ALBUQUERQUE, N.M. (AP) — New Mexico’s top water official will be stepping down next month, wrapping up a four-decade career that has included work on water projects from New Mexico and Colorado to Texas.

Mike Hamman has served as the state engineer for the past two years and previously led an irrigation district that spans thousands of acres (hectares) in New Mexico’s most populated area. He also worked with the U.S. Bureau of Reclamation, managing federal water projects from the San Luis Valley in southern Colorado to Fort Quitman in Texas.

Hamman most recently was among those involved in negotiations that led to a three-state consent decree aimed at settling a long-running dispute with Texas over management of the Rio Grande. That case is pending before the U.S. Supreme Court.

Hamman said in a statement issued Wednesday that he will continue to support efforts to improve New Mexico’s water security while giving more attention to his family’s small farm in the Middle Rio Grande Valley.