71.—(1) In this Part—
“Agency” means the Environment Agency;
“Byelaws” means the byelaws set out in the Wessex Water Authority Land Drainage Byelaws 1981 that are not disapplied by Schedule 16 (amendment of local legislation);
“consented work” means a work that is required to be consented under the terms of the Water Resources Act 1991(1), the Land Drainage Act 1991(2) or the Byelaws, irrespective of any status as a statutory undertaker under those provisions;
“drainage work” means any watercourse and includes any land which provides or is expected to provide flood storage capacity for any watercourse and any bank, wall, embankment, outfall or other structure, or any appliance, constructed or used for land drainage, flood defence or tidal monitoring;
“flood defence structure” means any valve, sluice, clyse, hatch, flashboard, flood gate, lasher, staunch gates, paddle, penstock, lock, weir, dam, pumping machinery, pump, pipe or other structure or appliance for controlling, measuring or regulating the level of water or the flow of water into, in or out of a main river or for drawing water from or delivering water into a main river.
(2) A reference in article 47(2) (amendment of local legislation) to a “structure” is to be taken, for the purposes of that article, to be a flood defence structure if it is of the nature identified in sub-paragraph (1).