The Commissioner, by agreement with the owners of lands through which private waters flow or in which private waters lie, the same not being boatable waters, may close such waters, or parts thereof, against fishing and such waters while closed shall be considered closed waters. In the name of the State, the Commissioner may receive from the owners of such lands such deeds or writings as are necessary for this purpose. Such waters shall not thereafter during the term for which they are closed be included in private preserves or propagation farms. Notice that such waters are closed shall be given by notices posted conspicuously upon the banks or shores of such waters. (Added 1961, No. 119, § 1, eff. May 9, 1961.)