Where—
the appropriate agency or, as the case may be, that local authority may, in accordance with the provisions of a scheme made by it or them under this section, enter on the land and carry out such drainage works as appear to it or them desirable.
Subsection (1) above has effect in relation to land in Wales with the omission of the words "other than a district council".
Schedule 4 to this Act shall have effect with respect to the making of a scheme under this section.
A scheme under this section must state—
Subject to subsection (6) and (7) below, the amount stated in a scheme in pursuance of subsection (3)(c) above shall not exceed an amount equal to £50 for each hectare in the area to be improved.
The following expenses, that is to say-
shall, according to the apportionment provided for by the scheme, be recoverable by the appropriate agency or that authority from the several owners of the lands to which the scheme relates.
Each of the Ministers shall have power to exempt a scheme from the limit imposed by subsection (4) above if it appears to him that the works proposed to be carried out are urgently required in the public interest.
Each of the Ministers shall have power by order made by statutory instrument from time to time to vary the limit imposed by subsection (4) above; but no such order shall have effect unless it is approved by a resolution of each House of Parliament.
A scheme made under this section shall be a local land charge.