11. Dowsby Fen falls within the drainage area of the Black Sluice Internal Drainage Board. 12. The Land Drainage Act 1930 made provision for the creation of internal drainage boards. 13. Dogdyke falls within the drainage area of the Witham Third District Internal Drainage Board. 14. Tongue End falls within the drainage area of the Welland and Deepings Internal Drainage Board. 15. This is the responsibility of the South Holland Internal Drainage Board and the Environment Agency. 16. The area drained falls within the area of the Welland and Deepings Internal Drainage Board. 17. The Land Drainage Act of 1930 made provision for the creation of internal drainage boards. 18. Deeping Gate falls within the drainage area of the Welland and Deepings Internal Drainage Board. 19. Hop Pole falls within the drainage area of the Welland and Deepings Internal Drainage Board. 20. It was a small continental basin with internal drainage .
