CAP, the first one to lose

The Central Arizona Project (CAP) is a 336 mi (541 km) diversion canal in Arizona in the United States. The aqueduct diverts water from the Colorado River from Lake Havasu City near Parker into central and southern Arizona. The CAP is the largest and most expensive aqueduct system ever constructed in the United States. And it is the single biggest consumer of energy in the whole state. Without it Phoenix would not have been able to grow to its current size of 1,5 million residents.