National drought group – July update

Earlier this month the National Drought Group held an update meeting for stakeholders, to share the latest information regarding mains water availability, together with a review of weather patterns likely to affect supplies and the wider environment this year.  

In contrast to the unseasonably dry spring, rainfall during the months of April, May and June 2023 represented a partial return to long-term averages.  During the 3-month period, England received 81% of the long-term average of rainfall.

During June 2023, England received 68% of the long-term average (LTA) of rainfall. However, this figure hid regional variation; East England received only 49% of the long-term average, whilst the North-West received 91% of the LTA.

The consistent rainfall during April, May and June has ensured groundwater levels in nearly all areas of the country have recharged, however, river flow in some areas of the country remains low, particularly in eastern England and areas of the northwest.  As a result, Cornwall and Devon, together with Norfolk, remain in drought status.

Natural England reported the dry weather during March and April had a significant effect on protected sites.  Specific examples given included protected rivers running dry, multiple fires on sites of special scientific interest (SSSI), and breeding sites lacking sufficient water to support birds and mammals.  The dry weather also impacted peatland restoration schemes, tree planting schemes and species restoration schemes.    

Temporary Use Bans (TUB) remain in place for the South West Water (Cornwall and parts of Devon)  as well as South East Water (Kent and Sussex).  It is worth noting, however, that the TUB covering Kent and Sussex has been introduced not because of water availability, but exceptional demand. 

The MET office forecast suggests unsettled weather will remain until the end of July/beginning of August, before higher pressure develops in the northwest.  This may bring drier conditions in August, with temperatures more likely to be above average.  Rain and showers remain likely throughout the country.