European Water Chestnut is a highly invasive aquatic plant that has infested waterways in much of the Northeastern United States.


European water chestnut plant and seed pod.

European water chestnut plant and seed pod.

Learn More

The European water chestnut can cover water surfaces and cut off important nutrients for native plants and animals. There are currently 10 known infestations, affecting 7 different waterways within our watershed. Learn more about this aquatic invasive.

Current Projects

Volunteer with us to remove water chestnut from our local waterways this summer at two of the infestation sites!

Ruth Pond:  June 17, July 7 and 15  
Lake Delmont: July 28

Past Accomplishments

The European water chestnut was first discovered in our watershed in 2007. The Perkiomen Watershed Conservancy has been successfully managing infestations since 2009.  View the video above to see how the PWC and community volunteers remove this nasty invasive by hand.


Before and After - Volunteers removed 100% of European water chestnut plant coverage by hand from Ruth Pond in 2017.

Before and After - Volunteers removed 100% of European water chestnut plant coverage by hand from Ruth Pond in 2017.