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 Knight own "Ritterhauptmann" or Captain and kept detailed records of noble families and properties. The Imperial Knights were exempt from imperial taxes and were not required to quarter troops. Over time the title of Imperial Knight became a title of nobility rather than occupation. Many Imperial Knights even as early as the 16th century are more famous for their scholarly, artistic, or diplomatic work than their military achievements. During the demise of the Holy Roman Empire in 1803, the Knights' estates, which were generally enclaves, were seized by the great territorial states like Bavaria and Württemberg in the so-called "Rittersturm". In