These field and lab chemistry data are consistent with other CEDEN data found on this site and through the CEDEN query tool but they have not yet been loaded to CEDEN. They include data from files that have been submitted for loading since approximately December 2020 but are not yet available through the query tool.

These field and lab chemistry data are consistent with other CEDEN data found on this site and through the CEDEN query tool but they have not yet been loaded to CEDEN. They include data from files that have been submitted for loading since approximately December 2020 but are not yet available through the query tool.

This data provides results from chemistry and field analyses, from the California Environmental Data Exchange Network (CEDEN). The data set contains two provisionally assigned values (“DataQuality” and “DataQualityIndicator”) to help users interpret the data quality metadata provided with the associated result. Due to file size limitations, the data has been split into individual resources by year. The entire dataset can also be downloaded in bulk using the zip files on this page (in csv format or parquet format), and developers can also use the API associated with each year's dataset to access the data. Example R code using the API to access data across all years can be found [here](https://gist.github.com/daltare/2de1517ad1e315c4b1cad01278de96dd). Users who want to manually download more specific subsets of the data can also use the CEDEN query tool, at: https://ceden.waterboards.ca.gov/AdvancedQueryTool

(수집방법) 본 데이터는 물환경측정망 운영계획 및 조류경보제 운영매뉴얼, 환경정책기본법 제22조, 수질및수생태계보전에 관한 법률 제9조, 16조, 22조, 23조, 법 제 16조의 2(방사성물질 등의 유입 여부 조사) 및 시행규칙 제26조의 4에 따라 물환경정보시스템을 통해 자료를 수집함(데이터 한계) 수질 데이터는 물환경측정망 운영계획, 조류경보제 운영매뉴얼 등을 기준으로 각 데이터에 대한 측정주기와 측정항목이 정해져 있음

,Information about sampling locations for data from the California Environmental Data Exchange Network (CEDEN). This set of station/project combinations can be combined with other data sets from CEDEN to provide more information. CEDEN is the California State Water Board's data system for surface water quality in California, and seeks to include all available statewide data (such as that produced by research and volunteer organizations). Data in CEDEN include field, sediment and water column data collected from freshwater, estuarine, and marine environments. Examples of data in CEDEN come from laboratory, physical and biological analyses and include data types associated with chemical, toxicological, field, bioassessment, invertebrate, fish, and bacteriological assay assessments.,

,Indicator bacteria data from the California Environmental Data Exchange Network (CEDEN) and BeachWatch databases. Results include E. coli, enterococci, fecal coliforms, and total coliforms. There is some overlap with the CEDEN Water Chemistry dataset (https://data.ca.gov/dataset/surface-water-chemistry-results). Both datasets draw from the same source, but the resources here are updated more frequently to support the Safe to Swim map on the Water Boards My Water Quality portal (https://mywaterquality.ca.gov/safe_to_swim/index.html).,

Discrete water quality monitoring data from the Sacramento-San Joaquin Bay-Delta collected by the Environmental Monitoring Program. Data is also accessible via the [Environmental Data Initiative](https://portal.edirepository.org/nis/mapbrowse?scope=edi&identifier=458&revision=10).