http://www.legislation.gov.uk/ukpga/1976/70/part/II/1991-02-01Land Drainage Act 1976An Act to consolidate certain enactments relating to land drainage.1979-01-31texttext/xmlenStatute Law Database2015-01-301991-02-01Part II Powers of Drainage Authorities Carrying out drainage works, etc.17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F1 Drainage works concerning more than one drainage authority20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F221. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F3 Arrangements with other persons and powers as respects the obligations and rights of other persons22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F4 Control of obstructions in and structures in, over or under watercourses28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F5 Schemes for drainage of small areas30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F6 Flood warning systems32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F7 Incidental powers33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F8