Admission: Free.Event Details:August 20,21, 2016. Boat races, anything that floats race, lighted boat parade, kayak race and childrens activities. Plenty of food vendors, live entertainment and much more! Fireworks Sunday night.Beaver is a borough in and the county seat of Beaver County in the U.S. state of Pennsylvania. It is located at the confluence of the Beaver and Ohio Rivers, approximately 30 miles (48 km) northwest of Pittsburgh. As of the 2010 census, the borough population was 4,531. The borough is a Tree City USA community.