The All-American Canal brings water from the Colorado River at Imperial Dam to the farmland of the Imperial Valley. Three main canals, the East Highline, Central Main and Westside Main divert water from the All-American Canal and distribute to smaller lateral canals throughout the Imperial Valley. Farmers receive water directly from the lateral canals to irrigate nearly 500,000 acres of farmland within IID's water service boundaries. Another important component of IID's distribution system are the seven regulating reservoirs and four interceptor reservoirs that have a total storage capacity of more than 4,300 acre-feet of water.
