Statutory guidance

SR2015 No 27: constructing an outfall pipe of 300mm to 500mm diameter

Standard rules for constructing an outfall pipe of 300mm to 500mm diameter through a headwall into a main river.

Documents

SR2015 No 27: constructing an outfall pipe of 300mm to 500mm diameter

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Generic risk assessment for SR2015 No 27

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Details

These rules allow you to construct an outfall pipe of no more than 500 millimetres diameter through a headwall affecting no more than 1.5 metres of the river bank on a main river.

If the diameter of the outfall is less than 300mm you may be able to register an exemption.

These rules do not allow you to construct outfalls on or within:

  • 8 metres of a flood defence
  • 50 metres of a manmade structure in, under or over the watercourse

You must not carry out these activities during the fish breeding season.

Published 6 April 2016