Water resources

Water resources

June 2020 update

May was an exceptionally dry month for the Wessex region, with just 10% (6 mm) of the monthly average rainfall. As a result, this was the driest May on record. Owing to the wet winter, the rain received in the last six months (December to May) has been 109% of the long-term average, at 493 mm.

Surface reservoir storage declined steadily throughout May, and at the end of the month storage was 83% of total capacity. Pumped storage (where we pump water from rivers to top up storage in the surface reservoirs) is currently running into Luxhay reservoir.

River flows are monitored on a daily basis to ensure stream supports are switched on as the appropriate flow triggers are reached. River flows across the region decreased throughout May, and at the end of the month most flows were below average for the time of year.

Stream supports, which help improve river flows, are in operation in the following locations (as at 18/06/2020):

  • Briantspuddle (9.0 Ml/d into River Piddle, Dorset)
  • Chitterne (1.5 Ml/d into Chitterne Brook nr Warminster)
  • Hullavington (1.5 Ml/d into Gauze Brook, nr Malmesbury)
  • Kingston Deverill (5.0 Ml/d into River Wylye, nr Warminster)
  • Lower Stanton St Quinton (1.5 Ml/d into Rodbourne Stream, nr Chippenham)
  • Luckington (2.5 Ml/d into Sherston Avon, nr Malmesbury)
  • Porton (1.5 Ml/d into Salisbury Bourne, nr Salisbury)
  • South Wraxall (2.0 Ml/d into Chalfield Brook, nr Bradford on Avon)
  • Tetbury (2.5 Ml/d into Tetbury Avon, nr Malmesbury)
  • Watergates (6.5 Ml/d into Tadnoll Brook, Dorset)
  • Yarde Lane (1.5 Ml/d into Pimperne Stream, Dorset) 

Groundwater levels continued to recess throughout May. At the end of the month, levels in the south were below average for the time of year, whilst most levels in the north were generally average for the time of year.

We are committed to helping customers to reduce their water use. We offer free water efficiency devices to our customers and also provide useful tips on how to reduce water use both in in the home and garden. Using water wisely can reduce customers' utility bills and help their local environment.  

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