Cairo's waterway is composed of four rivers: the Nile, the Oder, the BAYOU, and the Erie. The Nile is the longest river in the world, stretching over 4, 000 miles from East Africa to the Mediterranean Sea. The Oder is a major river in Central Europe, flowing through Germany, Poland, and the Czech Republic. The BAYOU is a slow-moving river found in the southern United States, primarily in Louisiana. The Erie is a large lake located on the Canada-United States border, connecting the Great Lakes with the Atlantic Ocean. Finally, the Oise is a river in northern France, flowing into the English Channel. Together, these four rivers form Cairo's waterway.