Assessing spatial variability of nutrients, phytoplankton and related water-quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2020-2021 High-resolution mapping surveys

The dataset documents the spatial and temporal variability of nutrients, phytoplankton, and related water quality parameters at high spatial resolution in the Sacramento-San Joaquin River Delta and Suisun Bay of California, USA. The dataset includes nitrate, ammonium, orthophosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, and chlorophyll as well as information about phytoplankton community composition. Data were collected under different environmental/flow conditions in June, July, August, and October of 2020, and May, July, and October of 2021. The data release consists of a .xml document, and .txt and shapefile documents. Descriptions for each document and file are listed in the metadata.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://ddi.doi.gov/usgs-data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier http://datainventory.doi.gov/id/dataset/usgs-5f24747f82cef313ed971974
metadata_type geospatial
modified 2025-07-10T00:00:00Z
old-spatial -122.1325, 37.8290, -121.3320, 38.5705
publisher U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 920cab601ac8627bec03e35169afc59bc7522cea7f0eff15ae998abffa367726
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-122.1325, 37.8290], [-122.1325, 38.5705], [ -121.3320, 38.5705], [ -121.3320, 37.8290], [-122.1325, 37.8290]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • biogeochemistry
  • biota
  • california
  • central-valley
  • delta
  • drinking-water-use
  • environment
  • high-frequency
  • high-resolution
  • hydrogeology
  • inlandwaters
  • liberty-island
  • nutrient-content-water
  • nutrients
  • phytoplankton
  • public-supply-water-use
  • real-time
  • sacramento-river
  • sacramento-san-joaquin-delta
  • statistical-analysis
  • suisun-bay
  • united-states
  • usgs-5f24747f82cef313ed971974
  • visualization-methods
  • water-quality
isopen False
license_id notspecified
license_title License not specified
maintainer Katy O'Donnell
maintainer_email kodonnell@usgs.gov
metadata_created 2025-09-23T22:55:13.816002
metadata_modified 2025-09-23T22:55:13.816008
notes The dataset documents the spatial and temporal variability of nutrients, phytoplankton, and related water quality parameters at high spatial resolution in the Sacramento-San Joaquin River Delta and Suisun Bay of California, USA. The dataset includes nitrate, ammonium, orthophosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, and chlorophyll as well as information about phytoplankton community composition. Data were collected under different environmental/flow conditions in June, July, August, and October of 2020, and May, July, and October of 2021. The data release consists of a .xml document, and .txt and shapefile documents. Descriptions for each document and file are listed in the metadata.
num_resources 2
num_tags 33
title Assessing spatial variability of nutrients, phytoplankton and related water-quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2020-2021 High-resolution mapping surveys