Subject to subsections (2) and (3) below, an internal drainage board, with a view to improving the drainage of any land situated in their district, may enter into an arrangement with a navigation authority or conservancy authority for any of the following purposes, that is to say—
An internal drainage board shall not enter into any arrangement under this section in relation to a main river or the banks of a main river or in relation to any drainage works in connection with a main river.
The exercise by an internal drainage board of their power to enter into an arrangement under this section shall require the approval of the relevant Minister and the Secretary of State.
Where an internal drainage board are intending to enter into an arrangement under this section, they shall publish a notice of their intention in such manner as may be directed by the relevant Minister.
Where an arrangement has been made under this section, an internal drainage board shall cause a notice under subsection (6) below to be published in the London Gazette in such form as may be prescribed by regulations made by the relevant Minister.
A notice under this subsection is a notice—