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 Federation League Imperial Federation League The Imperial Federation League was a 19th-century organisation which aimed to promote the reorganisation of the British Empire into an Imperial Federation. It was founded in London in 1884. Branches were established in Canada, Australia, New Zealand, Barbados and British Guiana. It aimed to promote the Imperial Federation, similar to how the majority of British North America confederated into the Dominion of Canada in the mid-19th century. The United States and Canada were concrete examples of how vast territories could be effectively managed while maintaining a central representative authority. While the proposal was often associated with segments