the Black Mountains (Arizona); the Sacramento Wash turns due west, and follows Interstate 40 in Arizona as it turns west and parallels the wash to meet Needles at the Colorado River; it is also the southern drainage outfall point into the Topock Marsh, at Topock, eastern shore of the Colorado River, in the southeast valley. Other washes drain through the eastern Mohave Valley plains and foothills into the Topock Marsh from the southwest of the Black Mountains, the extensive range which goes north to Lake Mead. Nevada, Piute Wash & Valley-(northwest) While in Arizona the Sacramento Wash drains the Sacramento Valley southwest of Kingman, in Nevada the Piute Wash drains the Piute Valley of southeast Nevada. A separate drainage lies between them on the Colorado River, the Havasu-Mohave Lakes Drainage. These three drainages, the west, center, and east all drain into the Mohave Valley region. See also Boundary Cone References External links Mohave Valley area map; Mohave Valley, Colorado River, Bullhead City, AZ, Meedles, CA, Warm Springs Wilderness, Sacramento Valley, Whipple Mountains; from: Warm Springs Wilderness at Public Lands Watersheds Havasu-Mohave Lakes Watershed Piute Wash Watershed, Nevada to California Sacramento Wash Watershed, in Sacramento Valley (northwest Arizona) Valleys of the Mojave Desert Valleys of the Lower Colorado River Valley Valleys of Arizona Valleys of California Valleys of Nevada Landforms of Mohave County, Arizona Valleys of San Bernardino County, California Valleys of Clark County, Nevada