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Title	Central Valley Project - Reservoir Monitoring
Lead	U.S. Bureau of Reclamation [USBR]
Description	The Central Valley Project (USBR) is responsible for maintaining and monitoring water levels in several key reservoirs in California. The reservoirs of focus (largest capacity) within the CVP are Folsom, Whiskeytown, Shasta, Trinity, San Luis, and Millerton. San Luis is jointly monitored by USBR and DWR. Reservoir storage, elevation, inflow, and outflow are monitored daily, with some parameters at certain reservoirs being monitored hourly or monthly, and reported to the California Data Exchange Center (CDEC) for public access.
Science topics	Water storage, Water conveyance / infrastructure, Surface water / flow, Stage, Flood, Precipitation, Main channels, Water use / demand, Evaporation / evapotranspiration
Updated	April 29, 2022

Title	State Water Project - Reservoir Monitoring
Lead	California Department of Water Resource [DWR]
Description	The State Water Project (DWR) is responsible for maintaining and monitoring water levels in several key reservoirs in California. The reservoirs of focus (largest capacity) within the CVP are Oroville, San Luis, Pyramid, Perris, and Castaic. San Luis is jointly monitored by USBR and DWR. Reservoir storage, elevation, inflow, and outflow are monitored daily, with some parameters at certain reservoirs being monitored hourly or monthly, and reported to the California Data Exchange Center (CDEC) for public access.
Science topics	Water storage, Surface water / flow, Stage, Flood, Main channels
Updated	April 29, 2022

Title	20-mm Survey [Delta Smelt distribution monitoring]
Lead	California Department of Fish and Wildlife [CDFW]
Description	California Department of Fish and Wildlife (CDFW) conducts the 20-mm Survey annually to monitor the distribution and relative abundance of larval and juvenile Delta Smelt (Hypomesus transpacificus) in the upper San Francisco Bay Estuary. The survey began in 1995 and supplies near real-time catch data to water and fisheries managers as part of an adaptive management strategy to limit the risk of Delta Smelt entrainment during water exports Data collected: temperature, electro-conductivity, water transparency, turbidity, water volume, tidal stage, fish, and zooplankton.
Science topics	Stage, Tides, Other zooplankton, Water temperature, Turbidity, Chinook Salmon, Steelhead Trout, Green sturgeon, White Sturgeon, Delta Smelt, Longfin Smelt, Sacramento Splittail, Benthos
Updated	April 29, 2022

Title	Surface Water Monitoring
Lead	California Department of Water Resource [DWR]
Description	DWR continuously monitors surface water quality and hydrology at 49 sites within the Delta. The extensive DWR Central District Surface Water Monitoring network provides continuous data of flow magnitude and direction and general chemical water quality characteristics. Electrical conductivity (EC) is measured continuously at 24 of these stations. Measurements are recorded at 15-minute intervals and then reduced to a report format. At each EC site, equations are available to convert EC to chlorides and total dissolved solids. Several of the EC stations in the Delta also continuously monitor temperature and provide 15-minute temperature data.
Science topics	Surface water / flow, Stage, Precipitation, Water temperature, Turbidity, Conductivity
Updated	April 29, 2022

Title	Central Valley Project
Lead	U.S. Bureau of Reclamation [USBR]
Description	The CVP is one of the largest water storage and transport systems in the world, comprised of 20 reservoirs and more than 500 miles of canals. This project provides water used to irrigate more than 3 million acres of agricultural land and has a total reservoir storage of 11,363,000 acre-feet.
Science topics	Water operations / exports, Water storage, Water conveyance / infrastructure, Surface water / flow, Stage, Flood
Updated	April 29, 2022

Title	State Water Project
Lead	California Department of Water Resource [DWR]
Description	The California State Water Project (SWP) is a water storage and delivery system of reservoirs, aqueducts, power plants and pumping plants extending more than 700 miles - two-thirds the length of California. Planned, constructed, and operated by the Department of Water Resources, the SWP is the nation's largest state-built, multi-purpose, user-financed water project. It supplies water to more than 27 million people in northern California, the Bay Area, the San Joaquin Valley, the Central Coast and southern California. SWP water also irrigates about 750,000 acres of farmland, mainly in the San Joaquin Valley.
Science topics	Water operations / exports, Water storage, Water conveyance / infrastructure, Surface water / flow, Stage, Main channels, Habitat
Updated	April 29, 2022

Title	Freeport Regional Water Project
Lead	East Bay Municipal Utilities District
Description	The Freeport Regional Water Authority (FRWP) is a cooperative effort of the Sacramento County Water Agency (SCWA) and the East Bay Municipal Utility District (EBMUD) of Oakland to supply surface water from the Sacramento River to customers in central Sacramento County and the East Bay area of California.
Science topics	Surface water / flow, Stage, Drought, Environmental drivers
Updated	April 29, 2022

Title	National Water Level Observation Network [NWLON]
Lead	National Oceanic and Atmospheric Administration [NOAA]
Description	NOAAâ€™s Center for Operational Oceanographic Products and Services (CO-OPS) maintains the National Water Level Observation Network (NWLON), an observation network with more than 200 permanent water level stations on the coasts and Great Lakes. CO-OPS maintains three core observation and one modeling system. The National Water Level Observation Network (NWLON) is the foundation of the comprehensive system for observing, communicating, and assessing the impact of changing water levels nationwide. This system allows NOAA to provide the official tidal predictions for the nation. Accurate water level data is critical for safe and efficient marine navigation and for the protection of infrastructure along the coast. The NWLON also provides the national standards for tide and water level reference datums used for nautical charting, coastal engineering, international treaty regulation, and boundary determination. The NWLON is also widely recognized as the key federal component of the Integrated Ocean Observing System (IOOS).
Science topics	Stage, Tides, Waves, Flood, Sea level rise
Updated	April 29, 2022

Title	Fall Midwater Trawl Survey [FMWT]
Lead	California Department of Fish and Wildlife [CDFW]
Description	The FMWT was initiated to determine the relative abundance and distribution of age-0 striped bass (Morone saxatilis), delta smelt (Hypomesus transpacificus), longfin smelt (Spirinchus thaleichthys), American shad (Alosa sapidissima), splittail (Pogonichthys macrolepidotus), and threadfin shad (Dorosoma petenense) in the estuary. FMWT has sampled annually since it's inception in 1967, with the exceptions of 1974 and 1979, when sampling was not conducted. The FMWT samples 122 stations each month from September to December and a subset of these data is used to calculate an annual abundance index.
Science topics	Stage, Mysis, Other zooplankton, Water temperature, Turbidity, Chinook Salmon, Steelhead Trout, Green sturgeon, White Sturgeon, Delta Smelt, Longfin Smelt, Sacramento Splittail
Updated	April 29, 2022

Title	Local Maintaining Agency Annual Reporting
Lead	California Department of Water Resource [DWR]
Description	Additions to the Water Code include requirements for local levee maintaining agencies (Local Agencies) to submit to DWR, by September 30 each year, specific information relative to the Project Levees they operate and maintain. Local Agencies who maintain either (1) Project Levees or (2) Non-Project Levees that also benefit land within the boundaries of an area benefited by a Project Levee, are required to submit five categories of information annually. A Local Agency responsible for operation and maintenance of a levee not otherwise subject to these requirements may voluntarily prepare and submit to DWR or the CVFPB a flood management report for website posting The Flood Project Integrity and Inspection Branch (FPIIB) produces annual inspection reports using summarized levee data acquired through the Local Maintaining Agency Reporting Program.
Science topics	Levees, Stage, Tides, Flood
Updated	April 29, 2022

Title	Levee Inspections
Lead	California Department of Water Resource [DWR]
Description	DWR, under the authority of Water Code Â§ 8360, Â§ 8370, and Â§ 8371, performs a verification inspection of the maintenance of the SRFCP levees performed by the local responsible agencies, and reports to the USACE periodically regarding the status of levee maintenance accomplished under the provisions of Title 33, Code of Federal Regulations (CFR), Section 208.10. While there are no specific water code provisions directing DWR to inspect and report on Maintenance of the San Joaquin River Flood Control System, DWR has performed inspections and provided reports for many years as a matter of practice that is consistent with Title 33, CFR. The inspections thus verify, for both river basins, that local agencies are performing their legal and statutory responsibilities pursuant to Water Code Â§ 12642 and Â§ 12657, and are meeting their legal obligations under assurance agreements with the State to operate and maintain their flood control projects â€œon any stream flowing into or in, the Sacramento Valley or the San Joaquin Valleyâ€. The State inspects and reports only on the status of maintenance practices and on observable levee conditions. The State does not routinely conduct field studies to assess the structural integrity of the levees or their foundations as part of its annual inspection program. Beginning in 2003, the DWR Flood Project Inspection Section (FPIS) and subsequently the Flood Project Integrity and Inspection Branch (FPIIB) has conducted a field survey of the waterward erosion sites and reported them. In addition, the obvious signs of structural weakness such as longitudinal cracks in the crown or slope of the levee, sloughing, or any other noticeable sign of movement within the cross section of the levee are also reported.
Science topics	Levees, Stage, Tides, Flood
Updated	April 29, 2022

Title	Levee Waterside Erosion Surveys
Lead	U.S. Army Corps of Engineers [USACE]
Description	The USACE, with DWR sponsorship, has contracted for waterside erosion surveys of the Sacramento River system since 1998. As stated earlier, FPIIB began conducting waterside erosion surveys of the San Joaquin River portion of the State-Federal flood protection system Project levees in September of 2006. The primary purpose of these surveys is to: a) inspect the waterside levees for erosion activity, b) document and report new erosion sites, c) document and report the current condition of previously identified erosion sites, and d) rank and rate the severity of erosion sites based upon the findings from the field survey. The USACE and its contractors generate the report on erosion found in the Sacramento River system;FPIIB staff supplements their inspection reports with the USACE data as it becomes available.
Science topics	Water conveyance / infrastructure, Levees, Stage, Tides, Flood
Updated	April 29, 2022

Title	San Francisco Bay National Estuarine Research Reserve
Lead	National Oceanic and Atmospheric Administration [NOAA]
Description	The National Estuarine Research Reserve System is a network of 29 coastal sites designated to protect and study estuarine systems. Established through the Coastal Zone Management Act, the reserves represent a partnership program between NOAA and the coastal states. NOAA provides funding and national guidance, and each site is managed on a daily basis by a lead state agency or university with input from local partners.
Science topics	Stage, Air temperature, Precipitation, Wind, Solar irradiance, Nitrogen / ammonia, Phosphorous, Chlorophyll A / B, Salinity, Water temperature, Dissolved oxygen, pH, Turbidity, Intertidal / transition zones, Above-highwater refugia, Main channels, Sloughs, Backwater, Mollusks, Saltwater / freshwater marshes, Other species
Updated	April 29, 2022

Title	Telemetered Stream Gauge Stations [Surface Water Monitoring]
Lead	U.S. Bureau of Reclamation [USBR]
Description	A network of stream gauges record and telemeter river stage information. Flow measurements by field crews help calibrate and confirm calculations. Data from stream gage telemetry requires careful consideration as field conditions and equipment malfunctions can provide erroneous readings. A more accurate assessment of actual flow rates requires a review of the flow record and processing to account for actual conditions.
Science topics	Water operations / exports, Water conveyance / infrastructure, Surface water / flow, Stage, Flood, Main channels, Sloughs
Updated	April 29, 2022

Title	Landsat Science Program
Lead	Goddard Space Flight Center
Description	Multispectral earth imaging satellite acquires data for earth observation. Numerous applications and extensive history of success with environmental and land use programs.
Science topics	Levees, Dredging, Forest harvesting, Agriculture, Urban development, Roads and bridges, Rail lines, Docks and ports, Surface water / flow, Groundwater, Stage, Direction, Tides, Residence time, Waves, Flood, Drought, Wildfire, Harmful algal blooms HAB, Phytoplankton, Suspended sediment, Turbidity, Mudflats, Intertidal / transition zones, Above-highwater refugia, Main channels, Sloughs, Backwater, Submerged aquatic vegetation, Floating aquatic vegetation, Seasonally flooded, Open water, Managed ponds, Riparian wildlife, Forests, Non-forested vegetation, Delta islands, Pacific flyway, Saltwater / freshwater marshes, Habitat, Energy and mines, Snowpack / snow water equivalent SWE
Updated	April 29, 2022

Title	Sentinel Satellite
Lead	European Space Agency
Description	Earth observation using multispectral imagery from satellites. Especially suitable for monitoring changes in land cover.
Science topics	Levees, Dredging, Forest harvesting, Agriculture, Urban development, Recreation & tourism, Surface water / flow, Groundwater, Stage, Velocity, Direction, Tides, Residence time, Waves, Flood, Drought, Land elevation, Subsidence, Sea level rise, Seismicity, Wildfire, Air temperature, Precipitation, Wind, Extreme heat, Extreme storms, Suspended sediment, Water temperature, Mudflats, Intertidal / transition zones, Above-highwater refugia, Main channels, Sloughs, Backwater, Submerged aquatic vegetation, Floating aquatic vegetation, Seasonally flooded, Open water, Managed ponds, Riparian wildlife, Forests, Non-forested vegetation, Delta islands, Pacific flyway, Saltwater / freshwater marshes, Habitat, Energy and mines, Snowpack / snow water equivalent SWE, Water intakes, fish screens & passage
Updated	April 29, 2022

Title	WorldView-3
Lead	DigitalGlobe
Description	Provides commercial satellite services. Multiple satellites continuously collecting multispectral imagery throughout the globe. Available for download and processing by end users.
Science topics	Levees, Forest harvesting, Agriculture, Urban development, Recreation & tourism, Roads and bridges, Rail lines, Docks and ports, Surface water / flow, Stage, Direction, Tides, Residence time, Flood, Drought, Land elevation, Subsidence, Sea level rise, Seismicity, Wildfire, Suspended sediment, Erosion, Turbidity, Mudflats, Intertidal / transition zones, Above-highwater refugia, Main channels, Sloughs, Backwater, Submerged aquatic vegetation, Floating aquatic vegetation, Seasonally flooded, Open water, Managed ponds, Riparian wildlife, Forests, Non-forested vegetation, Delta islands, Pacific flyway, Saltwater / freshwater marshes, Energy and mines, Snowpack / snow water equivalent SWE, Vessels and shipping channels
Updated	April 29, 2022

Title	Juvenile Salmonid Monitoring - Red Bluff Diversion Dam
Lead	U.S. Fish and Wildlife Service [USFWS]
Description	The Red Bluff Fish and Wildlife Office (RBFWO) established a juvenile fish monitoring program using rotary-screw traps at the Red Bluff Diversion Dam (RBDD) in 1994. The primary objectives of this project at present are to (1) obtain juvenile winter Chinook production indices and to correlate these indices with estimated escapement from adult estimates provided by the winter Chinook carcass survey, (2) define seasonal and temporal patterns of abundance of winter, spring, fall and late-fall run Chinook salmon and steelhead trout passing RBDD and (3) obtain relative abundance information (catch per unit volume) for green sturgeon and lamprey to monitor trends in abundance.
Science topics	Water conveyance / infrastructure, Surface water / flow, Stage, Velocity, Water temperature, Turbidity, Chinook Salmon, Steelhead Trout, Green sturgeon, Water intakes, fish screens & passage
Updated	April 29, 2022

Title	Smelt Larva Survey
Lead	California State Water Resources Control Board [SWRCB]
Description	The Smelt Larva Survey provides near real-time distribution data for longfin smelt larvae in the Delta, Suisun Bay and Suisun Marsh. Sampling takes place within the first two weeks in January and repeats every other week through the second week in March. Each 4-day survey consists of a single 10-minute oblique tow conducted at each of the 35 survey locations (see map) using an egg and larva net. The 505-micron mesh net is hung on a rigid frame shaped like an inverted-U, which in turn is attached to skis to prevent it from digging into the bottom when deployed. The net mouth area measures 0.37 m2. The conical net tapers back from the frame 3.35 m to a 1-liter cod-end jar, which collects and concentrates the sample. Immediately after each tow, juvenile fishes are removed, identified, measured and returned to the water immediately, and the remaining larvae are preserved in 10% formalin for later identification in the Lab in Stockton.
Science topics	Stage, Salinity, Water temperature, Turbidity, Main channels, Sloughs, Chinook Salmon, Steelhead Trout, Green sturgeon, White Sturgeon, Delta Smelt, Longfin Smelt, Sacramento Splittail, Conductivity
Updated	April 29, 2022

Title	Spring Kodiak Trawl Survey
Lead	California Department of Fish and Wildlife [CDFW]
Description	The Spring Kodiak Trawl Survey (SKT) has sampled annually since its inception in 2002. The SKT determines the relative abundance and distribution of spawning delta smelt (Hypomesus transpacificus). The SKT samples 40 stations each month from January to May. These 40 stations range from San Pablo Bay upstream to Stockton on the San Joaquin River, Walnut Grove on the Sacramento River, and the Sacramento Deep Water Ship Channel. Each 'Delta-wide' survey takes approximately 4 - 5 days per month to complete. Historically, 'Delta-wide' surveys were followed by a 'Supplemental' survey two weeks later to intensively sample areas of highest delta smelt concentration to estimate the proportion of male and female delta smelt that were in pre-spawning, spawning and spent maturation stages. Beginning in 2008, in an effort to minimize take of spawning adults, routine 'Supplemental' surveys were discontinued and are now only conducted under the recommendation of the Smelt Working Group and the approval of managers.
Science topics	Stage, Salinity, Water temperature, Turbidity, Main channels, Sloughs, Chinook Salmon, Steelhead Trout, Green sturgeon, White Sturgeon, Delta Smelt, Longfin Smelt, Sacramento Splittail, Conductivity, Other species
Updated	April 29, 2022

Title	Suisun Marsh Fish Study
Lead	University of California - Davis [UC Davis]
Description	The University of California, Davis has been involved in fish and wildlife monitoring and research within Suisun Marsh for 35 years and has been instrumental in detecting important trends associated with naturally fluctuating environmental conditions as well as anthropogenic influences. Research has included a 35+ year time series on the fish and invertebrate communities of the slough networks, research on waterfowl nesting patterns and population biology, and research on the demography of salt marsh harvest mouse. The Suisun Marsh Fish Study anchors this effort as it is the longest established survey in Suisun marsh. It will continue the research of Professor Peter Moyle under the direction of John Durand, and will focus upon the detection of changes in the aquatic ecosystem in response to developing stressors in the San Francisco Estuary (SFE). This time series is designed to further our understanding of the ecology and function of the fish community residing within Suisun Marsh and the San Francisco Estuary (SFE), and acts as one of the key surveys with Interagency Ecological Program's monitoring effort.
Science topics	Stage, Tides, Salinity, Water temperature, Dissolved oxygen, Main channels, Sloughs, Chinook Salmon, Steelhead Trout, Green sturgeon, White Sturgeon, Delta Smelt, Longfin Smelt, Sacramento Splittail, Pelagic fish, Benthos, Salt marsh harvest mouse, Mollusks, Crustaceans, Striped bass, Corbicula/Potamocorbula, Conductivity, Environmental drivers, Other species, Fish, Invertebrates
Updated	April 29, 2022

Title	Yolo Bypass Fish Monitoring
Lead	California Department of Water Resource [DWR]
Description	California Department of Water Resources (DWR) has operated a fisheries monitoring program in the Yolo Bypass, a seasonal floodplain and tidal slough, since 1998. The objectives of the Yolo Bypass Fish Monitoring Program (YBFMP) are to: (1) collect baseline data on lower trophic levels (phytoplankton, zooplankton, and aquatic insects), juvenile fish and adult fish, hydrology, and water quality parameters;(2) investigation of the temporal and seasonal patterns in chlorophyll-a concentrations, including whether high concentrations are exported from the Bypass during agricultural and natural flow events and the possibility of manipulating bypass flows to benefit listed species like Delta Smelt (Hypomesus transpacificus) and Chinook salmon (Oncorhynchus tshawytscha). The YBFMP operates a rotary screw trap and fyke trap, and conducts biweekly beach seine and lower trophic surveys in addition to maintaining water quality instrumentation in the bypass. The YBFMP serves to fill information gaps regarding environmental conditions in the bypass that trigger migrations and enhanced survival and growth of native fishes, as well as provide data for IEP synthesis efforts.
Science topics	Chinook Salmon, Chlorophyll A / B, Conductivity, Delta Smelt, Direction, Dissolved oxygen, Endangered species, Fish, Flood, Food webs, Green sturgeon, Habitat, Habitat restoration, Insects, Intertidal / transition zones, Invasive / non native species, Invertebrates, Longfin Smelt, Main channels, Nitrogen, Nitrogen / ammonia, Nutrients, Other species, Other zooplankton, Pelagic fish, pH, Phytoplankton, Primary production, Sacramento Splittail, Salmon migration, Salmon rearing, Saltwater / freshwater marshes, SAV/FAV, Seasonally flooded, Solar irradiance, Stage, Steelhead Trout, Striped bass, Sturgeon, Submerged aquatic vegetation, Surface water / flow, Tides, Turbidity, Velocity, Water, Water temperature, Wetlands, White Sturgeon, Zooplankton
Updated	August 28, 2024

Title	Sacramento District Water Control Data System [WCDS]
Lead	U.S. Army Corps of Engineers [USACE]
Description	The Sacramento District's Water Control Data System (WCDS) collects data necessary for the management of Corps Reservoirs and Flood Control Space in Non-Corps Reservoirs (i.e.,"Section 7" projects)
Science topics	Water operations / exports, Water storage, Water conveyance / infrastructure, Wastewater discharge, Surface water / flow, Stage, Flood, Air temperature, Precipitation, Wind, Main channels, Sloughs, Environmental drivers, Snowpack / snow water equivalent SWE, Water use / demand
Updated	April 29, 2022

Title	Continuous Monitoring of Water Quality & Suspended-Sediment Transport [Bay-Delta]
Lead	U.S. Geological Survey [USGS]
Description	Our group at the USGS continuously monitors suspended-sediment concentration (SSC), turbidity, dissolved oxygen, temperature, salinity, and water level at many sites throughout the San Francisco Bay (Bay) and the Sacramento-San Joaquin Rivers Delta (Delta). Our work began in 1988 to explore the spatial and temporal variability of water quality and sediment transport and to provide decision makers, resource managers, and the public with the most up-to-date knowledge. Topics we study include water quality, sediment transport, water clarity, erosion and deposition, sediment-associated contaminants and habitat quality, wetland restoration, and sea level rise.
Science topics	Water operations / exports, Water storage, Water conveyance / infrastructure, Surface water / flow, Stage, Velocity, Suspended sediment, Bedload, Deposition, Erosion, Chemistry, Toxicity, Salinity, Water temperature, Dissolved oxygen, Turbidity, Other discharge contaminants, Intertidal / transition zones, Main channels, Sloughs, Open water, Riparian wildlife, Conductivity, Water use / demand, Water intakes, fish screens & passage
Updated	April 29, 2022

Title	Regional Monitoring Program for Water Quality in San Francisco Bay
Lead	U.S. Geological Survey [USGS]
Description	The Regional Monitoring Program for Water Quality in San Francisco Bay (RMP) is SFEI's largest program. It provides the information that regulators and decision-makers need to manage the Bay effectively. The RMP is an innovative collaborative effort between SFEI, the Regional Water Quality Control Board, and the regulated discharger community.
Science topics	Stage, Solar irradiance, Nitrogen / ammonia, Phosphorous, Carbon, Chlorophyll A / B, Suspended sediment, Salinity, Water temperature, Dissolved oxygen, Turbidity, Hg and methyl mercury, Copper, Selenium, Other discharge contaminants, Main channels, Conductivity, Habitat
Updated	April 29, 2022

Title	Streamflow Monitoring
Lead	U.S. Geological Survey [USGS]
Description	The USGS works in partnership with more than 1,400 Federal, regional, State, Tribal, and local agencies or organizations to maintain and manage a multipurpose network of streamgages that monitor streamflow and (or) water level. Approximately 8,200 of the more than 10,000 USGS streamgages in the network continuously monitor streamflow year-round and are collectively referred to as the National 'Streamflow' Network (NSN). Approximately 40% of the NSN is made up of Federal Priority Streamgages (FPS), which are considered critical for long-term tracking and modeling/forecasting to ensure that Federal water priorities and responsibilities can be met. Such priorities and responsibilities include forecasting hydrologic events (floods and droughts);managing interstate agreements, compacts, court decrees, and other legal obligations;and tracking streamflow in major river basins and across borders.
Science topics	Water operations / exports, Water storage, Water conveyance / infrastructure, Wastewater discharge, Surface water / flow, Stage, Velocity, Direction, Flood, Main channels, Sloughs, Backwater, Stormwater runoff / drainage, Water use / demand
Updated	April 29, 2022

Title	Assessing sea-level rise and flooding changes in the Sacramento/San Joaquin Delta using historical water-level records
Lead	California State University [CSU]
Description	The project aims to recover, digitize, and analyze more than 1300 station years of ‘lost-and-forgotten’ water level records collected from 1857 to 1982 in the Sacramento-San Joaquin Delta. These measurements, augmented by modern data, will improve our understanding of tidal, flood, and sea level trends in the system. By determining ‘hotspots’ of habitat and flood risk sensitivity, the results may be used to better focus future scientific and management priorities, to protect the environment, manage flood risk, and enhance community resilience to climate change
Science topics	Backwater, Climate change, Environmental drivers, Estuaries, Land elevation, Levees, Outflow, Sea level rise, Stage, Subsidence, Surface water / flow, Tides, Velocity, Vessels and shipping channels, Water, Wind
Updated	October 10, 2023

Title	Continuous Flow and Water Quality Monitoring Network in the Sacramento-San Joaquin Delta
Lead	U.S. Geological Survey [USGS]
Description	This project envisions the continuation, expansion, and further integration of high frequency monitoring for flow, water quality (including chlorophyll and nutrients), sediment, as well as biological responses at key locations in the Delta and Suisun Bay. The physical properties monitored by the fixed-station network are the primary drivers of the habitat conditions and biological responses that management actions hope to achieve. Nutrient dynamics are explicitly measured at select stations to improve our understanding of how physical dynamics, water quality and landscape features shape the base of Delta food webs. These data will provide information about drivers linked to food quantity and quality as well as potential toxins production by harmful algae. Suspended-sediment monitoring provides an understanding of the inputs and internal exchanges between regions, locations of sources and sinks, and provides insight into the underlying cause of turbidity variability in the study area. Suspended-sediment measurements gage the availability of suspended sediment for existing marshes and for proposed large-scale marsh restoration efforts in the Delta. There are a total of 5 sub-tasks in this project: • Task 1: Hydrodynamics Team – Fixed Station Network Operation and Maintenance • Task 2: BioGeoChemistry Team -- Fixed Station Network Operation and Maintenance • Task 3: Delta Sediment Team – Fixed Station Network Operation and Maintenance • Task 4: Bay Sediment Team – Fixed Station Network Operation and Maintenance • Task 5: Project Management
Science topics	Chlorophyll A / B, Conductivity, Dissolved oxygen, Flows, Nutrients, pH, Phytoplankton, Sediments, Stage, Surface water / flow, Tides, Turbidity, Velocity, Water operations / exports, Water temperature
Updated	January 19, 2024

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