A crucial flood defence structure in Highbridge is set for potential upgrades aimed at reducing flood risks for the communities upstream. The River Brue, originating from Brewham near Bruton, meanders through the Somerset Levels, separating Glastonbury and Street, before emptying into the sea at Highbridge.
Because much of the River Brue’s catchment lies near sea level, it is highly susceptible to flooding, especially after intense rainfall events such as those experienced in September 2023. Responding to this vulnerability, the Somerset Rivers Authority (SRA), established following the severe floods of 2013/14, has proposed widening the Highbridge Clyce as part of a comprehensive flood risk reduction strategy for the wider Brue catchment.
The Highbridge Clyce, located at the end of Clyce Road, serves to prevent saltwater from the Bristol Channel from moving upstream and causing the river banks to overflow during high tides. Highbridge itself features significant development on both riverbanks, including the Brue Farm housing estate, Walrow industrial estate, and the railway station, heightening the importance of effective flood defences in this area.
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On September 12, after extensive research and hydraulic modelling, the SRA board met in Taunton to approve a phased plan of short-, medium-, and long-term measures to strengthen flood resilience along the River Brue and River Sheppey catchment.
In the short term, the SRA and its partners, including local drainage boards, will address localized low spots along existing river banks. This initiative aims to bolster bank integrity and prevent overflow without increasing flood risks elsewhere.
Medium-term plans, spanning the next five to ten years, target improved water flow between Westhay (near Glastonbury) and Highbridge through the Cripps River, which channels part of the River Brue into the man-made Huntspill River. Andy Wallis, a consultant with A. W. Water Engineering, explained that this work will primarily focus on removing “pinch points” within the river caused by encroachment, bank slumps, and vegetation growth rather than broad-scale dredging. Updated survey data will guide these interventions.
Additionally, the SRA is investigating three other medium-term options for further study, all designed to optimize flood management in the catchment area.
Looking further ahead, the SRA plans to explore modifications to Clyse Hole—located between Glastonbury and Street—and enhancements to the Glastonbury Millstream and South Drain. Wallis noted there is potential to divert more water into the South Drain during flood events, which could alleviate pressure in other parts of the lowland Brue catchment while offering environmental benefits.
An update on these proposals is expected at the SRA’s next board meeting scheduled for December 5.