. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where, in accordance with the provisions contained in a licence in pursuance of paragraph (b) of subsection (2) of section 46 above, or in pursuance of that paragraph as read with subsection (6) of that section, it has been determined what quantity of water is to be taken—
to have been abstracted during any period from a source of supply by the holder of the licence; or
to have been so abstracted at a particular point or by particular means, or for use for particular purposes,
that determination shall, for the purposes of any proceedings under Chapter II of Part II of this Act or any of the related water resources provisions, be conclusive evidence of the matters to which it relates.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .