwater delay (days). | 500 | 0 | 108.7 | −1.48 | 0.14 |
| 9 | REVAPMN.gw(v) | Threshold depth of water in the shallow aquifer for ‘revap’ to occur (mm). | 500 | 0 | 407.1 | −1.38 | 0.168 |
| 10 | GWQMN.gw(v) | Threshold depth of water in the shallow aquifer required for return flow to occur (mm). | 5,000 | 0 | 2,275.8 | −1 | 0.317 |
| 11 | SLSUBBSN.hru(v) | Average slope length. | 150 | 10 | 72.98 | 0.79 | 0.425 |
| 12 | CH_N2.rte(v) | Manning's ‘n’ value for the main channel. | 0.3 | −0.01 | 0.1 | −0.68 | 0.498 |
| 12 | CN2.mgt(r) | SCS runoff curve number | 0.2 | −0.2 | −0.013 | −0.67 | 0.505 |
| 13 | SOL_BD.sol(r) | Moist bulk density. | 0.6 | −0.5 | 0.302 | −0.66 | 0.507 |
| 14 | ESCO.hru(v) | Soil evaporation compensation factor. | 1 | 0 | 0.59 | 0.6 | 0.544 |
| 15 | SOL_ALB.sol(r) | Moist soil albedo. | 0.5 | −0.5 | −0.036 | −0.55 | 0.579 |
| 16 | EPCO.hru(v) | Plant uptake compensation factor. | 1 | 0 | 0.56 | −0.14 | 0.888 |