Water resources

Water resources

September 2020 update

Whilst the beginning of August was largely dry, the latter part of the month saw widespread heavy rainfall. This means that overall, the region received 177% (108 mm) of the monthly average rainfall. The rain received in the last six months (March to August) has been 98% of the long-term average.

Surface reservoir storage declined as expected at the start of August, however reservoirs did respond to the rainfall at the end of the month. Reservoir storage for the week commencing 31st August was 63% of total capacity. Pumped storage (where we pump water from rivers to top up storage in the surface reservoirs) was used to support Luxhay reservoir at the beginning of the month.

River flows are monitored on a daily basis to ensure stream supports are switched on as the appropriate flow triggers are reached. Stream supports are helping to improve river flows in the following locations (as at 17/09/2020):

  • Brixton Deverill (3.5 Ml/d into River Wylye, nr Warminster)
  • Charlton (1.9 Ml/d into Charlton Stream, nr Malmesbury)
  • Chitterne (2.4 Ml/d into Chitterne Brook, nr Warminster)
  • Dewlish (1.1 Mld into Devil’s Brook, Dorset)
  • Hullavington (1.5 Ml/d into Gauze Brook, nr Malmesbury)
  • Kingston Deverill (10.0 Ml/d into River Wylye, nr Warminster)
  • Little Chalfield (0.8 Ml/d into Chalfield Brook, nr Bradford on Avon)
  • Lower Stanton St Quinton (1.5 Ml/d into Rodbourne Stream, nr Chippenham)
  • 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)

Groundwater levels continued to recede in August, however most are broadly 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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