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 House of Japan family has been supported by an official civil list sanctioned by the Japanese government. When Emperor Hirohito passed away, he left a personal fortune of £11 million in 1989. In 2017, Emperor Akihito had an estimated net worth of US$40 million. Currently the primary imperial properties are the Tokyo Imperial Palace and the Kyoto Imperial Palace. The estimated landholdings is . The Tōgū Palace is located in the larger Akasaka Estate where numerous other imperial family members reside. There are privately used imperial villas in Hayama, Nasu and the Suzaki Imperial Villa in Shimoda. The Katsura Imperial Villa, Shugakuin Imperial