Central Region
*The long term average (LTA) has been calculated statistically, using the long term data record for this hydrograph. The respective drought zones are used as operational triggers and have been derived using the LTA.
Rainfall in our Central region was above average in May at 119% of the Long Term Average (LTA). Over the last three months (March to May inclusive), our Central region has received above average rainfall (152% of the LTA) and effective precipitation (185% of the LTA). As a result, soils remain wetter than average, meaning any forthcoming rainfall will provide a greater contribution to groundwater recharge.
Groundwater levels have remained above average through May due to the above average rainfall over the autumn and winter period but started to decrease. Groundwater levels are likely to remain above average over the next six months if rainfall is more than 60% of the LTA. As a result of the above average levels, groundwater will be able to provide additional support to chalk stream flows this summer. Groundwater levels are currently in a similar position with the above average conditions experienced in 2013/14 and in a higher position than 2020/21 at the end of May.
Please refer to our Drought Plan for further information about droughts and how we manage them.