Channel habitat structures made of natural materialsE+W
15.—(1) The installation of channel habitat structures made of natural materials (excluding weirs and berms).
(2) For the purposes of this paragraph, the specific conditions are—
(a)the structure occupies no more than half the width of the cross-sectional area of the channel in the main river and no more than 20 metres of the length of the main river,
(b)no part of the structure is higher than 0.3 metres above the level of the river bed or 25% of the height of the bank (excluding any wall or embankment forming part of the bank), whichever is greater,
(c)the structure is made from naturally occurring woody material and is securely fastened to the bed of the main river, the bank or both,
(d)the works are not carried out in, or within 100 metres of, a water body in England that is part of a main river classified as of high morphological status by the Agency in accordance with the relevant directions, and
(e)no works take place within 100 metres of—
(i)a non-agricultural building in the floodplain,
(ii)another natural channel habitat structure,
(iii)stones or logs placed in the main river for habitat enhancement, or
(iv)a man-made structure on or in the main river.