The Hyder Valley is a 20 mile (32 km) long valley section of the Gila River Valley

Gila River Valley

The Gila River Valley is a multi-sectioned valley of the Gila River, mostly in Arizona. The Gila River forms in western New Mexico and flows west across southern-eastern, south-central, and southwestern Arizona; it changes directions across the state, and defines specific areas and valleys...

 at Hyder

Hyder, Arizona

Hyder is a ghost town and farming community in Yuma County, Arizona, United States. It and surrounding areas houses several different types of fish, shrimp, and other types of farms, one school , and two gas stations/general markets...

 on the Gila River

Gila River

The Gila River is a tributary of the Colorado River, 650 miles long, in the southwestern states of New Mexico and Arizona.-Description:...

. The valley is located north of Gila River in southwest Arizona

Arizona

Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

 in the northwestern Sonoran Desert

Sonoran Desert

The Sonoran Desert is a North American desert which straddles part of the United States-Mexico border and covers large parts of the U.S. states of Arizona and California and the northwest Mexican states of Sonora, Baja California, and Baja California Sur. It is one of the largest and hottest...

. The Park Valley

Park Valley (Arizona)

The Park Valley of Arizona is a small, northwest by southeast trending valley centered on the Gila River in central-east Yuma County. The southeast border of the valley is the northern Sentinel Plain of Maricopa County which drains northwestwards toward the Gila River Valley.Interstate 8 is on the...

, which crosses the Gila borders to the southwest; the Hyder Valley is the access route to the Dendora Valley

Dendora Valley

The Dendora Valley is a small valley on the Gila River west of Painted Rock Dam and Reservoir. The valley is north of the river, and is the valley west of the north-south Painted Rock Mountains which form the western end of the Painted Rock Reservoir....

 northeast which is on the western border of the Painted Rock Dam and Reservoir.

The Hyder Valley lies on the northwest side of the Gila River, and both trend southwest-northeast. The Palomas Mountains are on the west, and the Palomas Plain, which drains three other mountain ranges, and the eastern portion of the Kofa National Wildlife Refuge

Kofa National Wildlife Refuge

The Kofa National Wildlife Refuge is located northeast of Yuma, Arizona, southeast of Quartzsite, Arizona, in the southwestern United States. The refuge, established in 1939 to protect Desert Bighorn Sheep, encompasses over of the Yuma Desert region of the Sonoran Desert...

, lies to the north; Face Mountain and the Gila Bend Mountains

Gila Bend Mountains

The Gila Bend Mountains are a 35-mile long mountain range of the north-central Sonoran Desert southwest of Phoenix, Arizona and in southwest Maricopa County....

 are northeast. On the south side of the Gila River, to the southeast lies the Sentinel Plain

Sentinel Plain

The Sentinel Plain is an extensive northwest-southeast trending plain south of the Gila River Valley in southwestern Arizona, USA. It is centered on the community of Sentinel, Arizona located on Interstate 8, approximately west of Gila Bend....

.