As Lake Mead and Lake Powell levels inch closer to dead pool, states in the lower Colorado River basin are proposing more solutions that could lend to the reservoirs’ recoveries.
Required water cuts have already been implemented and increased in severity this year for Arizona and Nevada.
The ongoing dispute over Colorado River water comes down largely to math: How much water should each state and region lose as reservoir levels continue to decline?
California has one interpretation of how to divvy up the cuts, and six other states that depend on the river have a different formula.
The snowpack in the Sierra Nevada is the deepest it’s been in decades, but those storms that were a boon for Northern California won’t make much of a dent in the long-term water shortage for the Colorado River Basin — an essential source of supplies for Southern California.
In fact, the recent storms haven’t changed a view shared by many Southern California water managers: Don’t expect lakes Mead and Powell, the nation’s largest reservoirs, to fill up again anytime soon.
After a key deadline passed this week without an agreement on how to address the Colorado River’s crisis, California is now sharply at odds with six other states over how to take less water from the shrinking river.
Now that California has rejected a plan offered by the rest of the region, the state has entered a political tug-of-war with high stakes. So why has the state that uses the most Colorado River water decided to go it alone?
The seven states that depend on the Colorado River have missed a Jan. 31 federal deadline for reaching a regionwide consensus on how to sharply reduce water use, raising the likelihood of more friction as the West grapples with how to take less supplies from the shrinking river.
In a bid to sway the process after contentious negotiations reached an impasse, six of the seven states gave the federal government a last-minute proposal outlining possible water cuts to help prevent reservoirs from falling to dangerously low levels, presenting a unified front while leaving out California, which uses the single largest share of the river.
Six Western states that rely on water from the Colorado River have agreed on a model to dramatically cut water use in the basin, months after the federal government called for action and an initial deadline passed.
California — with the largest allocation of water from the river — is the lone holdout. Officials said the state would release its own plan.
Exposed to the beating sun and hot dry air, more than 10% of the water carried by the Colorado River evaporates, leaks or spills as the 1,450-mile (2,334-kilometer) powerhouse of the West flows through the region’s dams, reservoirs and open-air canals.
For decades, key stewards of the river have ignored the massive water loss, instead allocating Arizona, California, Nevada and Mexico their share of the river without subtracting what’s evaporated.
Fountains still shimmer opulently at casinos on the Las Vegas Strip, but lush carpets of grass are gradually disappearing along the streets of Sin City.
Despite its reputation for excess, the Mojave Desert metropolis has been factoring climate change into its water plans for years, declaring war on thirsty lawns, patrolling the streets for water wasters and preparing for worst-case scenarios on the Colorado River, which supplies 90% of the area’s water.
Just north of the California-Mexico border, the All-American Canal cuts across 80 miles of barren, dune-swept desert. Up to 200 feet wide and 20 feet deep, the canal delivers the single largest share of Colorado River water to the fertile farmlands of the Imperial Valley.
Northern California reservoirs and the Sierra snowpack were dramatically bolstered by the string of recent storms, and that’s good news for millions of people across the state.
Just not necessarily those who live in San Diego.
