Colorado River Experts Demand Permanent Agricultural Water Cuts

Agriculture won’t just use less water next year. It will use less forever.

That is the hard truth Colorado River experts are finally shouting over the din of political maneuvering. For decades, we’ve treated water conservation as a temporary fix — a drought response, a summer restriction, a short-term sacrifice. The new consensus among the basin’s top scientists is that this approach is dead wrong. Permanent cuts are the only thing that stops the river from collapsing.

And agriculture has to pay the price.

A 2024 study by Colorado River scientists puts the number at 74%. That is the portion of human water use in the basin attributed to agriculture. Cities have already done their part. They’ve added residents while shrinking their footprints. They proved that population growth doesn’t have to mean a water bill spike. But urban conservation alone cannot save the system. You cannot shrink the suburbs enough to fill the gap left by the fields.

Anne Castle, a former federal representative to the Upper Colorado River Commission and lead author on a critical June paper, says the time for half-measures is over.

“I think we need to have permanent reductions in use on the table and agriculture will have to be part of that,” Castle said.

Castle and her colleagues — colloquially known as the "Traveling Wilburys" of hydrology because they’re a tight-knit group of experts who move together, aren’t guessing. They are warning of a system crash. Another dry winter would deplete remaining storage. The result would be run-of-the-river operations. That means the nation’s two largest reservoirs, Lake Powell and Lake Mead, would release downstream only what flows in. No surplus. No buffer. Just a direct pass-through until levels hit deadpool. That’s when the water gets too low to release at all.

The clock is ticking. Spring flows into Lake Powell this year are projected to be the lowest on record. We just survived one of the hottest and driest winters since measuring began. The seven states sharing the river are under increasing pressure. The Inflation Reduction Act poured $4 billion into drought mitigation, but most of that money went to short-term conservation. In the Lower Basin, water users were paid to temporarily leave water in Lake Mead. In the Upper Basin, similar temporary deals were struck.

Temporary deals don’t fix a structural deficit.

Water managers from both basins know this, which is why they’ve resisted the idea of drying up land. Most conservation programs to date allowed saved water to be used elsewhere or were strictly time-limited. But Castle argues that the people whose livelihoods depend on those fields are understandably resistant to permanent reductions. They shouldn’t be blamed. They are fighting for their survival.

“The folks who are vulnerable to those kinds of permanent reductions are understandably resistant,” Castle said. “But there’s not enough water. The river won’t allow us to use the same amount of water that we’ve been accustomed to using in the past.”

The short version: The river is shrinking. The users aren’t. The math doesn’t work unless the users shrink.

Locals in the Western Slope watch these negotiations closely. We see the water turn into money at the farmers' markets. We see it turn into power at the hydroelectric plants. But we rarely see it disappear into the soil, evaporating under the sun for crops that might not even be needed next year. The experts say the river won’t allow business as usual. It’s not a suggestion. It’s a physical limit.

The question isn’t if agriculture will cut back. It’s how much land goes fallow before the reservoirs hit deadpool.