Land Drainage Act 1991 (c Land DrainageAct 1991 (c. 59) 1991 Chapter c. 59 ARRANGEMENT OF SECTIONS Part I Internal Drainage BoardsConstitution etc. of boards 1. Internal drainage districts and boards. 2. Review of boundaries of internal drainage districts. 3. Schemes for reorganisation of internal drainage districts etc. 4. Powers to make the NRA a drainage board. 5. Transfer of functions etc. back from the NRA. 6. Schemes and orders under sections 3 to 5: compensation for loss of office. General provision with respect to functions of drainage boards 7. Supervision of drainage boards by the NRA. 8. Concurrent powers of NRA. 9. Default powers of the NRA. 10. Exercise of default powers by local authorities. 11. Arrangements between drainage authorities. Duties with respect to the environment and recreation 12. General environmental and recreational duties. 13. Environmental duties with respect to sites of special interest. Part II Provisions for facilitating or securing the Drai...