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TheParker Valley is located along the LowerColorado River within theLower Colorado River Valley region, in southwesternArizona and southeasternCalifornia.
Its natural habitats are within theSonoran Desert (Arizona) andColorado Desert (California) ecoregions.Riparian zonehabitats on the river includeMesquite Bosques. The river has supported irrigated agricultural conversion of the valley's landscape.
Three major drainages of the Colorado River enter in the Parker Valley region. TheBill Williams River andBouse Wash have confluences with the Colorado in the northern valley area, from watersheds on the east.Tyson Wash crosses the La Posa Plain and enters downstream, with its watershed east of the river in the Colorado River Indian Reservation.
In California, theVidal Valley and theWhipple Mountains border the Parker Valley on the northwest, and thePalo Verde Valley on the southwest. In Arizona theBuckskin Mountains border the valley on the north, theCactus Plain andDome Rock Mountains border it on the east.
Settlements within Parker Valley include:Parker andPoston in Arizona; andEarp andBig River in California.[1] It is at the northern area of theColorado River Indian Reservation on the Colorado River, and is also at the northern perimeter of theLa Posa Plain.[2]
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33°36′39″N114°31′09″W / 33.61083°N 114.51917°W /33.61083; -114.51917
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