Volunteers are needed for the annual Ohio River Sweep on June 15.
The riverbank cleanup extends the entire length of the Ohio River and its tributaries; starting from its origin in Pittsburgh to its end in Cairo, Ill., including over 3,000 miles of shoreline and many tributaries.
https://www.dailyindependent.com/news/volunteers-needed-for-ohio-river-sweep/article_c8771846-895b-11e9-9191-2725a833a706.html