Hydrological Summary for April 2018 published

April felt like many seasons rolled into one month, encompassing freezing temperatures and snowfall, persistent wet weather and a settled spell with temperatures more typical of the summer. The rainfall pattern, above average for the UK as a whole and below average in northern Scotland and parts of Northern Ireland, reinforced that of March. With a wet start to spring, river flows were notably high in much of England and Wales, and normal or above normal elsewhere. There was a short, sharp spell of unseasonably high temperatures, including the warmest April day since 1949 (29.1°C at St. James’ Park, London) and Soil Moisture Deficits (SMDs) began to develop, although soils remained wetter than average in England. Substantial late groundwater recovery has offset the delayed start to the recharge season last winter and levels were in the normal range or higher, and exceptionally high for April in most aquifers in north-east and south-west England, although the risk of groundwater flooding is low. With the recharge season drawing to a close, and reservoir stocks close to average for the time of year, the water resources outlook for summer 2018 is healthy.

Read the full summary here.