About Mann Water Law

20 Years Resolving Complex Water Disputes

Josh Mann has spent two decades at the intersection of water law, tribal rights, and federal policy. As founder and principal attorney of Mann Water Law, he represents Tribal Nations, governmental entities, and private parties in water rights disputes, regulatory proceedings, and natural resource matters across the West.

Josh's career spans private practice, federal agency work, and Interior Department policy. He served as an Attorney Advisor in the U.S. Office of the Solicitor and as a Policy Analyst in the Secretary of the Interior's Indian Water Rights Office, where he led negotiations that secured $137 million in additional federal funding for the Aamodt Water Rights Settlement. Earlier in his career, he served as a Special Assistant Attorney General for the New Mexico Interstate Stream Commission, managing water reserve initiatives in both the Rio Grande and Pecos River Basins.

That combination of administrative proceedings, federal agency work, and multi-party negotiation gives Josh a practical, inside-out understanding of how water rights disputes are actually resolved - and what it takes to protect his clients' interests in the process.

Josh earned his J.D. from the University of New Mexico School of Law, where he served as Editor-in-Chief of the Natural Resources Journal. He has published in the University of Denver Water Law Review, Idaho Law Review, and Natural Resources Journal, and is certified in both natural resources law and mediation. He is a frequent CLE speaker on water law topics and has co-chaired the Tribal Water Law CLE since 2023.

Licensed to practice: New Mexico and Colorado