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Delta Council Members

Created by the 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:

Randy Fiorini
Chair of the Delta Stewardship Council.  Randy 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 US 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 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.


In March 2010, Governor Arnold Schwarzenegger appointed Mr. Fiorini to serve on the Delta Stewardship Council. Mr. Fiorini was elected by his colleagues as Vice-Chair at their initial meeting and in 2014 he was elected Chair. He was reappointed to his position by Governor Jerry Brown in May 2016.


Aja Brown
Compton, CA, made history in 2013 when she became the youngest elected mayor of the City of Compton in Los Angeles County.  With over 10 years of experience in community and economic development, Mayor Brown has concentrated on improving outcomes through policy reform, innovation and strategic partnerships, serving the citizens of Compton.


Mayor Brown has made major strides in improving the quality of life for Compton residents. For instance, she has launched several community initiatives including the “Compton Community Policing Task Force.” And she has built partnerships with several of the surrounding colleges and universities to strategize on how to create industry-specific employment training programs and decreasing the City’s unemployment rate.


Mayor Brown has received the prestigious USC 2014 Young Alumni Merit Award, participated as the 2013 Pat Brown Institute Distinguished Lecturer and is the recipient of the National Action Network Martin Luther King Award. She holds a Bachelor’s Degree in Public Policy, Urban Planning and Development and a Master’s degree in Urban Planning with a concentration in Economic Development from USC.


Frank C. Damrell, Jr.
Sacramento, CA, 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, 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 U.S. 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.


Patrick Johnston
Stockton, CA, is the President and CEO of the California Association of Health Plans. He served 20 years in the Legislature, 10 in the Assembly and 10 in the Senate. He chaired the Senate Committee on Appropriations for six years and chaired the Assembly Committee on Finance and Insurance for four years.


Beyond his years in the legislature, Mr. Johnston worked for Health Net in government relations and taught public policy part-time at the University of California, Berkeley, and the University of the Pacific. He is an advisory board member of the UC Berkeley Petris Center on Health Care Markets and is a former member of the California Bay-Delta Authority and the California Delta Protection Commission.


Mr. Johnston is a graduate of St Patrick's College and holds a Master's Degree from CSU Sacramento. He was appointed to the Delta Stewardship Council in March 2010 by the Senate Committee on Rules.


Mary Piepho

Mary Nejedly Piepho
Discovery Bay, CA, is serving her third term on the Contra Costa County Board of Supervisors. She represents the largest of the five districts which includes Antioch, Oakley, Brentwood, Bethel Island, and Discovery Bay in East Contra Costa County and Diablo in the southern portion of the County.


Supervisor Piepho currently serves as the Chair of the Delta Protection Commission and Contra Costa County Finance Committee.  She is also one of the founding members of the 5 Delta Counties Coalition. She is a leader working with local, state and federal leaders to find a sustainable solution that will not compromise the long-term health and viability of the Delta. As a water-front resident who uses the Delta for both recreation and drinking water, she believes we must develop solutions that protect the Delta, its ecosystem and water quality. 


Supervisor Piepho is a life-long resident of Contra Costa County and is the daughter of the late State Senator John A. Nejedly.  She lives in Discovery Bay with her husband David, a retired firefighter for the Alameda County Fire Department, and daughter Mariah, who attends public school. She was appointed to the Delta Stewardship Council in January 2015 as chair of the Delta Protection Commission.


Susan Tatayon
Rocklin, CA, has been Associate Director of The Nature Conservancy’s California Water Program since 2006. She has over 30 years of experience in water resources policy, planning and management. In recent years, she has worked with agencies, reclamation districts, and natural-resource managers to design and implement innovative policies and strategies aimed at sustaining healthy aquatic ecosystems and reliable water supplies.


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.


Prior to working for The Nature Conservancy, Ms. Tatayon managed projects and staff for a multinational consulting firm, where she managed staff working on integrated water management plans and such projects as the Lower American River Flow Regime, the 2005 California Water Plan Update, and offstream storage investigations.


Governor Brown appointed Ms. Tatayon to the Delta Stewardship Council in May 2014. She holds a bachelor’s degree in Economics from California State University, Sacramento.


Ken Weinberg

Ken Weinberg

San Diego, CA 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 years’ long 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.


Governor Brown appointed Mr. Weinberg to the Delta Stewardship Council in May 2016. He holds a bachelor’s degree from State University of New York College 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.



Please click here to view retired Vice-Chair Phil Isenberg's page.

Coequal goals

The Delta Stewardship Council was created in legislation to achieve the state mandated coequal goals for the Delta. "'Coequal goals' means the two goals of providing a more reliable water supply for California and protecting, restoring, and enhancing the Delta ecosystem. The coequal goals shall be achieved in a manner that protects and enhances the unique cultural, recreational, natural resource, and agricultural values of the Delta as an evolving place." (CA Water Code §85054)