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Imperial Reservoir
Imperial Diversion Dam and Reservoir complex in 1972
Imperial ReservoirShow map of CaliforniaImperial ReservoirShow map of the United States
Location	Lower Colorado River Valley Imperial County, California Yuma County, Arizona
Coordinates	32°53′00″N 114°28′04″W / 32.8833°N 114.4677°W / 32.8833; -114.4677
Lake type	Reservoir
Primary inflows	Colorado River
Primary outflows	Colorado River
Catchment area	5,756 acres (2,329 ha)
Basin countries	United States
Managing agency	United States Bureau of Reclamation
Surface area	28 km (11 sq mi)
Water volume	160,000 acre⋅ft (200,000,000 m)
Surface elevation	56 m (184 ft)
References	U.S. Geological Survey Geographic Names Information System: 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. It is 16 miles (26 km) northeast of Yuma, Arizona.

Dry wash watersheds

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.

The Senator Wash flows eastward from California into the reservoir. The Wash is blocked by Senator Wash Dam to form the Senator Wash Reservoir, which provides more storage for the canals.

Recreation

The Bureau of Land Management operates camping sites on the north and south shores of Senator Wash and at Xanyō Xamshré (a backwater of the river). It also operates a long-term campsite below the dam. Hidden Shores, a BLM concessionaire, is located on the east shore of the Imperial Reservoir.

See also

• List of dams and reservoirs in California
• List of lakes of the Colorado Desert
• List of lakes in California

References

1. "How's My Waterway?". December 6, 2021.
2. https://www.iid.com/water/water-transportation-system/colorado-river-facilities/senator-wash
3. "Senator Wash North Shore | Bureau of Land Management".
4. "Senator Wash South Shore | Bureau of Land Management".
5. "T.K. Jones Campground and Boat Launch | Bureau of Land Management".
6. "Imperial Dam Long Term Visitor Area | Bureau of Land Management".
7. https://www.hiddenshores.com/

• "Imperial Diversion, California". FindLakes. 2009. Archived from the original on July 26, 2011. Retrieved September 22, 2009.
• Bureau of Reclamation (June 29, 2009). "Imperial Diversion Dam". U.S. Department of the Interior. Archived from the original on June 14, 2011. Retrieved September 22, 2009.

External links

• Imperial Reservoir Watershed Map
• U.S. Geological Survey Geographic Names Information System: Imperial Reservoir

v t e Colorado River system
Jurisdictions	United States Arizona California Colorado Nevada New Mexico Utah Wyoming Mexico Baja California Sonora
Canyons	Byers Canyon Gore Canyon Red Gorge Glenwood Canyon De Beque Canyon Horsethief Canyon Ruby Canyon Westwater Canyon Cataract Canyon Narrow Canyon Glen Canyon Grand Canyon Marble Canyon Granite Gorge Middle Granite Gorge Lower Granite Gorge Grand Wash Canyon Iceberg Canyon Virgin Canyon Boulder Canyon Black Canyon Pyramid Canyon Mohave Canyon
Natural features	River course Rocky Mountains Colorado River Basin Colorado Plateau Grand Lake Horseshoe Bend Sonoran Desert Mojave Desert Lower Colorado River Valley Mohave Valley Parker Valley Palo Verde Valley Colorado Desert Alamo River New River Salton Sea Imperial Valley Delta Montague Island Gulf of California/Sea of Cortez
Tributaries	Blue River Dirty Devil River Dolores River Escalante River Eagle River Fraser River Gila River Green River Gunnison River Kanab Creek Little Colorado River Paria River Roaring Fork River San Juan River Thunder River/Tapeats Creek Virgin River Las Vegas Wash Williams Fork Río Hardy
Engineering	Mainstem dams Shadow Mountain Granby Windy Gap Grand Valley Price-Stubb Glen Canyon Hoover Davis Parker Headgate Rock Palo Verde Imperial Laguna Morelos Major reservoirs Fontenelle Reservoir Flaming Gorge Reservoir Blue Mesa Reservoir Navajo Lake Lake Powell Lake Mead Lake Mohave Lake Havasu Imperial Reservoir Theodore Roosevelt Lake San Carlos Lake Aqueducts and canals Grand Ditch Colorado River Aqueduct San Diego Aqueduct Central Arizona Project All-American Canal Alamo Canal Coachella Canal Water projects Boulder Canyon Project Colorado–Big Thompson Project Colorado River Storage Project Grand Valley AVA Yuma Project
Designated areas	Arches National Park Canyonlands National Park Colorado National Monument Dead Horse Point State Park Glen Canyon National Recreation Area Grand Canyon National Park Lake Mead National Recreation Area Rocky Mountain National Park
Related topics	Arizona v. California Colorado River Board of California Colorado River Compact Floyd Dominy Lee's Ferry International Boundary and Water Commission Metropolitan Water District of Southern California Rapids and features U.S. Bureau of Reclamation William Mulholland

• Reservoirs in Yuma County, Arizona
• National Wildlife Refuges in Arizona
• Reservoirs in Imperial County, California
• Colorado River
• Reservoirs in California
• Reservoirs in Arizona
• Reservoirs in Southern California