Market Street Flood Alleviation

Remedial measures were required in Mexborough, Yorkshire, where
a number of properties were experiencing 1 in 10 year flood events
due to hydraulically overloaded sewers. Flooding had not only
caused damage to properties, but also nearby infrastructure such as
manholes. The sewers in Market Street are a combined system receiving foul and surface water flows from an extensive upstream catchment. Historic construction works in the area associated with the canal had affected the sewers and led to issues with the network performance during periods of adverse weather. During significant storm events overloading of the sewer network could lead to overland flows affecting local properties, due to the topography. The outline solution was to construct a 700m3 storage tank to capture the excess flows and pump the flows back into the sewer network when the storm event subsided.