Upper Cabin John Creek encompasses the area beginning at a point, at or near Lat. 39° 27.528’ N., Long. 75° 56.975’ W., then running 123° (True) to a point, at or near Lat. 39° 27.407’ N., Long. 75° 56.732’ W., then running 192° (True) to a point, at or near Lat. 39° 27.258’ N., Long. 75° 56.773’ W., and running to the head of the creek. This area has a minimum wake zone all year.