Department of Water Resources Home

Related Links:

morrow island

Office of Water Quality and Estuarine Ecology

Stephani Spaar, Chief

3500 Industrial Blvd.
West Sacramento, CA 95691
(916) 376-9703

Mailing Address:
P.O. Box 942836
Sacramento, CA 94236-0001

IEP Banner

Mission Statement: The mission of the Office of Water Quality and Estuarine Ecology is to meet the overall water quality and estuarine ecology needs of the Department, and to provide a central point for the collection and dissemination of water quality and related ecological information for the Department and its stakeholders.

While the Office’s geographic focus is the Sacramento-San Joaquin Delta and the State Water Project, it also provides support to other DWR divisions, offices, and stakeholders throughout the State in meeting their water quality, estuarine science, and analytical laboratory needs. This includes providing water quality and ecological data, information, and technical expertise in support of State Water Project operations and regulatory compliance, and associated scientific research and synthesis, adaptive management, long-range planning, and policy development. The program areas that help support these goals, include:

Environmental Water Quality and Estuarine Studies


Collects data on the factors that affect ecological resources in the Sacramento-San Joaquin Estuary and converts those data into information for agency and public use. This program ensures compliance with the State Water Resources Control Board’s Water Rights Decision D-1641. Learn more...

Estuarine Science and Synthesis


Analysis of water quality and biological data is necessary to address specific science and management questions. This component of the office devotes staff to analyzing data to provide information for critical management issues.
Learn more...

Municipal Water Quality Program


Technical and programmatic reviews are conducted for the overall program and individual program elements to ensure continued relevance, scientific integrity, and compliance with legal requirements.
Learn more...
Bryte Chemical Laboratory

science graph

An ELAP-accredited laboratory, Bryte Laboratory supports the Department of Water Resources’ mission to protect, restore, and enhance California’s natural and human environments by providing accurate, accessible data that are essential for data-driven decision making. 
Learn more...

QA/QC Support Services


The Quality Assurance Unit supports the objectives of data-driven decision making for the protection of public health and the environment. The Quality Management Program ensures that all environmental data generated and utilized by DWR are of a known and verifiable quality.
Learn more...

Collaborative Programs


The Office of Water Quality and Estuarine Ecology plays a pivotal role in numerous interagency collaboratives, which seek to improve coordination amongst their partner agencies, enhance the quality of science conducted in the region, and improve access to data collected from those programs Learn more...