The U.S. Aids To Navigation System has been adopted by the Commission for use on all Commonwealth waters. Boaters should learn this system and presume nothing. In the U.S. Aids To Navigation System, markers designate the edges of a channel and the direction of open water. The colors of these markers are important. To Navigation System have numbers on them that get larger as you continue upstream, beginning at the mouth and continuing toward the source.
Red markers have even numbers and green markers have odd numbers.
Information and Regulatory Markers are used to alert boaters of various warnings and regulatory matters. These regulatory markers are white can buoys with orange shapes and black lettering. All rights reserved. Use this link to send questions or comments about the Fish and Boat Commission, the content of our web pages and fishing and boating in Pennsylvania.