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