Water resources

Water resources

August 2019 update

July was a fairly dry month for the region, with a total of 40 mm rainfall. This is 68% of the monthly average and means that overall, the rain received in the last six months (February to July) has been 93% of the long-term average, at 347 mm.

Although surface reservoir storage decreased throughout July, our reservoirs are in a better position compared to this time last year. At the end of July, storage was 79% of total capacity (please see the table below for our latest resource position).

River flows are monitored on a daily basis to ensure stream supports are switched on as the appropriate flow triggers are reached. Most river flows continued to recede throughout July, although some response to the rainfall halfway through the month was observed. By the end of the month, most river 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 15/08/19):

  • Briantspuddle (4.0 Ml/d into River Piddle, Dorset)
  • Brixton Deverill (8.6 MI/d into River Wylye, nr Warminster)
  • Chitterne (2.8 Ml/d into Chitterne Brook, nr Warminster)
  • Dewlish (1.1 MI/d into Devil's Brook, Dorset)
  • Hullavington (1.7 Ml/d into Gauze Brook, nr Malmesbury)
  • Kingston Deverill (10 Ml/d into River Wylye, nr Warminster)
  • Little Chalfield (1.0 Ml/d into Chalfield Brook, nr Bradford on Avon)
  • Lower Stanton St Quinton (1.5 Ml/d into Rodbourne Stream, nr Chippenham)
  • Luckington (2.5 Ml/d into Sherston Avon, nr Malmesbury)
  • Porton (2.5 Ml/d into River 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 across the region are slightly below average for the time of year, and are lower than they were this time last 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.

Weekly update - 15/08/2019




Supporting river flows 

Water saving initiatives 

85% of average – for the last 12 months
68% of average – for last month 

73% full

Below average 

48 million litres per day

3.4 million litres since 2015

Related download

Water saving in the garden - make every drop matter