In this Part of this Schedule—

• “construction includes execution, placing, altering, replacing, relaying and removal; and “construct” and “constructed” must be construed accordingly;

• “drainage authority” means in relation to an ordinary watercourse, the drainage board concerned within the meaning of section 23 (prohibition on obstructions etc. in watercourses) of the Land Drainage Act 199183;

• “drainage work” means any ordinary watercourse and includes any bank, wall, embankment or other structure, or any appliance, constructed or used for land drainage or flood defence in connection with an ordinary watercourse which is the responsibility of the drainage authority;

• “ordinary watercourse” has the meaning given by section 72 (interpretation) of the Land Drainage Act 1991;

• “plans” includes any information reasonably required by the drainage authority including location details, grid references, sections, drawings, specifications, assessments and method statements;

• “specified work” means any of the following works carried out in relation to any ordinary watercourse—

  1. a

     erecting any mill dam, weir or other similar obstruction to the flow of the watercourse, or raising or otherwise altering any such obstruction;

  2. b

     the construction or alteration of a bridge or other structure;

  3. c

     erecting a culvert in the watercourse; or

  4. d

     altering a culvert in a manner that would be likely to affect the flow of the watercourse.