Imperial Reservoir Imperial Reservoir The Imperial Reservoir is an artificial lake formed by the construction of the Imperial Diversion Dam across the Colorado River in the Lower Colorado River Valley of Imperial County, California, and Yuma County, Arizona. A component of the Imperial National Wildlife Refuge, the reservoir is northeast of Yuma, Arizona. Dry washes are the major watershed feed systems to Imperial Reservoir. The next upstream major watershed feeder is the Bill Williams River from western Arizona. Upstream on the Colorado River, the basic feeder watershed to Imperial Reservoir is the Havasu-Mojave Lakes Watershed, of Lake Havasu. Two dry wash watershed
Imperial (automobile) were often built as soon as the styling changed, and sold over a period of some years. All 1961 Imperial Crown Ghias wore the 1960 styling front and rear, for example, and all 10 Ghia built Imperial Crowns sold during the 1965 model year were 1964s with 1965 exterior styling, and consequently had pushbutton gearshifts. At about curb weight the 1957-65 Ghia built Imperial Crowns are the heaviest standard production cars sold by an American firm since the 1930s. Throughout her husband's term as U.S. President, Jacqueline Kennedy's personal car was a Ghia built 1961 Imperial Crown with 1960 model