Wadeable Streams Assessment Data

The Wadeable Streams Assessment (WSA) is a first-ever statistically-valid survey of the biological condition of small streams throughout the U.S. The U.S. Environmental Protection Agency (EPA) worked with the states to conduct the assessment in 2004-2005. Data for each parameter sampled in the Wadeable Streams Assessment (WSA) are available for downloading in a series of files as comma separated values (.csv). Each .csv data file has a companion text file (.txt) that lists a dataset label and individual descriptions for each variable. Users should view the .txt files first to help guide their understanding and use of the data.