Overview

This sluice controls water levels in the King’s Sedgemoor Drain (KSD) and the River Sowy, which is also known as the River Parrett Flood Relief Channel.

Dunball Sluice is a critical structure in the defence of the Somerset Levels and Moors and became operational in 1971. It sits at the location where the King’s Sedgemoor Drain (KSD) meets the tidal River Parrett. 4 gated culverts control water levels by releasing water into the Parrett when the tide permits while
preventing the tide from bringing saltwater into the KSD.

The refurbishment will make environmental improvements to encourage the migration of eels and improve access for otters between the KSD and the River Parrett. Health and safety improvements for Environment Agency staff and contractors who operate and maintain the sluice will also be completed as part of the scheme.

Scope

• Design, Supply, installation and subsequent removal of all Temporary Works.
• Permanent works design of equipment accessories
• Main Gate removal (8nr), cleaning, inspection, refurbishment and reinstallation.
• Installation of all M&E components necessary to refurbish
  the gates.
• Removal of counterweight boxes, transport off site and shot blast and
  paint / re-install.
• New GRP weather protection to hi-level walkway
• Design, procurement, installation and commissioning of the new
  Control Panel
• Refurbishment of all Rotork actuators
• Re-cabling Complete System
• Bypass Culvert tidal flap removal, inspection, shot blast and paint
• Tilting weir Penstock removal, inspection, shot blast and paint
  and re-install
• Permanent handrail design and installation

Gallery