A senior Interior Department official who has had a key role in negotiations over the shrinking Colorado River plans to step down from the job next week.

Tanya Trujillo told the department of her intention to resign as assistant secretary for water and science about six weeks ago and her last day is Monday, she told The Associated Press. Trujillo, who has served in the role since June 2021, said it made sense to leave now as the Biden administration gears up for a reelection campaign.