Located about 20 miles north of Yuma, Arizona, the Imperial Dam serves as a diversion structure for water deliveries throughout southeastern California, Arizona and Mexico. The operations of IID's River Division Office at Imperial Dam are under the direction of the United States Bureau of Reclamation. Imperial Dam was a first for the irrigation world, where river water flows through one of three desilting basins before being released into the All-American Canal.
The Senator Wash facility acts as a regulating reservoir to balance the fluctuating flow and delivery schedules at Imperial Dam. The reservoir is controlled by IID’s Water Dispatching Unit under the direction of the Yuma Area Office (USBR). It was constructed in the 1960s to balance the flow in the river at Imperial Dam. Originally constructed in the mid-60s to hold almost 14,000 acre-feet, in 2001, the reservoir was restricted to an elevation of 240.00 feet above sea level (approximately 9,000 acre-feet of storage).
Warren H. Brock Reservoir
The Warren H. Brock Reservoir is a Bureau of Reclamation Colorado River Storage facility that is located above AAC Drop 2. The reservoir is controlled by IID’s Water Dispatching Unit under the direction of the Yuma Area Office (USBR). The Brock Reservoir was constructed to capture excess water that would have flowed to Mexico unordered. The Brock Reservoir has two 4,000 acre-feet storage cells. The Brock Reservoir began service in 2010.
The All-American Canal is the Imperial Valley's lifeline from the Colorado River. It effectively delivers an annual entitlement of 3.1 million acre-feet of Colorado River water, less water transfer obligations to nine cities and 500,000 acres of agricultural lands throughout the Imperial Valley.