Parker Valley
Encyclopedia
Lower Colorado River Valley
The Lower Colorado River Valley is the river region of the lower Colorado River of the southwestern United States in North America that rises in the Rocky Mountains and has its outlet at the Colorado River Delta in the northern Sea of Cortez in northwestern Mexico, between the states of Baja...
Colorado River
Colorado River
The Colorado River , is a river in the Southwestern United States and northwestern Mexico, approximately long, draining a part of the arid regions on the western slope of the Rocky Mountains. The watershed of the Colorado River covers in parts of seven U.S. states and two Mexican states...
is located at Parker
Parker, Arizona
Parker is a town in and the county seat of La Paz County, Arizona, United States, on the Colorado River in Parker Valley. The population was 3,140 at the 2000 census.-History:...
, Arizona-Earp
Earp, California
Earp, California is an unincorporated townsite in San Bernardino County in the Sonoran Desert close to the California/Arizona state line at the Colorado River in Parker Valley....
, California, (valley center, north). It is at the northern area of the Colorado River Indian Reservation
Colorado River Indian Reservation
The Colorado River Indian Reservation is 189 miles west of Phoenix, Arizona, on highway 95. It lies in western La Paz County, Arizona, southeastern San Bernardino County, California, and northeastern Riverside County, California. It has a total land area of 432.22 sq mi , and most of it lies...
on the Colorado River, and is also at the northern perimeter of the La Posa Plain
La Posa Plain
The La Posa Plain is a wide, generally flat plain in western Arizona near the Colorado River and is on the west and northwest border of the Kofa National Wildlife Refuge. The plain lies to the east of the Colorado River Indian Reservation and east of the Dome Rock and Trigo Mountains. Quartzsite,...
. Poston
Poston, Arizona
Poston is a census-designated place in La Paz County, Arizona, United States, in Parker Valley. The population was 389 at the 2000 census....
, Arizona and Big River
Big River, California
Big River is a census-designated place in San Bernardino County, California, United States. The population was 1,327 at the 2010 census, up from 1,266 at the 2000 census.-Geography:...
, California are also located in the Parker Valley.
Three major drainages into the Colorado River enter in the Parker Valley region. The Bill Williams River
Bill Williams River
The Bill Williams River is a river in western-central Arizona in Mohave County; the river proper is the northern border of La Paz County which it drains in the north, as well as areas of far western Yavapai County...
and its drainage watersheds, and also the Bouse Wash
Bouse Wash
Bouse Wash is one of the larger eastern-bank dry washes that enter the Colorado River in western Arizona.Bouse Wash is located on the north end of the La Posa Plain and drains into the area along the Colorado River occupied by the Colorado River Indian Reservation, south of Parker, Arizona...
Drainage are in the north. The adjacent drainage from the south on the west side of the north-south La Posa Plain, is the Tyson Wash
Tyson Wash
Tyson Wash is one of the larger eastern-bank dry washes that enter the Colorado River in western Arizona. It drains the La Posa Plain south-to-north and is also coincident with the Plain, ....
Drainage. The Tyson drainage ends prior to entering the Colorado River, just east of the river in the Colorado River Indian Reservation.
In California the Vidal Valley
Vidal Valley
Vidal Valley is a 20 mile long valley in the far eastern Colorado Desert bordering the Colorado River. Most of the valley is in eastern San Bernardino County, California, but the outfall on the Colorado is in northeast Riverside County...
and the Whipple Mountains
Whipple Mountains
The Whipple Mountains, 'Avii Kur'utat in the Mojave language, are located in eastern San Bernardino County, California. They are directly west of the Colorado River, Parker Dam, and Lake Havasu; south of Needles, California; north of Parker, Arizona and Vidal, California; and northeast of Vidal...
border the Colorado River-Parker Valley on the north-northwest.