Model WA Series -Water Gate Barrier

• Controlling pollution spills in watercourses
• Creating a reserve to enable high volume pumping
• Use as a cofferdam in small rivers or streams

• Can be converted to a flood barrier by adding a ballast
• Quick
• Economical
• Works on various surfaces
• Environmentally-friendly
• Reusable

Water-Gate flexible cofferdams are used by contractors and site managers for their efficiency, simplicity and versatility.

Use to create areas to repair structures, underpinning, reinforce river supports, repointing, restoring ecological continuity, removing log jams, renovating bank, draining feeder canals, etc.

Works in water – rivers – canals – ponds. WA Water-Gates can be used in a variety of situations. Uneven ground increases friction and thus the stability of the dam. Care is required when using the dam on muddy ground. On a concrete surface, we recommend using the WL range of flexible cofferdams, rather than the WA range of cofferdams. On a sandy surface, you must bury the leading edge to limits the effects of piping erosion.

Overflow Diverter Tunnel

Traditionally, sandbags have been used in streams to create a dry working area. When the water flow is blocked by the dam, the water level rises, and a pump is required to ‘over-pump’ the water downstream, past the dam. With the Water-Gate, an overflow diverter tunnel can be used which replaces the need for over-pumping. The overflow pipe clips onto the top of the barrier allowing the water to be channelled downstream.

The overflow pipe has a max flow capacity of 90 litres per second (5400 litres per minute).

The kit consists of 2 main parts: the overflow diverter and the main tunnel.

• Cofferdam designed without ballast: the flexible leading edge fits perfectly over uneven surfaces
• Only for installation in standing water
• Deep ground sheet that facilitates pedestrian passage and safe pumping for chutes
• Limits the risk of erosion in the event of overflow, especially on sandy beds