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Alliance Crayfish Corps

Work alongside Park staff to remove invasive rusty crayfish that invaded Valley Creek in 2008. The rusty crayfish is bigger, more aggressive, and eats up to twice as much as native crayfish in Valley Creek. Long-term goal is to maintain a ratio of one rusty crayfish or less for every four native crayfish present in Valley Creek.

Join us for a splashy morning of learning fun and making a difference at Valley Forge National Historical Park. All participants receive Crayfish Corps buttons. Location will be determined prior to the event. Closed-toe water shoes required. Please email for more information and to register. Limit 25 participants. Event will be cancelled in case of rain and/or lightening or high stream flow.