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
Halifax River total area covered is 1008.3 km². Water flows south for a distance of . The Halifax River merges with Spruce Creek and the Mosquito Lagoon just before it connects to the Atlantic Ocean via the Ponce de Leon Inlet. The Halifax River runs through the cities of Ormond Beach, and Daytona Beach. It also runs next to the Jackie Robinson Ballpark on City Island and the Ponce de Leon Inlet Lighthouse. The Halifax Harbor Marina is located on the waterway as well. The Halifax River runs through two cities, and past four cities and one town, and was used to