The City shall embrace the territory constituting the City of Howell, on the effective date of this Charter, together with such annexations thereto and less any detachments therefrom that may be made from time to time. Upon annexation or detachment of territory, the boundaries shall be deemed thereby to be changed without amendment of this section. The Clerk shall maintain and keep available in his office for public inspection and distribution an official description of the current boundaries of the City.