Join us as we celebrate RiverDay in Cuyahoga Valley National Park! On May 20, volunteers will plant native trees within the Cuyahoga River Watershed. Trees help prevent flooding, stream bank erosion, widening of streams, sediment deposited in streams, a loss of fish habitat, and decline in water quality. For individuals, families and small groups register here. For groups of 5 or more, please contact the volunteer office at 330.657.2299 or email firstname.lastname@example.org to register.