The U.S. Interior Department announced Friday a short-term plan to reduce Colorado River water usage in California, Arizona, and Nevada. The plan requires these three states, known as the Lower Basin states, to reduce their collective water consumption by 1.25 million acre-feet per year during 2027 and 2028.
This new directive follows a recent federal announcement regarding a 10-year framework for the river. That broader framework included the possibility of water cuts reaching as high as 3 million acre-feet annually, a figure that state officials in Arizona and Nevada said could negatively impact local economies. The Interior Department stated that the 10-year framework is intended to remain flexible based on future water conditions.
Under the specific guidelines released Friday, the federal government is also encouraging the three states to conserve and store an additional 700,000 acre-feet of water over the next two years. The 1.25 million acre-foot reduction mandate matches a proposal previously submitted by the three states themselves. The Interior Department also indicated it was finalizing the decision for the longer-term 10-year framework.
Residents and businesses in these states will notice a concrete change in available water resources starting in 2027. The mandate requires a specific reduction in usage, while an additional 700,000 acre-feet is targeted for voluntary conservation and storage. This move by the Interior Department (DOI) effectively adopts the short-term recommendations made by the states themselves, potentially delaying or avoiding the more stringent cuts that were outlined in the broader federal framework.
The plan sets a precedent for how the federal government and state authorities coordinate on Colorado River management during periods of limited supply. By aligning the short-term mandate with state proposals, the DOI is utilizing a cooperative approach for the immediate two-year period while maintaining the ability to implement steeper cuts if water conditions deteriorate. What happens next is the implementation of these cuts beginning in 2027, alongside the finalization of the longer 10-year framework that will govern river usage through the mid-2030s.