 The natural outlet of Portage Lake was located about a mile north of the present-man made outlet.This stream ran northwesterly from the Portage Lake side (close to and crossing the section lines between sections 21 and 28) the present-day intersection of Ridge Avenue and Portage Point Drive, north along Norwood Avenue to cross Lakeisle Avenue and then to pass into Lake Michigan just north of the intersection of Lakeisle and Lakeside Avenue are located, almost exactly on the section line separating sections 28 and 33.It was recognized very early as an excellent site for a waterpowered saw mill.