The pair of signs shown below were taken on opposite sides of Stroop Road in Kettering, Ohio, just west of Ackerman Blvd. Rain that falls to the west of the signs will meander westerly to the Great Miami River and into the Ohio River at the Ohio/Indiana border. Raindrops that fall to the east will head easterly to the Little Miami River and flow into the Ohio River just south of Lunken Field. We live about a half-mile east of the signs, so our house is in the Little Miami Rivershed. Being so close to the dividing line explains why almost everything in any direction from our house is downhill. More Ohio river trivia can be found at these links.