SRA End of Year Report 2015-16: Pioneer Dredging – low land carriers

Mark Yeo (near Tarnock)

Problem: Channel silt was limiting the conveyance capacity of the Mark Yeo (a main river) opposite residential properties. For 1km, significant silt depths worsened issues with excessive weed growth and de-oxygenated water in the channel.

Achieved: Approximately 2,000m3 of wet silt was removed from the channel by a tracked excavator and placed on adjacent land under the Water Resources Act (Section 167). The task was completed in November 2015 by Environment Agency Operations Teams (Wessex).

Hixham Rhyne (near Cheddar)

Problem: Significantly deep channel silt on the upper reach of the Hixham Rhyne towards Rodney Stoke Moor diminished the effectiveness of 2.2km of the main river channel in draining the moor.

Achieved: Approximately 4,400m3 of wet silt was removed from the channel by a tracked excavator and placed on adjacent land under the Water Resources Act (Section 167). The task was completed in November 2015 by Environment Agency Operations Teams (Wessex).

Haymoor Main Drain

Problem: Significantly deep silt deposits were reducing the conveyance capacity of Haymoor Main Drain, decreasing its effectiveness in transporting water towards Currymoor Pumping Station.

Achieved: Approximately 8,600m3 of wet silt was removed from 4.3km of channel with a tracked excavator and placed on adjacent land under the Water Resources Act (Section 167). The task was completed in March 2016 by Environment Agency Operations Teams (Wessex).

Tank Rhyne

Problem: Significantly deep silt deposits were reducing the conveyance capacity of Tank Rhyne, decreasing its effectiveness in transporting flow towards Currymoor Pumping Station. Spoil and rubble were also in the channel, following emergency repairs to a ring bank defence around a property next to Tank Rhyne.

Achieved: Approximately 520m3 of wet silt was removed with a tracked excavator and placed on adjacent land under the Water Resources Act (Section 167). The task was completed in March 2016 by Environment Agency Operations Teams (Wessex). Rubble removed from the channel has been re-used as crushed material in other construction projects in Somerset.

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