WARNING: TEST ENVIRONMENT
Do not use these data for analysis

BioData - Aquatic Bioassessment Data for the Nation

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The U.S. Geological Survey (USGS) collects fish-, aquatic macroinvertebrate-, and algae-community samples and conducts stream physical habitat surveys as part of its fundamental mission to describe and understand the Earth.

Download your data in three steps: 1) On this page select filter criteria; 2) on the next page, choose data set(s), and; 3) on the third page, preview your data and select a download format.


Choose filters and set filter criteria from one or more sections, then select the "Next" button to go to the Select Data Set(s) page.





Help with Filter Criteria

Filter(s) "None" will return 22622 samples.


Biological Community/Data Type and Sample Type Filter
Geographic Location Filter
Site Characteristic Filter



You may select multiple Site Characteristic filters. Not all sites have information on elevation and drainage area. Such sites will not be retrieved using these search criteria.




Temporal Filter
Organization / Program Filter
Taxon-specific Filter (Advanced)
Sample-specific Filter (Advanced)