Delta Stewardship Council Members

Created by the California Legislature in 2009, the Delta Stewardship Council is composed of members who represent different parts of the state and offer diverse expertise in fields such as agriculture, science, the environment, and public service. Of the seven, four are appointed by the Governor, one each by the Senate and Assembly, and the seventh is the Chair of the Delta Protection Commission.

The Council's work is supported by an independent board of nationally and internationally prominent scientists.

Council members are:

Delta Stewardship Council Chair Susan Tatayon.

Susan Tatayon

Chair of the Delta Stewardship Council, Susan Tatayon is from Rocklin, CA. In a career spanning more than 35 years in water resources management, she has worked for The Nature Conservancy, a multinational water resources consulting firm, the U.S. Bureau of Reclamation and the California Department of Water Resources (DWR).

Ms. Tatayon held several positions at The Nature Conservancy (a conservation NGO) over the last 12 years, including water project director and associate director of its California Water Program. Much of her work for TNC was focused on issues related to the Delta, floodplain management, and groundwater. At the consulting firm, she managed projects and staff working on integrated water management plans and such projects as the Lower American River Flow Regime, the 2005 California Water Plan Update, and off stream storage investigations.

At the Bureau of Reclamation, she served as special assistant to the regional director of the Mid-Pacific Region and worked on implementation of the CALFED Record of Decision, the Central Valley Project Improvement Act, water transfers, and renewal of long-term water contracts. At DWR, she served as special assistant to the chief deputy director and later managed DWR’s water reuse program. Prior to 1996, she worked in DWR’s planning division on special projects related to water transfers, storage investigations, and Mono Lake.

Ms. Tatayon was elected to the Floodplain Management Association board of directors in 2013. From 2011 to 2013, she co-chaired the California Water Plan Update Advisory Committee’s Finance Caucus. In 2009, she served on work groups that helped define the scope of the first Central Valley Flood Protection Plan. In 2007, she served as a member of the stakeholder group advising the Governor’s Blue Ribbon Task Force for sustainable management of the Delta.

A pragmatist who enjoys working with people in a down-to-earth way to find practical, useful solutions to problems, throughout her career Ms. Tatayon has done her best to listen carefully to better understand others' interests and perspectives to discover solutions that are workable for most concerned. She has also worked closely with scientists, modelers, and water-project operators, which has prepared her well for understanding on-the-ground implications of proposed policies.

Ms. Tatayon was appointed to the Council by Gov. Jerry Brown in 2014, and reappointed in 2018. Her current term expires Feb. 2, 2022. She was elected by the Council to serve as vice chair in 2016 and as chair beginning Jan. 1, 2019.


Delta Stewardship Council Vice Chair Randy Fiorini.

Randy Fiorini

Vice-Chair of the Council, Mr. Fiorini was born in Turlock, CA, where he was raised on his family’s tree fruit and wine grape farm. After graduation from Cal Poly San Luis Obispo in 1975, Mr. Fiorini returned to Turlock and assumed managing partner responsibilities for Fiorini Ranch.

Interested in agricultural industry affairs, Mr. Fiorini was elected to serve as the chairman of the California Canners and Growers, chairman of the California Cling Peach Advisory Board, and was appointed by two Presidents to serve on the United States Agricultural Technical Advisory Committee for Fruits and Vegetables.

In addition to farming, Mr. Fiorini has found time to serve as director on many local boards, including Faith Home Teen Ranch, Hope Unlimited International, and he is the past president of Emmanuel Medical Center, Rotary Club of Livingston, and the Merced County Farm Bureau.

Recognized for his agricultural leadership and on-farm achievements, Mr. Fiorini was selected by the United States Jaycees in 1987 as the Outstanding Young Farmer in the United States.

Mr. Fiorini’s public involvement with water issues began in 1992 when he was elected to be a director of the Turlock Irrigation District. He served in that capacity for 16 years. During that time he also served as president of the San Joaquin River Group Authority, president of the California Farm Water Coalition, and as president of the Association of California Water Agencies.

Mr. Fiorini was appointed to the Council by Gov. Arnold Schwarzenegger in 2010 for an initial six-year term. He was reappointed by Gov. Jerry Brown in 2018, and his current term expires Feb. 2, 2020. Mr. Fiorini was elected by the Council to serve as vice chair at the initial 2010 Council meeting and in 2014 he was elected to a four-year term as chair. He was re-elected by the Council as vice chair beginning Jan. 1, 2019.


Delta Stewardship Council member Frank C. Damrell Junior.

Frank C. Damrell, Jr.

Frank C. Damrell, Jr., of Sacramento, is a principal at Cotchett, Pitre, and McCarthy and was a distinguished Federal Judge of the United States District Court, Eastern District of California. Prior to his appointment as a Federal Judge in 1997 by President Clinton, Mr. Damrell was a Deputy Attorney General for California and a Deputy District Attorney in Stanislaus County. He started his own law firm in 1968 in Modesto and headed that firm until his appointment to the United States District Court.

Judge Damrell holds a Bachelor of Law (LLB) degree from Yale Law School and a Bachelor of Arts from the University of California at Berkeley. He also holds an honorary Doctor of Laws from Santa Clara University.

During his career he has served as president of the Consumers Federation of California and was appointed to the California State Consumer Advisory Council. He has also served on numerous collegiate boards throughout Northern and Central California, on the Judicial Panel on Multidistrict Litigation, and on the Federal/State Steering Committee on Civic Education.

Judge Damrell was appointed to the Council by Gov. Jerry Brown in in 2014, and reappointed in 2018. His current term expires on Feb. 2, 2022.


Delta Stewardship Council member Mike Gatto.

Mike Gatto

Former Assembly Member Mike Gatto, of Los Angeles, has always felt a calling to improve how government works for Californians. He was elected to four terms in the California State Assembly, and authored several pieces of landmark legislation during his tenure, including several innovative bills to improve Californians’ quality of life.

During his time in the California Legislature, he chaired several committees in the Assembly, including Appropriations, Consumer Protection & Privacy, and Utilities & Commerce. In addition, he served on the Water, Parks & Wildlife Committee, and was the co-author and a principal negotiator of the California Water Bond of 2014.

Along with his duties as a Council member, Mr. Gatto serves on the boards of several entities, and is the Legislator in Residence at the University of Southern California's Unruh Institute of Politics. He is an attorney, and lives in Los Angeles’ Silver Lake neighborhood with his wife and children.

Mr. Gatto was appointed to the Council by the speaker of the California Assembly in 2016 and reappointed in 2018. His current term expires on Feb. 2, 2022.


Delta Stewardship Council member Maria Mehranian.

Maria Mehranian

Maria Mehranian, of La Cañada Flintridge, is managing partner and chief financial officer of the Cordoba Corporation, a nationally recognized infrastructure development firm based in Los Angeles. Ms. Mehranian previously served as a gubernatorial appointee on the Los Angeles Regional Water Quality Control Board from 2008 to 2016.

She holds a masters of Urban and Regional Planning from the University of California, Los Angeles, and participates in numerous policy panels on water quality and supply issues, and serves as a guest lecturer for universities throughout the state. Ms. Mehranian holds leadership positions for several academic institutions, including the Woodbury University Board of Trustees and the Dean’s Leadership Board at Cal Poly Pomona College of Engineering.

She currently is the international chairperson of Armenia Fund, Inc., which has raised more than $120 million for humanitarian and infrastructure development in Armenia. Ms. Mehranian is a recipient of the Ellis Island Medal of Honor for exemplifying outstanding qualities in both her personal and professional life while continuing to preserve the richness of her Armenian heritage.

Ms. Mehranian was appointed to the Council by the California Senate Rules Committee in 2018. Her current term expires on Feb. 2, 2022.


Delta Stewardship Council member Oscar Villegas.

Oscar Villegas

Yolo County Supervisor Oscar Villegas serves on the Council in the post reserved for the chair of the Delta Protection Commission.

Oscar Villegas was elected for a second term as the Yolo County Supervisor for District 1 in November 2016, which encompasses a majority of West Sacramento and the community of Clarksburg. In January 2018, Supervisor Villegas assumed the role of chair of the Board of Supervisors.

During his tenure on the Board of Supervisors commencing in February 2014, Supervisor Villegas also served on the California State Association of Counties (CSAC)/League of California Cities Joint Homelessness Task Force, National Association of Counties (NACo) Board of Directors, Yolo Bypass Partnership, and the Yolo County Ad Hoc Subcommittee on Agricultural Labor. Most recently, in 2018 Supervisor Villegas was appointed to co-chair CSAC's Housing, Land Use, and Transportation Committee.

In addition, Supervisor Villegas supported the City of West Sacramento in its approach to quality growth, and is supportive of the emerging wine industry in Clarksburg and ongoing preservation of agriculture and appropriate land use consistent with the Clarksburg Area General Plan.


Delta Stewardship Council member Ken Weinberg.

Ken Weinberg

Ken Weinberg, of San Diego, is a former utility executive with 32 years of public agency experience, 24 of those at the San Diego County Water Authority where he served 18 years as Director of Water Resources. He was responsible for long-term water supply and facilities planning, development, and administration of water conservation programs, drought management and the environmental compliance and permitting of Water Authority capital projects. Mr. Weinberg also led a multi-year effort to develop and approve a Water Purchase Agreement for the Carlsbad Desalination Project.

In 2015 he formed Ken Weinberg Water Resources Consulting LLC and is assisting clients in water resources planning and local water supply project development. Throughout his career Mr. Weinberg has been a strong proponent of water use efficiency and the local development of drought resilient water supplies. He has been involved in the planning and implementation of non-potable and potable water recycling projects and helped to form and lead the San Diego County Integrated Regional Water Management Program.

He holds a bachelor’s degree from State University of New York College at Buffalo and a master of Public Administration from San Diego State University. He is also an Adjunct Lecturer at CSU San Marcos teaching a course on Water Management Principles in California.

Mr. Weinberg was appointed to the Council by Gov. Jerry Brown in 2016. His current term expires on Feb. 2, 2020.