Slowing the Flow scheme,which saw 40000 trees planted, reduced peak river flow by 20%, or after 50mm of rain fell in 36 hoursTree planting and other natural approaches have prevented flooding at Pickering in North Yorkshire over Christmas,at a time when heavy rainfall caused devastating flooding across the region.
An analysis of the Slowing the Flow scheme published on Wednesday concludes that the measures reduced peak river flow by 15-20% at a time when 50mm of rain fell on sodden ground in 36 hours. The scheme was set up in 2009 after the town had suffered four serious floods in 10 years, with the flooding in 2007 estimated to have caused approximately £7m of damage.
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Source: theguardian.com