Assessing spatial variability of nutrients, phytoplankton, and related water quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2022 High resolution mapping surveys

Broad-area, high-resolution, boat-based water quality mapping surveys of the Sacramento-San Joaquin Delta and Suisun Bay (Delta) of California, USA were conducted under different environmental/flow conditions in May, July, and October of 2022. The spatial and temporal variability of nutrients, phytoplankton, and related water quality parameters were assessed. This dataset includes measurements of nitrate, ammonium, orthophosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, and chlorophyll as well as information about phytoplankton community composition.

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-64fa6804d34ed30c205504a6
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 a98ff474eba2fb67449cdbdbb7113c774375d002bf553498aee5aac776ae8a11
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
  • delta
  • drinking-water-use
  • environment
  • high-resolution
  • hydrogeology
  • inlandwaters
  • liberty-island
  • lower-sacramento
  • nutrient-content-water
  • nutrients
  • phytoplankton
  • public-supply-water-use
  • real-time
  • san-joaquin-delta
  • statistical-analysis
  • suisun-bay
  • united-states
  • usgs-64fa6804d34ed30c205504a6
  • 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 2025-09-24T16:03:01.757260
metadata_modified 2025-09-24T16:03:01.757269
notes Broad-area, high-resolution, boat-based water quality mapping surveys of the Sacramento-San Joaquin Delta and Suisun Bay (Delta) of California, USA were conducted under different environmental/flow conditions in May, July, and October of 2022. The spatial and temporal variability of nutrients, phytoplankton, and related water quality parameters were assessed. This dataset includes measurements of nitrate, ammonium, orthophosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, and chlorophyll as well as information about phytoplankton community composition.
num_resources 2
num_tags 31
title Assessing spatial variability of nutrients, phytoplankton, and related water quality constituents in the California Sacramento-San Joaquin Delta at the landscape scale: 2022 High resolution mapping surveys