Parish Creek encompasses the area south of a line beginning at a point, at or near Lat. 38° 50.847' N., Long. 76° 30.410' W., then running 169° (True) to a point, at or near Lat. 38° 50.738' N., Long. 76° 30.383' W., and running to the head of the creek. This area has a 6-knot speed limit Saturdays, Sundays, and State holidays, all year.