In 1977, James J. Acquavella’s name was listed first on the summons when Ecology filed a petition for an adjudication to determine the legality of all claims for surface water in the Yakima River Basin – birthing the Ecology v. James Acquvella, et al water rights case. Forty-two years and 2,500 claimants and interested parties later, it is coming to a close. Some takeaways for this milestone moment in Washington state water management are:
Starting in 1977, the Department of Ecology v. Acquavella adjudication is the longest-running general adjudication in state history, determining the validity and establishing priority of surface water claims in the Yakima Basin.
With the issuance of the Final Decree by Yakima County Superior Court, water right holders in the Yakima Basin will finally have certainty over the authorized quantities and purposes and places of use of their water right claims.
Adjudicated water right certificates will be issued by Ecology for all claims determined by the Court to be valid; water right holders will no longer need to get approval of the Court to complete a change or transfer a water right, but instead file applications with Ecology like everywhere else in the State.
During the adjudication, stakeholders in the Yakima Basin continued to lead the state in providing innovative approaches to water resource management challenges, including early adoption of water banking and mitigation markets to ease permitting of new water rights, and development and implementation of the Yakima Basin Integrated Plan.
Aspect has worked on a variety of Aquavella claims over the decades – including hundreds of due diligence water right evaluations; helping buyers/sellers move and change these rights; and developing water banks through the State’s Trust Water Right Program to support efficient transfer of existing rights and permitting of new, mitigated water rights.