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