Delta Lead Scientist

The Delta lead scientist oversees the Delta Science Program and consults regularly with partner agencies, as well as the Delta Stewardship Council and its executive officer, chief deputy executive officer, and the deputy executive officer for science. The lead scientist is secured through a multi-year appointment with the United States Geological Survey.

Current Lead Scientist

Dr. John Callaway, an internationally recognized expert in wetland restoration, specifically wetland plant ecology and sediment dynamics, was unanimously appointed by the Council as lead scientist at its July 2017 meeting. Most recently, Dr. Callaway has served as the director of the Master’s Program in Environmental Management at the University of San Francisco. “I look forward to the continuing efforts of building a collaborative scientific community with its search for common truths on the many critical issues that face the Delta,” Dr. Callaway said. “The development of One Delta, One Science is clearly a project of critical importance to California that is helping set standards of how the best available science can more effectively inform the making of policy.”

As Dr. Callaway’s three-year term comes to an end, he will be succeeded by Dr. Laurel Larsen beginning September 1, 2020.

Previous Lead Scientists

  • Dr. Cliff Dahm - 2008-2012 and 2015-2017
  • Dr. Peter Goodwin - 2012-2015
  • Dr. Michael Healey - 2007-2008
  • Dr. Johnnie Moore - 2004-2006
  • Dr. Sam Luoma - 2000-2003