The Verde River is the north and northwestern watershed of the Salt River?Verde River Watershed that co-join and enter the Gila River at Phoenix, Arizona, located in the U.S. state of Arizona. It is approximately 170 mi (273.5 km) long and carries a mean flow of 1120 ft³/s (31.7 m³/s) at its mouth with the Salt River making it one of the largest perennial rivers within the state.