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Reservoirs see largest weekly increase in over 30 years

Tuesday, 23 September 2025 16:51

Reservoirs in Yorkshire saw the largest weekly rise in over 30 years.

Reservoir stocks increased to 45.6% - up 14.8% in the last seven days – after heavy rainfall across the region. However, the reservoirs remain well below the 69.6% average for this time of year. 

The largest inflows of water over the last week were seen at:  

  • Scar House reservoir, Nidderdale - over 3bn litres inflow 
  • Grimwith reservoir, Yorkshire Dales - over 2.7bn litres inflow 
  • Langsett reservoir, South Yorkshire – over 900 million litres inflow  
  • Digley reservoir, West Yorkshire – over 750 million litres inflow 
  • Groundwater levels and the region’s rivers also saw a significant increase in water levels. 

Dave Kaye, director of water services at Yorkshire Water, said:

“The rainfall we’ve seen over the last seven days has had a significant impact – the largest weekly increase in stocks we’ve seen in 30 years. The rain over the last seven days has also recharged groundwater and the region’s rivers. The recharge of the rivers means we can enact our drought orders and permits to allow the reservoirs maximum recovery.  

“We hope the reservoirs and groundwater will continue to recover through the autumn and winter months so we’re in a good position entering 2026. 

“Despite the relief of the rainfall, we are continuing our efforts to tackle more than 800 leaks per week and lay over 1,000km of new water pipes over the next five years."

The hosepipe restrictions remain in place and will be in effect until reservoir and groundwater levels have seen sufficient recovery.

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