Department of Water Resources Home
IEP Banner

Interagency Ecological Program Data and Metadata Portal

The Interagency Ecological Program (IEP) monitoring studies have collected hydrodynamic, water quality, and biological data in the San Francisco Bay-Delta since 1959 (Honey et al. 2004, Herrgesel 2014). Over the decades, surveys have been added or modified in both geographic scope or in protocol. Surveys vary with respect to their period of record, their geographic and seasonal coverage, and in the types of the data they collect. The goals of this page are to provide an overview of IEP surveys and the diversity of data they collect, and to provide direct access to metadata and data for all possible surveys.

Table 1 provides an overview of existing long-term monitoring programs of IEP and illustrates the data types currently collected by each survey. Tables 2-4 provide detailed information and links to metadata and data for individual surveys focused on water quality, phytoplankton, invertebrates, and fish. Fish surveys found in Table 4 include additional data types collected along-side fish sampling, such as discrete water quality and zooplankton.

 

Table 1. Data types collected by existing IEP long-term monitoring program elements. Each survey is described in the IEP Workplan under the “Compliance and Monitoring Elements” section and has an associated Program Element Number (PEN).

Program

IEP PEN

Hydrodynamics

Discrete Water Quality

Continuous Water Quality

Phytoplankton

Zooplankton

Benthic Invertebrates

Fish

Fall Midwater Trawl

003

 

X

 

 

X

 

X

Summer Townet Survey

007

 

X

 

 

X

 

X

Bay Study

011/ 012

 

X

 

 

 

X

X

Bay Salinity Monitoring

029

 

X

X

 

 

 

 

Delta Flow network

030

X

 

X

 

 

 

 

20-mm Survey

033

 

X

 

 

X

 

X

Delta Juvenile Fish Monitoring Program

053/301/302

 

X

 

 

 

 

X

Environmental Monitoring Program

072/077

 

X

X

X

X

X

 

San Joaquin River Dissolved Oxygen Monitoring

073

 

X

X

 

 

 

 

Knights Landing Juvenile Salmon

074

 

X

 

 

 

 

X

Spring Kodiak Trawl

088

 

X

 

 

 

 

X

Suisun Marsh Survey

093

 

X

 

 

X

 

X

Smelt Larval Survey

096

 

X

 

 

 

 

X

Operation of Thermograph Stations

104

 

X

 

 

 

 

 

Adult Striped Bass Population Estimates

002

 

X

 

 

 

 

X

Adult Sturgeon

005

 

X

 

 

 

 

X

Yolo Bypass Fisheries Monitoring Survey

047

 

X

X

X

X

 

X

Liberty Island Fish Survey

279

 

X

 

 

X

 

X

 

 

Table 2. Hydrodynamic and Water Quality Surveys.

Program

Agency

Contact Information

Descriptor

Start Year

Sample Site Map (and shapefiles if available)

Metadata Link

Download Data

Delta Flow Network

United States Geological Survey (USGS)

Cathy Ruhl
cruhl@usgs.gov
(916) 278-3129

Real-time flow and water-quality

1988

Map

Continuous Water Quality
Flow Data

Data

Bay Salinity Monitoring

USGS

Maureen Downing-Kunz
mdowning-kunz@usgs.gov
(916) 278-3051

Real-time, continuous water-quality

1989

Map

Continuous Water Quality
Discrete Water Quality

Data

Environmental Monitoring Program: Discrete Water Quality

Department of Water Resources (DWR)

Jenna Rinde
(916) 376-9773

Physical and chemical constituents collected monthly

1975

Active Historic

Discrete Water Quality

Data

Continuous Water Quality

DWR

Mike Dempsey
(916) 376-9775

D-1641 compliance stations-water quality data is collected every 15-minutes and telemetered to CDEC

1978

Active & Historic

Continuous Water Quality

Contact
Mike Dempsey

DWR

 

 

 

Rolf Frankenback
(916) 376-9661

Water quality data is collected every 15-minutes and telemetered to CDEC 

1998

Map and coordinates provided in metadata

Water Quality Evaluation Section

Water Data Library Home

USGS

 

 

 

See above under Delta Flow Network

United States Bureau of Reclamation (USBR)

 

Arien Chavez

 

 

 

 

 

National Oceanic and Atmospheric Administration (NOAA)

 

 

 

 

 

 

San Joaquin River Dissolved Oxygen Monitoring

DWR

Jenna Rinde
(916) 376-9773

Dissolved oxygen data is collected bimonthly during the summer and fall

1968

 

 

Contact
Jenna Rinde

Yolo Bypass Fish Monitoring Program:  Continuous Water Quality

DWR

Brian Schreier
(916) 376-9759

Several stations in Yolo Bypass and one comparison location in Sacramento River

1999 and various (site dependent)

Map

 

Contact
Jared Frantzich

 

Table 3. Phytoplankton, Zooplankton, and Benthic Invertebrate Surveys.

Program

Agency

Contact Information

Descriptor

Start Year

Sample Site Map (and shapefile if available)

Metadata
Link

Download Data

Environmental Monitoring Program: Phytoplankton

DWR

Tiffany Brown
(916) 376-9723

Monthly chlorophyll and phytoplankton samples collected throughout the estuary

1975

Active Monitoring Stations

Historically Sampled Stations

Phytoplankton

Data

Yolo Bypass Fisheries Monitoring Survey: Phytoplankton

DWR

Brian Schreier
(916) 376-9759

Biweekly chlorophyll and phytoplankton samples in Yolo Bypass, and one comparison location in the Sacramento River

Chlorophyll: 2001 and various (site dependent); Phytoplankton: 2015

Map - Chlorophyll

Chlorophyll Metadata

Contact
Jared Frantzich

Environmental Monitoring Program: Benthics

DWR

Betsy Wells
(916) 376-9821

Benthic samples collected monthly at ten sites located throughout the estuary

1975

Map 1 - Benthic Historic Monitoring Stations

 

Map 2 - Benthic Active Monitoring Stations

Benthic Organisms

Data

Environmental Monitoring Program: Zooplankton

CDFW

April Hennessy
(209) 234-3665

Monthly microzooplankton (63-150 microns), mesozooplankton (150-500 microns), and mysid (>500 microns) samples collected throughout the estuary

1975

Actively sampled stations

Zooplankton

Data

Fall Midwater Trawl: Zooplankton

CDFW

Randy Baxter,
(209) 234-3483

A subset of stations  are sampled for zooplankton: Clarke-Bumpus (CB)and mysid nets

2005 Sep only, 2011 Sep-Dec

Map

Metadata

Data

Summer Townet Survey: Zooplankton

CDFW

Randy Baxter, (209) 234-3483

Zooplankton sampled during first tow (CB sample).

2005

Map

Metadata

Data

20-mm Survey: Zooplankton

CDFW

Bob Fujimura
(209) 234-3485

Zooplankton; CB samples, March-July

1995

Map

Metadata

Data

Bay Study: Benthics

CDFW

Kathy Hieb
(209) 234-3484

Decapods: shrimp, and crabs using otter trawls and midwater trawls throughout the Bay and upper estuary.

1980

 

Metadata included in zipped folders with Access databases

Data

 

Table 4. Fish Surveys

Program

Agency

Contact Information

Descriptor

Start Year

Site Map

Metadata Link

Download Data

Fall Midwater Trawl

CDFW

Randy Baxter,
(209) 234-3483

Fish survey using midwater trawls to target juvenile and adult fish throughout the upper estuary during the fall.

1967

Map

Metadata

Data

Monthly abundance indices

Summer Townet Survey

CDFW

Randy Baxter, (209) 234-3483

Fish survey targeting juvenile Delta Smelt and age-0 striped bass during June through August.

1959

Map

Metadata

Data

Delta Smelt abundance indices

Bay Study

CDFW

Kathy Hieb
(209) 234-3484

Survey of pelagic and demersal fish, shrimp, and crabs using otter trawls and midwater trawls throughout the Bay and upper estuary.

1980

 

Metadata included in zipped folders with Access databases

Data

Fish distribution maps

20-mm Survey

CDFW

Bob Fujimura
(209) 234-3485

Larval and small juvenile fish survey to determine timing, distribution and abundance of Delta Smelt larvae and their food supply (zooplankton; CB samples), March-July

1995

Map

Metadata

Data

Fish distribution maps

Delta Juvenile Fish Monitoring Program

United States Fish and Wildlife Service (USFWS)

Lori Smith
(209) 334-2968 ext. 343

Beach seine and trawling surveys from San Pablo Bay to Colusa on Sacramento River and lower San Joaquin River

Beach seine, Chipps Island trawl: 1976; Sherwood Harbor (Sac River) trawls: 1988; Mossdale (San Joaquin River) trawl: 1994

Map and coordinates provided in metadata

Metadata

Data

Knights Landing Juvenile Salmon

CDFW

Colin Purdy
(916) 358-2943

Rotary screw traps in the Sacramento River fished from Oct-June targeting juvenile Chinook salmon.

1995

 

Contact
Colin Purdy

Data

 

Spring Kodiak Trawl

CDFW

Bob Fujimura
(209) 234-3485

Fish survey targeting adult, spawning delta smelt, Jan-May

2002

Map

Metadata

Data

Delta Smelt distribution maps

Suisun Marsh Survey

University of California, Davis (UCD)

Teejay O’Rear

 

Fish and invertebrate sampling in Suisun Marsh to document long-term population trends of native and introduced fishes.

1979

 

 

Contact
Teejay O’Rear

Smelt Larval Survey

CDFW

Bob Fujimura
(209) 234-3485

Near real-time distribution data for targeting larval smelt in the upper estuary, Jan-March

2009

 

Metadata

Data

Distribution maps

Striped Bass Study

CDFW

Marty Gingras
(209) 234-3486

Monitors adult striped bass through creel surveys, mark-recapture studies, and commercial passenger fishing vessel log-book information.

1969

 

Contact
Marty Gingras

Contact
Marty Gingras

Summary graphs and reports

Sturgeon Study

CDFW

Marty Gingras
(209) 234-3486

Monitors adult green and white sturgeon through creel surveys, mark-recapture studies, and commercial passenger fishing vessel log-book information.

1967

 

Contact
Marty Gingras

Contact
Marty Gingras

Summary graphs and reports

Yolo Bypass Fisheries Monitoring Survey

DWR

Brian Schreier
(916) 376-9759

Biweekly beach seines, juvenile fish rotary screw trap (Jan – June); adult fish fyke net (October – June); biweekly larval fish tows in the Yolo Bypass (larval fish also collected at comparison Sacramento River location

Beach seines, rotary screw trap: 1998; Fyke trap, larval tows: 1999

Map – Beach Seine

Map - Fyke

Map – Rotary Screw Trap

Map – Eggs & Larvae

Metadata – Beach Seine

Metadata - Fyke

Metadata – Rotary Screw Trap

Metadata – Eggs & Larvae

Contact
Naoaki Ikemiyagi

Liberty Island Fish Survey

USFWS

Lori Smith
(209) 334-2968 ext. 343

Larval fish sampling and monthly beach seine surveys inside Liberty Island.

 

 

 

Contact
Lori Smith

 

 

 

Related Links

Website

Agency

Description

Bay-Delta Live

 

Portal for data from various sources, tools for mapping and graphing data

Biogeographic Information and Observation System (BIOS)

CDFW

Interactive spatial data viewer for habitats and biological resources.

CalFish Data Explorer

CalFish

Data on anadromous fish and habitat resources

California Data Exchange Center (CDEC)

DWR

Continuous water quality, flow, and hysrology data collected by numerous agencies

California Environmental Data Exchange Network (CEDEN)

State Water Resources Control Board

Discrete data on water quality and contaminants

California Estuaries Portal

California Water Quality Monitoring Council

Portal for data from various sources

Contaminant Data Display and Download (D3)

San Francisco Estuary Institute (SFEI)

Data on contaminants in water, sediment, and fish tissue from numerous sources.

DAYFLOW

DWR

Average daily Delta flows (updated annually)

Delta Historical Ecology Study

SFEI

Historical habitat and land use types

Delta Status and Operations

DWR

Daily and weekly State Water Project Delta status, operations reports, and graphs

EcoAtlas

SFEI

Interactive map of wetland types, restoration project locations, CRAM results, CARI (California Aquatic Resources Inventory)

EPA Storage and Retrieval (STORET)

United States Environmental Protection Agency

Water quality, biological and physical data on water quality and water resources

National Water Information System (NWIS)

USGS

Continuous and discrete water resources data collected by various agencies.

Sacramento Prediction and Assessment of Salmon through Ecological Data and Modeling for In-Season Management (SacPAS)

USBR

Salmon passage information linked to environmental conditions. Website under development.

Salvage Monitoring

CDFW

Daily data on fish salvaged from the State Water Project and Central Valley Project.

Water Data Library

DWR

Continuous and discrete water quality data collected by DWR

 

References

Herrgesell, P.L. 2012. A historical perspective of the Interagency Ecological Program: bridging multi-agency studies into ecological understanding of the Sacramento-San Joaquin Delta and Estuary for 40 years.
IEP Report: http://www.water.ca.gov/iep/docs/Herrgesell_IEP_Report_FINAL.pdf

Honey, K., Baxter, R., Hymanson, Z., Sommer, T., Gingras, M., and Cadrett, P. 2004. IEP long-term fish monitoring program element review.
IEP Report: http://www.water.ca.gov/iep/docs/IEP_FishMonitoring_final.pdf