Join park staff and Penn State Master Watershed Stewards for a volunteer work day on the water. Learn about the aquatic invasives you can find in Lake Wilhelm. Then, bit by bit, we will pull European Frogbit to make a difference. Ages 12 and up, under 18 must be accompanied by an adult. Kayak and gear provided or bring your own. Life jackets required to be worn. Registration is required, please call the office to register at (724) 253-4833 or email megmcdowel@pa.gov.