This dataset is an update to the National River Flow Archive's Peak Flow Dataset including the files for use in the WINFAP software for flood estimation. The dataset includes Annual Maxima (AMAX) and Peaks over Threshold (POT) data for 939 gauging stations which have been updated with an additional water year of data (October 2019 to September 2020) in England, Northern Ireland and Wales. No update was available for sites in Scotland due to issues with the hydrometric archive.
This work was supported by the Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCAPE programme delivering National Capability.
