Rivers and Foreshores Improvement Act 1948.
The construction, operation and maintenance of works for the removal of obstructions, improvement of rivers and foreshores and the prevention of erosion of lands by tidal and non-tidal waters shall be approved by the Marine Ministerial Holding Corporation and carried out by the Constructing Authority. For the purpose of constructing works for the improvement of rivers and foreshores, any lands may be constituted as River and/or Foreshore Improvement Districts by the Ministerial Corporation.