15. June 2026

Data Centers Without Increasing Colorado River Depletion

The Colorado River is overdrawn by 3 to 4 million acre-feet every year. Yet new demand continues to arrive, including data centers.

A large data center consumes water directly through cooling and to a much larger degree indirectly through the electricity it uses. In the Southwestern energy mix, power generation consumes roughly 300 gallons of water per megawatt-hour. At scale, the footprint reaches millions of gallons per day.
The question is whether new demand can be added without increasing total basin consumption.

The answer is yes.

Alfalfa consumes about 8 acre-feet of water per acre annually in the desert. Spineless Opuntia produces feed on the same land using about 1.6 acre-feet, reducing water consumption by 80 percent while keeping the land in agricultural production.

The difference, 6.4 acre-feet per acre, roughly 2.1 million gallons per year, never has to be diverted from the river in the first place. A large data center reaches water neutrality at roughly 1,000 converted acres, where retired consumptive use equals new demand.

The same principle applies to both new and existing water consumption. Las Vegas, despite operating one of the world's most advanced water recycling systems, still withdraws more water from the Colorado River than it returns. Converting approximately 31,000 acres of alfalfa to spineless Opuntia would offset that entire residual depletion.

Unlike fallowing programs, this approach strengthens agriculture. The fields remain productive, livestock feed continues to be produced, and farmers gain additional revenue through biomethane and biomethanol production from the same crop.

No fallowed fields. No abandoned farming.

Water neutrality is only the first step. Additional conversion reduces the Colorado River's deficit itself while strengthening rural economies.

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