Herring Creek encompasses all of the waters upstream of a line beginning at a point on the west shore, at or near Lat. 38°20.677’N., Long. 75°7.762’W., then running 77° (True) to a point on the east shore, at or near Lat. 38°20.705’N., Long. 75°7.613’W. This area has a 6-knot speed limit all year. Glen Riddle Basin encompasses all of the waters of Herring Creek upstream (west) of a line beginning at a point on the north shore of the Glen Riddle Basin entrance channel, at or near Lat. 38°20.859’N., Long. 75°7.796’W., then running 180° (True) to a point on the south shore of the entrance, at or near Lat. 38°20.801’N., Long. 75°7.795’W. This area has a 6-knot speed limit all year.