IEP Survey Data

The Interagency Ecological Program (IEP) monitoring studies have collected hydrodynamic, water quality, and biological data in the San Francisco Bay-Delta since 1959.

Along with these long-term monitoring surveys, IEP scientists regularly conduct short-term experiments, special studies, and synthesis projects (see the Directed Studies & Synthesis web page).

Data Access

The table shown in the tab below provides access to data collected by the various IEP studies and a contact person who can provide the data, on request.

Sampling Map

The interactive mapping tool shown in the tab below allows you to see where and when data have been collected by these long-term surveys, so you can plan your data requests accordingly.

Data Repositories

The portals and data respositories shown in the tab below provide a comprehensive list of sites that provide IEP data.

Data Access
Sampling Map
Data Repositories

Browse records in that Search

Program/Project	Agency	Study Type	Contact	Project Description Notes	Keywords	Update Frequency	Data Link	WQ	Phyto	Zoop	Benthic Inverts	Fish
20mm Survey	CDFW	Long Term	Vanessa Mora (Fish) Jessica Jimenez (Zooplankton)	Larval fish survey to determine timing, distribution and abundance of Delta Smelt Larvae and their food supply.	Fish, Zooplankton, Water Quality	Weekly	CDFW 20mm Survey FTP site EDI - IEP San Francisco Estuary 20mm Survey Data Package	x		x		x
Delta Juvenile Fish Monitoring Program (DJFMP)	USFWS	Long Term	Jonathan Speegle	Thrice weekly fish surveys including trawls and beach seines.	Water Quality, Fish	Annual	EDI IEP: Over four decades of juvenile fish monitoring data from the San Francisco Estuary, collected by DJFMP, Data Package Summary EDI - Chipps Island Trawl, DJFMP, Genetic Determination of Population Origin Data Package Summary	x				x
Environmental Monitoring Program: Benthic invertebrates	CDWR	Long Term	Betsy Wells	Monthly benthic invertebrate monitoring in the Delta, Suisun Bay, and San Pablo Bay.	Benthic Invertebrates	Annual	EDI - IEP Benthic Invertebrate Monitoring in the Sacramento-San Joaquin Bay -Delta (EMP) Data Package Summary		x		x
Environmental Monitoring Program: Continuous Water Quality	CDWR	Long Term	Scott Waller	Continuous water quality monitoring in the Delta	Water Quality, Continuous	Continuous	QA'ed data available upon request; Raw, non-QA'ed data is available on the California Data Exchange Center	x
Environmental Monitoring Program: Discrete Water Quality	CDWR	Long Term	Morgan Battey	Monthly water quality and nutrient monitoring in the Delta, Suisun Bay, and San Pablo Bay.	Water Quality, Nutrients	Annual	EDI - IEP: EMP Discrete Water Quality Monitoring in the Bay-Delta Data Package Summary	x

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Portals and Repositories with IEP Data

Do you know of additional portals and data repositories that showcase IEP data? Contact Rosemary Hartman (DWR) to have them included in the list.