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 21526 samples.