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Interagency Ecological Program: Discrete water quality monitoring in the Sacramento-San Joaquin Bay-Delta, collected by the Environmental Monitoring Program, 2000-2018.
The Interagency Ecological Program’s (IEP) Environmental Monitoring Program (EMP) has historically monitored discrete water quality and nutrients in the San Francisco Estuary. The objectives of the EMP are to: (1) obtain consistent and accurate monthly data at established monitoring stations, (2) to provide and document information necessary to achieve compliance with salinity, flow, and dissolved oxygen standards, and (3) to report this information for the purpose of management and conservation of the upper San Francisco Estuary. This dataset is a subset of the larger EMP dataset that includes discrete water quality data collected from 2000-2018. Beginning in 2000, 11 stations were sampled for a full suite of water quality analytes while the remaining 11 were sampled for chlorophyll a and pheophytin a only, totaling 22 stations sampled each month. By 2018, that number increased to 28 stations sampled each month with the full suite of water quality analytes collected at every station. The EMP collects discrete water quality measurements 1-meter below the surface of the water and 1-meter above the bottom of the channel during high slack tide. Over the period of record, the following water quality parameters have been added: pH, total organic carbon, dissolved organic carbon, dissolved calcium, a rating score for the blue-green algae, Microcystis aeruginosa, and near bottom measurements.
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San Francisco Bay Area Network Water Quality Data for Three Projects from 2003-2024 as of 2025-01-27
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This data package was created 2025-01-27 13:30:01 by NPSTORET and includes selected project, location, and result data. Data contained in the San Francisco Bay Area Network NPSTORET back-end file (SFAN_NPSTORET_BACKEND_20250121.ACCDB) were filtered to include: Organization: - SFAN: San Francisco Bay Area Network Project: - SFAN_I&M: SFAN Long-Term Water Quality Monitoring Program - SFAN_I&M_EXTRA: SFAN Long-Term Water Quality Monitoring Program, Extra Sampling - SFAN_WQ: SFAN Pilot Monitoring for Freshwater Quality Protocol Station: - Include Trip QC And All Station Visit Results Activity Start Date (>=1/1/1901 and <=9/30/2024) Value Status: - Accepted or Certified (exported as Final) or Verified (exported as Final) or Final The data package is organized into five data tables: - Projects.csv - describes the purpose and background of the monitoring efforts - Locations.csv - documents the attributes of the monitoring locations/stations - Results.csv - contains the field measurements, observations, and/or lab analyses for each sample/event/data grouping - HUC.csv - enumerates the domain of allowed values for 8-digit and 12-digit hydrologic unit codes utilized by the Locations datatable - Characteristics.csv - enumerates the domain of characteristics available in NPSTORET to identify what was sampled, measured or observed in Results Period of record for filtered data is 2003-06-18 to 2024-09-25. This data package is a snapshot in time of multiple National Park Service projects. The most current data for these projects, which may be more or less extensive than that in this data package, can be found on the Water Quality Portal at: https://www.waterqualitydata.us/data/Result/search?project=SFAN_I&M https://www.waterqualitydata.us/data/Result/search?project=SFAN_I&M_EXTRA https://www.waterqualitydata.us/data/Result/search?project=SFAN_WQ
Assessment of water-quality in the California Sacramento-San Joaquin Delta during a North Delta directed flow action: August - October 2018 (ver. 2.0, September 2021)
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This data release documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta in the Sacramento-San Joaquin River Delta of California, USA. The data set includes nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, turbidity, and chlorophyll . Data-collection cruises were conducted under three different environmental/flow conditions in August, September, and October 2018 that coincided with conditions prior to, during, and following a directed flow action or pulse of agricultural return water organized by the California Department of Water Resources and California Natural Resources Agency .
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