Waterrock Knob is a mountain peak in the U.S. state of North Carolina. It is the highest peak in the Plott Balsams and is the 16th-highest mountain in the Eastern United States. The mountain is a popular destination with tourists and amateur hikers, as it is easily accessible from the parkway. A visitors' center is located near its summit and a hiking trail leads to its top. The hiking trail and visitors' center are manned and maintained by the National Park Service, part of the United States Department of the Interior.