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 Regalia where they were exhibited in the Katharinenkirche. In the Second World War they were stored for protection from air raids in the "Historischer Kunstbunker" () beneath Nuremberg Castle. In 1945 the imperial regalia were found there by US soldiers and were brought back in 1946 to the Hofburg in Vienna. Imperial Regalia The Imperial Regalia, also Imperial Insignia (in German "Reichskleinodien", "Reichsinsignien" or "Reichsschatz"), are regalia of the Holy Roman Emperor. The most important parts are the Imperial Crown, the Holy Lance and the Imperial Sword. Today they are kept at the Imperial Treasury in the Hofburg palace in Vienna,