The Gila River is a 649-mile-long (1,044 km) tributary of the Colorado River flowing through New Mexico and Arizona in the United States. The river drains an arid watershed of nearly 60,000 square miles (160,000 km2) that lies mostly within the U.S., but also extends into northern Sonora, Mexico.
The river in the Gila Box Canyon in eastern Arizona
The McPhaul Suspension Bridge on a former section of US Route 95 spans the Gila between the Gila and Laguna ranges in Yuma County. The bridge is listed on the National Register of Historic Places.
The Gila River near Coolidge Dam in Arizona
This patch of desert south of Buckeye, Arizona, drains east and west from a minor drainage divide. When they flow, both sides flow to the Gila River.
The Gila Mountains of Yuma County are a 26-mile (42 km) long mountain range in southwestern Arizona in the northwest Sonoran Desert.
west flank of range-(~8-mi east) (viewed from east Yuma agriculture fields, note constant elevation-ridgeline, north range terminus)
View from west: central & northern regions of Gila Mountains (eastern flank of mountain range from Lower Gila River Valley with north end of Lechuguilla Desert)