The revitalised flood hydrograph rainfall-runoff model (ReFH) was first developed by Kjeldsen et al. (2005). The ReFH conceptual model has a number of improvements over the existing FSR/FEH rainfall-runoff model, summarised in Table 3. In addition, the development used more calibration data and higher-resolution soils data.
The components of the conceptual unit hydrograph FSR/FEH and ReFH rainfall-runoff models
| Component . | FSR/FEH standard design rainfall . | ReFH standard design rainfall . |
|---|---|---|
| Rainfall | FSR | FEH99/FEH13 |
| Loss Model | Static PR | PR varies spatially and temporally. Parameters are Cini, the initial soil moisture depth and Cmax, the maximum soil moisture depth. |
| Routing | Triangular unit hydrograph, controlled by Tp | ‘Kinked’ unit hydrograph, controlled by Tp. |
| Baseflow | Static baseflow equal to BF0, the initial baseflow | Varies throughout event. Parameterised by the BL (baseflow recession constant), BR (baseflow recharge) and BF0. |
| Component . | FSR/FEH standard design rainfall . | ReFH standard design rainfall . |
|---|---|---|
| Rainfall | FSR | FEH99/FEH13 |
| Loss Model | Static PR | PR varies spatially and temporally. Parameters are Cini, the initial soil moisture depth and Cmax, the maximum soil moisture depth. |
| Routing | Triangular unit hydrograph, controlled by Tp | ‘Kinked’ unit hydrograph, controlled by Tp. |
| Baseflow | Static baseflow equal to BF0, the initial baseflow | Varies throughout event. Parameterised by the BL (baseflow recession constant), BR (baseflow recharge) and BF0. |