The U.S. Bureau of Reclamation released a Final Environmental Impact Statement on Friday, July 31, outlining proposed operating rules for the Colorado River system from 2027 through 2036. The plan seeks to shape management for the next decade and carries significant implications for Glen Canyon Dam and Lake Powell.
The proposed framework was developed after years of negotiations failed to reach a consensus among the seven Colorado River Basin states. The primary goal of the plan is to reduce the risk of Lake Powell and Lake Mead falling to elevations that could threaten hydroelectric generation at Glen Canyon Dam and water deliveries.
Federal officials stated that maintaining these reservoirs is the top priority as the Southwest faces declining river flows and long-term drought. Under the proposal, Arizona, California, and Nevada would absorb the largest mandatory reductions in water use, with deeper cuts possible if reservoir conditions worsen. Utah, Colorado, Wyoming, and New Mexico would not face mandatory consumptive-use reductions under this framework, as Upper Basin states maintain their water use is limited by natural river flows.
As of late July, Lake Powell was at approximately 3,525 feet above sea level, which is roughly 174 feet below full pool and about 24 percent of its live storage capacity. Projections from Reclamation suggested the reservoir could finish the 2026 water year near an elevation of 3,516 if dry conditions persist.
The proposal has faced criticism from Arizona officials who argued the Lower Basin is being asked to shoulder too much of the burden. Federal officials countered that the plan reflects the reality of a river that carries significantly less water than when the Colorado River Compact was signed over a century ago.
For residents of Kane County, the proposal is viewed as a means of protecting a vital economic and recreational resource rather than a matter of legal disputes between states. The Bureau of Reclamation is expected to issue a formal Record of Decision later this year to establish rules that will replace current guidelines when they expire at the end of 2026.
The new operating rules are not expected to produce immediate visible changes for visitors at Lake Powell, but they underscore the ongoing challenges facing the reservoir.
