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Welcome to the Interagency Ecological Program (IEP). The IEP is a consortium of state and federal agencies that have been conducting cooperative ecological investigations since the 1970s (for more on IEP’s history, click here).

The IEP’s mission is to provide and integrate relevant and timely ecological information for management of the Bay-Delta ecosystem and the water that flows through it. This is accomplished through collaborative and scientifically sound monitoring, research, modeling, and synthesis efforts for various aspects of the aquatic ecosystem.

IEP Teams


Much of IEP's science cooperation, collaboration, and coordination takes place in IEP teams. The IEP stakeholder group and IEP technical Project Work Teams are open to the public.
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Monitoring, Research and Synthesis


IEP Agencies cooperatively conduct ecological investigations in the San Francisco Estuary aimed at producing high-quality information for management and conservation of the estuary.
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Program Reviews


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.
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Science Highlights

science graph

Science Highlights are created on a near-quarterly basis for the purpose of informing IEP Directors of recent findings and updates from throughout IEP’s research and monitoring program.
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IEP Workshops


IEP Agencies cooperatively hold an annual workshop to discuss and review IEP's monitoring and research efforts in the San Francisco Bay-Delta Estuary.
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IEP Newsletter


The IEP Newsletter is a quarterly electronic publication that provides IEP program and science highlights as well as in-depth articles on important scientific topics for resource managers, scientists, and the public.
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