Nevada Sues Federal Government Over Colorado River Water Cuts

Legal Challenge to Water Plan

The state of Nevada, the Southern Nevada Water Authority, and the Colorado River Commission of Nevada filed a lawsuit on Monday, Aug. 24, against the federal government to block a new water management plan for the Colorado River. The lawsuit, filed in the U.S. District Court of Nevada, requests an injunction to stop the implementation of a 10-year framework recently released by the Department of the Interior.

According to the 31-page complaint, the state alleges that the federal plan violates the Administrative Procedure Act, the National Environmental Policy Act, and a complex set of policies and prior agreements known as the "Law of the River". Nevada officials contend that the federal government failed to consider a reasonable range of alternative plans and did not adequately analyze the socioeconomic, environmental, and public health impacts of the proposed cuts.

Potential Water Reductions

Under the federal government's framework, Nevada faces significant reductions in its water supply. According to the lawsuit, the plan would impose an annual reduction of 213,556 acre-feet on Nevada at a 3.6 million acre-feet shortage level, which represents approximately 71% of the state's Colorado River entitlement. Other documents indicate the state would give up 50,000 acre-feet, or about 17%, of its allocation as part of the plan.

Nevada Governor Joe Lombardo (R) stated that the lawsuit is "a matter of survival for a community that represents about two-thirds of our state’s citizens and the lion’s share of its economy," adding that the move is not about "political posturing". Attorneys for the state and water authorities wrote that the shortfall would cause "devastating environmental, socioeconomic, and health and human safety impacts to southern Nevada and its citizens".

Basin Disputes and Environmental Context

The lawsuit highlights a divide between the Upper Basin states—Colorado, Utah, New Mexico, and Wyoming—and the Lower Basin states. Nevada contends that Upper Basin states have refused to agree to tangible reductions to stabilize the river and have instead sought a "legally dubious reinterpretation" of the Colorado River Compact. This reinterpretation, Nevada alleges, would preserve the full water rights of Upper Basin states while shifting the burden of shortages onto Lower Basin states.

Governor Lombardo specifically lamented that the Upper Basin states are not required to contribute to the reductions under the current federal plan. Nevada officials further argue that the plan unfairly makes life more difficult for three states while exempting four others from making water restrictions.

The legal battle occurs as the Colorado River system faces severe depletion. The river provides drinking water to more than 40 million people, irrigates nearly 5.5 million acres of farmland, and generates hydropower across seven states. Federal data indicates that Lake Mead is currently about 27% full and Lake Powell is approximately 23% full.

Federal Response

The Department of the Interior could not be immediately reached for comment on Monday regarding the filing. The lawsuit follows the release of the final plan three days prior, which had already been met with condemnation from water managers in both Nevada and Arizona.