Abstract
The current reservoir safety guidance within the UK recommends the use of the FSR/FEH rainfall-runoff model to estimate PMF (probable maximum flood) peak flows for reservoirs within the highest risk category (A). However, the FSR/FEH model has been superseded by the ReFH2 rainfall-runoff model for all other flood risk purposes in the UK. This study develops a new modelling framework for PMF estimation using ReFH2 by translating the assumptions made within the current FSR/FEH PMF procedure and applying these within the ReFH2 rainfall-runoff model. Peak flows from the methodology are compared with those from the FSR/FEH model for 400þ catchments. The study highlights the potential for ReFH2 to be used as the rainfall-runoff model for all return periods, up to and including the PMF, thereby paving the way for using the ReFH2 model for reservoir safety studies.
Original language | English |
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Pages (from-to) | 360-371 |
Number of pages | 12 |
Journal | Hydrology Research |
Volume | 54 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Mar 2023 |
Bibliographical note
This work was funded by WHS and UKCEH, through reinvestment of FEH Software and FEH Web Service income respectively.Keywords
- FSR/FEH
- ReFH
- dams
- flood estimation
- probable maximum flood
- reservoirs
ASJC Scopus subject areas
- Water Science and Technology