Section 280-B. County agency

The governing body may appoint or establish an
  officer,  board  or body, or may designate an existing officer, board or
  body, or public authority which possesses the express power  to  act  as
  such  an  agency,  to  act  as  a county hurricane protection, flood and
  shoreline erosion  control  agency  (hereinafter  referred  to  in  this
  article  as  the  "agency")  having the powers hereinafter prescribed in
  sections two hundred eighty-c, two  hundred  eighty-d  and  two  hundred
  eighty-e,  and  such  other powers and duties as the governing board may
  determine necessary to carry into effect the provisions of this article.
  Except in the case of  a  public  authority,  the  agency  may  also  be
  designated  as  the  administrative  head or body of any county district
  which may be established pursuant to the provisions of this article. All
  matters relating to the membership of such agency,  including,  but  not
  limited  to,  numbers,  method  of selection, tenure, qualifications and
  compensation, shall be determined by the governing body.