The International Executive Council (IEC), is the highest decision-making body of ICID. It is vested with the management of the affairs of the International Commission on Irrigation and Drainage. All matters of policy that may be initiated or sponsored by any member National Committee or Office Bearer or by the Management Board comes under its purview. It may itself initiate and determine or otherwise advise and lay down any policies, decisions pertaining to the matters of strategic importance. The Council will also consider what action, if any, need be taken on the recommendations or conclusions of the studies, experiments or discussions organized by the Commission. All matters affecting the executive or administrative functions and financial liabilities of ICID must come up before the Council and its decision shall be conclusive. The Central Office of ICID shall act as an instrument for carrying into effect all decisions taken by the Council.

he Council consists of Office Bearers and one duly appointed representative from each National Committee. The appointed representatives of the National Committees and the Office Bearers attending a meeting shall constitute the membership of the Council for that meeting. IEC meetings are held annually usually before the respective year's flagship event like ICID Congress and WIF. Annual IEC meeting is always preceded by the annual meeting of various technical working group/ task teams, and meetings of various work bodies such as PCSO, PCTA, PFC, etc.