The Colorado River Basin is facing another warning sign, as experts suggest that another dry winter could push the system closer to a serious storage crash. Recent reports indicate that the river’s future is being shaped by shrinking reservoir levels, uncertain runoff, growing demand, city-level water planning, and the need for better information about who depends on the river and how much water is actually available.
Inside Climate News reported that Colorado River experts are warning of “devastating consequences” if the Basin experiences another dry winter. The warning comes after record-low snowpack across parts of the Colorado River Basin and continued low water levels at Lake Powell. According to the report, if the 2027 water year looks similar to one of the driest years since 2000, the system could overuse the river’s natural flow by millions of acre-feet, putting Lake Mead and Lake Powell dangerously close to critical operating levels.
That matters because Lake Mead and Lake Powell are not just large reservoirs. They are the main storage system for the Colorado River. They help move water downstream, support hydropower generation, protect against dry years, and serve cities, farms, tribes, ecosystems, and industries throughout the West. If those reservoirs continue to fall, the river system becomes harder to manage, and federal agencies may have fewer options to protect both water deliveries and infrastructure.
Experts also warned that even a wet winter would not fully solve the problem. A strong snow year could temporarily refill part of the system, but without long-term reductions in water use, the reservoirs could return to today’s low levels within a short period of time. This shows that the Colorado River crisis is not only about one dry year or one bad snowpack. It is about a long-term imbalance between how much water the river produces and how much water the region has planned to use.
As Arizona cities get ready for less Colorado River water, a heads-up is in order. The Arizona Municipal Water Users Association mentioned that while the final call hasn’t been made, the federal government suggests that Arizona, California, and Nevada might need to use a lot less Colorado River water to keep the river’s infrastructure safe from getting worse. AMWUA pointed out that Arizona might be hit first because the Central Arizona Project, which brings Colorado River water to Phoenix and Tucson, gets priority lower than other users.
For Phoenix-area cities, this means we can’t just rely on the Colorado River to always have enough water. AMWUA said cities are already stepping up by investing in long-term water security, conservation, and infrastructure. The takeaway is clear: a river shortage doesn’t automatically mean a tap shortage, but to avoid that, we need to plan, invest, and get everyone involved.
Other Arizona communities are also figuring out what less water might mean for them. San Tan Sun News reported that Chandler is looking at how reduced water supplies could affect them. This kind of local planning is becoming more crucial as cities across Arizona get ready for a future where Colorado River deliveries might be smaller, cost more, or less dependable. Water cuts that used to seem far off are now being talked about in city budgets, plans for buildings, and conservation efforts.
Water managers and reporters are also starting to question some of the standard figures we hear about the Colorado River. KNAU mentioned that the common estimate of nearly 40 million people depending on the Colorado River might not be spot-on. Water policy experts pointed out that it’s tough to pin down the exact number because people use the term “Colorado River water” in different ways. Some only count the main river, while others include tributaries, groundwater, service areas, and growing communities in Mexico.
This uncertainty is important because how many people there are can affect who has the power, how much money gets allocated, and how everyone understands the situation. If decision-makers don’t have clear numbers on how many people use the river, how much water they’re using, and how much farmland depends on it, it becomes harder to make fair and accurate choices. KNAU also noted that tribal water rights add another layer of uncertainty because some tribal rights in the Basin aren’t recognized or measured.
Water quality is also a key part of Arizona’s water discussion. Arizona’s Family reported that Gov. Katie Hobbs signed a water quality bill as nitrates keep being a problem in the waterways. While this is separate from planning for the Colorado River shortage, it shows that Arizona’s water issues aren’t just about having enough water. Communities need to also take care of water quality, treatment, infrastructure, and public health as the pressure on water systems gets higher.
Weather is another thing to keep an eye on as Arizona gets ready for summer heat and the monsoon season. Triple-digit temperatures make us use more water, especially for homes, gardens, and outside activities. While summer storms can give us a little break, they don’t replace the need for winter snowpack in the Rocky Mountains, which is what feeds most of the Colorado River system. Short bursts of rain might help local conditions, but they can’t fully fill Lake Mead and Lake Powell or fix the long-term shortage problems.
These reports paint a concerning picture of the Colorado River system, indicating ongoing stress. Experts are sounding alarms that another dry winter could push storage levels dangerously close to a crisis. Arizona cities are gearing up for less Colorado River water, and local governments are taking stock of potential impacts. Water managers are also questioning whether the public fully understands who depends on the river and how much water is actually available. At the same time, water quality and summer demand add to the pressure on an already strained system.
The Colorado River crisis is evolving beyond just future negotiations. It’s already influencing city planning, risk assessment, community growth discussions, and state water management strategies. The coming years will be crucial as the Basin works on new operating rules and decides how to manage a river that can no longer meet all demands.
What does this mean for CRIT?
CRIT’s senior Colorado River rights give the Tribe a strong and important position, but the broader Basin conversation also underscores why those rights must remain prominent as states, cities, and federal agencies prepare for reduced water. When Arizona cities plan for lower supplies and water managers discuss the number of people relying on the river, tribal water rights and tribal communities cannot be overlooked.
Sources
KNAU Arizona Public Radio
https://www.knau.org/knau-and-arizona-news/2026-06-01/about-40-million-people-use-water-from-the-colorado-river-right
Article link: San Tan Sun News, “Chandler assesses possible impact of less water.”
https://www.chandlernews.com/santan/news/chandler-assesses-possible-impact-of-less-water/article_77eae527-eb80-4d3e-9517-6d295b0edcb3.html
Article link: AMWUA, “Colorado River Shortage: Preparing for Less.”
https://www.amwua.org/blog/colorado-river-shortage-preparing-for-less
Article link: CBS 5 Arizona’s Family, “Governor signs water quality bill.”
https://www.azfamily.com/video/2026/06/02/governor-signs-water-quality-bill/
Article link: KTAR News, “Phoenix settles into triple-digit territory as monsoon season grows near.”
https://ktar.com/arizona-weather-news/monsoon-triple-digit-phoenix/5875775/
Article link: Inside Climate News, “Colorado River Faces ‘Devastating Consequences’ If Another Dry Winter Lands, Experts Warn.”
https://insideclimatenews.org/news/02062026/colorado-river-reservoir-water-shortage-after-winter-drought/