The Central Arizona Project (CAP) has filed a motion to intervene in federal litigation against the U.S. Department of the Interior over Colorado River operations, seeking to ensure its interests are represented in the case.

The motion, filed Oct. 30 in Nevada district court, challenges federal operating decisions outlined in an Aug. 21, 2026, Record of Decision and Operating Guidelines. CAP argues the decisions conflict with the Colorado River Compact and other laws governing the river and could allow existing violations of the compact to continue.

CAP General Manager Brenda Burman said the organization is seeking a role in the litigation to defend its interests in the Colorado River and ensure any resolution addresses its concerns.

The legal action comes as CAP continues negotiations with water partners in California and Nevada on an agreement intended to provide water supply certainty through 2028, Burman said.

CAP's motion seeks to prevent implementation of the federal operating framework while the litigation proceeds. The press release did not specify a timeline for the court's decision on the motion.