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 amazon the northwest side of the mountain. A small population has been reintroduced in the Morne Trois Pitons National Park. Imperial amazons are found primarily in mountain rainforest, sometimes in elfin forest. They occur mostly at elevations of 600–1300 m above sea level. However, there have been reports of them at 150 to 300 meters in elevation because of food storage or foraging preferences. The imperial amazon is an endangered species. The number of birds has increased in the past few years; however, as of 2012, there were estimated to be only 250—350 individuals. There have been many efforts to help