Paragraph 6

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