Mandate Undertake on behalf of the national government, the development of national public water works for water resources storage and flood control;Maintain and manage national public water works infrastructure for water resources storage;Collect and provide information for the formulation by the Cabinet Secretary of the national water resources storage and flood control strategies;Develop a water harvesting policy and enforce water harvesting strategies:Undertake on behalf of the national government strategic water emergency interventions during drought;Advise the Cabinet Secretary on any matter concerning National public water works for water storage and flood control