Mert RiverThe River Mert ; anciently, the Lycastus is a river in Turkey which flows into the Black Sea at Samsun.HistoryThe ancient town of Lycastus in Pontus was located on the river; the site has not been located.PollutionA local politician claims the river suffers from domestic and industrial pollution, and fish die off in 2014 is being investigated by local officials.FloodingIn 2012 flooding killed 5 people.