NPS Photo Teri McMillan
Even in this remote park some rivers and lakes contain Giardia lamblia, or other intestinal parasites.
For your safety it is recommended that you drink only boiled, filtered or chemically treated water.
To protect the water quality, bathe and wash dishes at least 100 feet from sources of drinking water and use biodegradable soaps.
Go at least 200 yards from the water to use the restroom.
Did You Know?
Bob Marshall named Frigid Crags and Boreal Mountain "The Gates of the Arctic." These mountains are on the North Fork of the Koyukuk River.