Manzanares (river) protected as the "Parque Regional de la Cuenca Alta del Manzanares", a nature reserve which is recognised as a biosphere reserve by UNESCO. The Manzanares flows in a south-eastern direction from its source, and passes through the medieval town of Manzanares el Real where it is dammed to form the Santillana reservoir, one of the most important water supplies for the capital. The river then takes a southern direction and enters the Monte del Pardo, an ecologically valuable area on the edge of Madrid. The river is canalised where it passes through the built-up areas of the city. As at
Chattooga River running along the state line. The East Fork Chattooga River (sometimes East Prong Chattooga River) runs in from Jackson County, North Carolina and then Oconee County, South Carolina, and is long. The West Fork Chattooga River (variant name Gumekoloke Creek) runs in from Rabun County, Georgia, and is also a variant name for that county's Holcomb Creek, one of its own tributaries. One of the largest tributaries in the Chattooga basin that flows mainly through private lands is Stekoa Creek, which flows primarily southeast for approximately from its headwaters in Mountain City, Georgia, through Clayton, Georgia, to its mouth at