Paragraph 22 WatercoursesI1

Work Nos. 1 and 1A must not commence until a scheme and programme (including timescale) for works proposed to any watercourse flowing under the authorised development has been submitted to and approved in writing by the relevant planning authority in consultation with, if relevant, the relevant lead local flood authority, the Environment Agency and the IDB. The scheme submitted for approval must include details of the proposed clearance and repair works together with proposals for any temporary obstructions within the watercourse and any over pumping or other proposals for the maintenance of flow during the works.

The works to a watercourse to which sub-paragraph (1) applies must be carried out and the watercourse subsequently reinstated in accordance with the approved scheme and programme.

Unless otherwise permitted under sub-paragraph (1), throughout the period of construction, all watercourses must be maintained so that the flow of water is not impaired or the drainage on to and from adjoining land rendered less effective.