Engineering specialists Mott MacDonald Bentley are progressing with work on a £1.5 million essential safety project which began in October last year at Yorkshire Water’s Stubden reservoir.
The work, which is expected to take around 12 months to complete, will ensure the 145 year old reservoir continues to meet the standards of the Reservoirs Act 1975.
Stubden reservoir was constructed between 1872 and 1878 and is retained by an earth filled embankment with a clay core approximately 19 meters in height, and approximately 200 meters in length. The reservoir has the capacity of 451,000 cubic meters and a surface area of 41,000 square meters.
Yorkshire Water is making improvements to the reservoir spillway. The spillway, or overflow structure, is used to control water flows into the downstream area. The work is required to ensure that the overflow continues to effectively protect the reservoir embankment from flood erosion by safely diverting excess flows away from the site.
The main construction works have now been completed, a few months ahead of schedule.
Dave Ellis, Yorkshire Water project manager said work on the essential project would ensure the safety of the reservoir.
Stubden reservoir is one of the sources of raw water for Chellow Heights water treatment works, where it is treated and put into supply. The treatment works provides clean water to every home in Bradford along with surrounding towns and villages including parts of Mirfield, Morley and Brighouse.


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