Summary for April 2015
Rainfall during April was well below average across England at 48% of the long term average; however, regional rainfall totals for the first 5 days of May already exceed the totals for the whole of April across all but north-west England.
Soil moisture deficits increased by up to nearly 50 mm during April and ranged between 30 and 50 mm larger than the LTA by the end of the month.
Monthly mean river flows decreased compared to March, but remain normal for the time of year at nearly two thirds of sites.
Groundwater levels decreased during the month at nearly two thirds of indicator sites, but end of month levels remain normal or higher at nearly three quarters of sites.
Reservoir stocks decreased at the majority of sites, but remain normal or higher for the time of year at nearly two thirds of locations.
Overall reservoir stocks for England decreased slightly to 92% of total capacity.