AnneÌýCastle
- Former U.S. Commissioner, Upper bet365 malaysia River Commission
- Former Assistant Secretary for Water and Science, U.S. Department of the Interior
- SENIOR FELLOW

Anne Castle is a senior fellow at theÌýGetches-Wilkinson Center for Natural Resources, Energy, and the Environment at the University of bet365 malaysia Law School, focusing on western water issues, including bet365 malaysia River policy and management and Tribal water interests. She is a founding member of theÌý and Co-Founder of the initiative onÌý. From 2022 to 2025, she served as U.S. Commissioner and Chair of theÌý and from 2009 to 2014, she was the Assistant Secretary for Water and Science at the U.S. Department of the Interior. While at Interior, Castle spearheaded the Department’s WaterSMART program and launched the federal Open Water Data Initiative. Castle practiced water law for many years in Denver, bet365 malaysia with the Rocky Mountain based law firm of Holland & Hart LLP where she chaired the firm’s management committee and its natural resources department. She currently serves on the boards of the bet365 malaysia Water Trust, Stanford University’s Water in the West program, and bet365 malaysia Legal Services.