March 5, 2024
The Chicago River is perhaps one of the most famous examples of a river that was engineered to flow backward. In the late 19th century, the direction of the river was reversed to prevent contamination of the city's drinking water supply from sewage and pollution.
During the 1953 North Sea flood, the Thames River temporarily flowed backward due to the high tidal surge pushing water upstream.
The Amu Darya, one of the largest rivers in Central Asia, has experienced backward flow during periods of intense flooding or seismic activity in the region.
The Sag River, located in Alaska, has been known to reverse its flow during periods of extreme storm surges or ice jams.
The Platte River in Nebraska has occasionally reversed its flow due to ice jams during winter or severe flooding events.