Early reports showed the river’s challenges from several angles. The headwaters are drying out, and Arizona is pushing back against the federal government’s post-2026 river plan. Cities are using federal money to conserve and build local resilience. Farmers and rural communities are facing uncertainty. Tribal Nations are also raising concerns about groundwater projects and the long history of being left out of major water decisions.
KJZZ reported that warming temperatures are reducing base flow in streams that feed the Colorado River. Base flow is the water in streams that does not come directly from rainfall. Much of it comes from groundwater and snowmelt. A study published in Earth’s Future found that base flow in Western streams has been declining since 1950, and researchers projected that headwater streams could see 45% to 65% less base flow by the end of the century if warming continues.
That matters because the Colorado River depends on those smaller mountain streams before the water reaches Lake Powell, Lake Mead, or the Lower Basin. If streamflow comes earlier in the year or drops during dry months, water managers have less reliability when demand is highest.
At the same time, Arizona continued to challenge the federal government’s Final Environmental Impact Statement for future Colorado River operations. KJZZ reported that Arizona’s top water official, Tom Buschatzke, warned Reclamation that the federal plan could cause “catastrophic harm” to Arizona. The state argued that the plan does not provide enough certainty and could allow deep Lower Basin cuts without resolving the broader conflict between the Upper and Lower basins.
KTAR reported similar concerns from Sarah Porter, director of Arizona State University’s Kyl Center for Water Policy. Porter said the federal framework focuses on protecting infrastructure and hydropower but does not put the Basin on a path to stability. She said cities may be able to reduce some impacts through conservation and advanced water purification, but Tribal and rural communities could feel deeper disruption, especially where agriculture is involved.
Cities are already moving to conserve more water. KJZZ reported that several Phoenix-area cities are working on agreements with the Bureau of Reclamation to leave Colorado River water in Lake Mead in exchange for federal funding. Glendale, Mesa, and Gilbert were among the cities discussed. KJZZ reported that Glendale previously left about one-third of its Colorado River water in Lake Mead, and Gilbert has a 10-year agreement that will bring nearly $17 million to the town for water-saving projects.
Gilbert is also expanding its water infrastructure. ABC15 reported that the town is planning to expand the Greenfield Water Reclamation Plant from 12 million gallons a day to 16 million gallons a day. The treated wastewater can be reused for irrigation or recharged underground, helping the town prepare for future growth and Colorado River uncertainty.
Groundwater remained another major issue. The University of Arizona Water Resources Research Center highlighted a study on water banking and groundwater security, finding that managed aquifer recharge and water banking can improve drought resilience when policies encourage long-term storage. The Arizona Attorney General’s Office also reported early results from a groundwater settlement with Riverview Dairy in Cochise County. The agreement includes funding for well drilling, water hauling, and groundwater access, along with commitments to reduce groundwater use over time.
Tribal groundwater concerns also reached court. ICT reported that the Fort Mojave and Chemehuevi Indian Tribes sued the Interior Department over the Cadiz groundwater project in the Mojave Desert. The project would pump groundwater from beneath the Mojave Trails National Monument and move it through a converted pipeline. Tribal leaders said the project threatens cultural, ecological, and sacred resources tied to the desert and its water.
Conditions upstream also showed the river’s physical stress. Aspen Journalism reported that extremely low flows in Colorado’s 15-mile reach affected boaters, irrigators, and endangered fish. The report said the reach, located between Palisade and the Gunnison River, is a chronically depleted section of the Colorado River and critical habitat for endangered fish.
Together, the week’s reporting showed that water security is no longer only about legal allocations. It is about timing, infrastructure, storage, groundwater protection, conservation funding, and whether communities have the resources to adapt.
What does this mean for CRIT?
CRIT holds senior Colorado River rights, which remain central to the Tribe’s position in Basin planning. But the reporting shows that water security also depends on infrastructure, storage, delivery systems, and meaningful inclusion in federal decision-making.
The KTAR reporting on Tribal and rural impacts is important because CRIT is both a sovereign Tribal Nation and a major agricultural water user along the Colorado River. The ICT reporting also shows how groundwater projects can raise Tribal concerns when water, land, wildlife, and cultural resources are connected.
Sources
KTAR News
https://ktar.com/arizona-water-news/colorado-river-plan-puts-lower-basin-on-the-hook
UA Water Resources Research Center
https://wrrc.arizona.edu/news/study-water-banking-and-groundwater-security-published
Arizona Attorney General’s Office,
https://www.azag.gov/press-release/attorney-general-mayes-highlights-success-groundwater-agreement-riverview-dairy
Aspen Journalism
https://aspenjournalism.org/how-low-can-the-colorado-river-go-a-slow-float-on-the-15-mile-reach/