Ranking of the parameters used in SMA algorithm of HEC-HMS
| Model parameter . | Definition . | Rank . |
|---|---|---|
| Soil percolation | Average rate of the percolation of water from soil into the GW1 layer, mm/h | 1 |
| GW1 percolation | Percolation rate to GW2 layer, mm/h | 2 |
| Soil storage | Max. amount of water that could held by the soil profile, mm | 3 |
| GW2 percolation | Deep percolation from GW2 layer, mm/h | 4 |
| GW1 coefficient | GW1 delayed time, h | 5 |
| GW1 storage | Storage volume in mm in GW1 layer | 6 |
| Tension storage | Portion of the soil storage from which water in this storage is lost through evapotranspiration only, mm | 7 |
| GW2 coefficient | GW2 delayed time, h | 8 |
| GW2 storage | Storage volume in mm in GW2 layer, mm | 9 |
| Model parameter . | Definition . | Rank . |
|---|---|---|
| Soil percolation | Average rate of the percolation of water from soil into the GW1 layer, mm/h | 1 |
| GW1 percolation | Percolation rate to GW2 layer, mm/h | 2 |
| Soil storage | Max. amount of water that could held by the soil profile, mm | 3 |
| GW2 percolation | Deep percolation from GW2 layer, mm/h | 4 |
| GW1 coefficient | GW1 delayed time, h | 5 |
| GW1 storage | Storage volume in mm in GW1 layer | 6 |
| Tension storage | Portion of the soil storage from which water in this storage is lost through evapotranspiration only, mm | 7 |
| GW2 coefficient | GW2 delayed time, h | 8 |
| GW2 storage | Storage volume in mm in GW2 layer, mm | 9 |