Return to search results
Surface Water - Benthic Macroinvertebrate Results
Data collected for marine benthic infauna, freshwater benthic macroinvertebrate (BMI), algae, bacteria and diatom taxonomic analyses, from the [California Environmental Data Exchange Network](https://ceden.org/) (CEDEN). Note bacteria single species concentrations are stored within the chemistry template, whereas abundance bacteria are stored within this set. Each record represents a result from a specific event location for a single organism in a single sample.
The data set contains two provisionally assigned values (“DataQuality” and “DataQualityIndicator”) to help users interpret the data quality metadata provided with the associated result.
Zip files are provided for bulk data downloads (in csv or parquet file format), and developers can use the API associated with the "CEDEN Benthic Data" (csv) resource to access the data.
Users who want to manually download more specific subsets of the data can also use the **[CEDEN Query Tool](https://ceden.org/find_data_page.shtml)**, which provides access to the same data presented here, but allows for interactive data filtering.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| contactPoint |
{
"fn": "California Environmental Data Exchange Network (CEDEN)",
"@type": "vcard:Contact",
"hasEmail": "mailto:ceden@waterboards.ca.gov"
}
|
| description | Data collected for marine benthic infauna, freshwater benthic macroinvertebrate (BMI), algae, bacteria and diatom taxonomic analyses, from the [California Environmental Data Exchange Network](https://ceden.org/) (CEDEN). Note bacteria single species concentrations are stored within the chemistry template, whereas abundance bacteria are stored within this set. Each record represents a result from a specific event location for a single organism in a single sample. The data set contains two provisionally assigned values (“DataQuality” and “DataQualityIndicator”) to help users interpret the data quality metadata provided with the associated result. Zip files are provided for bulk data downloads (in csv or parquet file format), and developers can use the API associated with the "CEDEN Benthic Data" (csv) resource to access the data. Users who want to manually download more specific subsets of the data can also use the **[CEDEN Query Tool](https://ceden.org/find_data_page.shtml)**, which provides access to the same data presented here, but allows for interactive data filtering. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "CEDEN Benthic Data",
"format": "CSV",
"mediaType": "text/csv",
"describedBy": "https://data.ca.gov/api/action/datastore_search?resource_id=3dfee140-47d5-4e29-99ae-16b9b12a404f&limit=0",
"downloadURL": "https://data.ca.gov/dataset/c14a017a-8a8c-42f7-a078-3ab64a873e32/resource/3dfee140-47d5-4e29-99ae-16b9b12a404f/download/benthicdata_2026-01-09.csv",
"describedByType": "application/json"
},
{
"@type": "dcat:Distribution",
"title": "Data Dictionary - CEDEN Benthic Data",
"format": "CSV",
"mediaType": "text/csv",
"description": "Data Dictionary for https://data.ca.gov/dataset/c14a017a-8a8c-42f7-a078-3ab64a873e32/resource/3dfee140-47d5-4e29-99ae-16b9b12a404f/download/benthicdata_2026-01-09.csv",
"downloadURL": "https://data.ca.gov/datastore/dictionary_download/3dfee140-47d5-4e29-99ae-16b9b12a404f",
"isDataDictionary": true
},
{
"@type": "dcat:Distribution",
"title": "CEDEN Benthic Data (Parquet File Format)",
"format": "ZIP",
"mediaType": "application/zip",
"description": "This resource contains all benthic macroinvertebrate data available from the CEDEN database, in the [Apache Parquet file format]((https://parquet.apache.org/)). The data is partitioned by year.
Parquet is a free and open source data storage format that allows for fast and efficient processing of large datasets. It is compatible with a variety of data analysis platforms, including the R and Python programming languages, through the [Apache Arrow platform](https://arrow.apache.org/). An example showing how to use this data with the R programming language is available [here](https://gist.github.com/daltare/209acf0789b4f1bdec272c323ba45315).",
"downloadURL": "https://data.ca.gov/dataset/c14a017a-8a8c-42f7-a078-3ab64a873e32/resource/eb61f9a1-b1c6-4840-99c7-420a2c494a43/download/benthicdata_parquet_2026-01-09.zip"
},
{
"@type": "dcat:Distribution",
"title": "CEDEN Benthic Data (Zipped CSV)",
"format": "ZIP",
"mediaType": "application/zip",
"description": "Zipped CSV file containing all benthic data from the California Environmental Data Exchange Network (CEDEN).",
"downloadURL": "https://data.ca.gov/dataset/c14a017a-8a8c-42f7-a078-3ab64a873e32/resource/15349797-6cfc-4ef9-92ab-0ed36512de93/download/benthicdata_2026-01-09.zip"
},
{
"@type": "dcat:Distribution",
"title": "CEDEN Benthic Data Dictionary",
"format": "PDF",
"mediaType": "application/pdf",
"downloadURL": "https://data.ca.gov/dataset/c14a017a-8a8c-42f7-a078-3ab64a873e32/resource/95e5056b-095a-48f1-8fb3-f91463168395/download/ceden-benthic-data-dictionary.pdf"
}
]
|
| identifier | c14a017a-8a8c-42f7-a078-3ab64a873e32 |
| issued | 2019-08-10T04:03:08.517396 |
| keyword |
[
"Assessment",
"Benthic",
"Bioaccumulation",
"Bioassessment",
"CEDEN",
"Contaminant",
"Organisms",
"Pollutant",
"Sediment",
"Surface Water",
"Taxonomy",
"Water Quality"
]
|
| modified | 2026-01-10T01:06:39.983727 |
| publisher |
{
"name": "California State Water Resources Control Board",
"@type": "org:Organization"
}
|
| theme |
[
"Water"
]
|
| title | Surface Water - Benthic Macroinvertebrate Results |
