A commission is created, to be known as the California Debris Commission, consisting of three members. The President of the United States shall, by and with the advice and consent of the Senate, appoint the commission from officers of the Corps of Engineers, United States Army. Vacancies occurring therein shall be filled in like manner. It shall have the authority, and exercise the powers set forth in sections 662 to 685 of this title, under the supervision of the Chief of Engineers and direction of the Secretary of the Army.