(1)The Corporation may—
(a)subject to the consent required by section 47 (Crown rights) of this Act, dredge, scour and cleanse the banks and bed of the impounded river;
(b)in connection with, or for the purposes of, the works, moor or anchor vessels temporarily in the river.
(2)No materials so dredged by the Corporation under subsection (1) above shall be deposited in tidal waters below the level of high water except in such places and in accordance with such conditions and restrictions as may be approved or prescribed by the Secretary of State.