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 well above average in September at 278% of the Long Term Average (LTA). Over the last three months (July to September inclusive), our Central region has received above average rainfall (151% of the LTA) and above average effective precipitation (212% of the LTA). Soils are now wetter than average (Soil Moisture Deficit (SMD) is lower than the LTA), meaning any forthcoming rainfall is likely to provide more groundwater recharge than average.
Groundwater levels have started to increase through September and remain well above average for the time of year due to the above average rainfall during the last recharge period and increase to levels through September. Groundwater levels are likely to remain above average over the next six months if rainfall is 60% of the LTA or more. As a result of the above average levels, groundwater is likely to continue providing support to chalk stream flows next spring/summer. Groundwater levels are currently in the same position than the above average conditions experienced in 2001 at this time, and in a higher position than 2014 and 2021 at the end of September.
Please refer to our Drought Plan for further information about droughts and how we manage them.