Paragraph 21

Subject to paragraph 23, if by reason of the construction of any protective works or specified work or of the failure of any such work the efficiency of any drainage work for flood defence purposes is impaired, or that drainage work is otherwise damaged, such impairment or damage must be made good by the Company to the reasonable satisfaction of the drainage authority and if the Company fails to do so, the drainage authority may make good the same and recover from the Company the expense reasonably incurred by it in so doing.