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Yorkshire reservoirs record largest weekly rise in over 30 years

reservoir with visibly rising water level after heavy rainfall
Written by H2O Team
Yorkshire’s reservoirs have recorded their largest weekly increase in more than three decades, with total stocks rising to 45.6%—an uplift of 14.8 percentage points in seven days following heavy rainfall across the region. Despite the improvement, storage remains well below the seasonal average of 69.6%.Significant inflows were reported at several key reservoirs over the last week, including:
  • Scar House (Nidderdale): over 3 billion litres
  • Grimwith (Yorkshire Dales): over 2.7 billion litres
  • Langsett (South Yorkshire): over 900 million litres
  • Digley (West Yorkshire): over 750 million litres

Groundwater levels and river flows across the region have also seen a marked rebound, helping support water resources recovery.

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.

While the increase in reservoir and groundwater stocks is positive and very welcome after the driest summer on record, our stocks are still well below where they should be at this time of year. 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. We’re hoping this will occur through usual autumn and winter rainfall and we will continue to monitor levels and remove the restrictions as soon as we are able.

Once again we’d like to thank customers’ efforts to adhere to the restrictions and for those taking further steps to conserve water resources.

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