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Retrieving 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.

Wadeable Streams Assessment (WSA) (ZIP) (6.9MB)

Individual files from WSA available for download:

Name of Variable	Download File (.csv file)	Description of Variable (.txt file)
Bank geometry and substrate measurements	bankgeometry.csv	bankgeometry.txt
Benthic macroinvertebrate 300 counts	wsa_bencnt_genus_ts_final_part1.csv wsa_bencnt_genus_ts_final_part2.csv	wsa_bencnt_genus_ts_final.txt
Benthic macroinvertebrate 300 metrics	wsa_benmet300_ts_final.csv	wsa_benmet300_ts_final.txt
Canopy cover measured by densiometer	canopycover_part1.csv canopycover_part2.csv	canopycover.txt
Channel constraint data	channelconstraint.csv	channelconstraint.txt
Field chemistry (cond., DO, temp.)	fieldchemistry.csv	fieldchemistry.txt
In-channel fish cover ratings	fishcover.csv	fishcover.txt
Large woody debris counts	largewoody.csv	largewoody.txt
Legacy tree data	legacytree.csv	legacytree.txt
Legacy tree metrics	legacytreemet.csv	legacytreemet.txt
Mesotransect substrate data	mesosubstrate.csv	mesosubstrate.txt
Short list of best physical habitat metrics (subset of phabmet)	phabbest.csv	phabbest.txt
Physical habitat metrics	phabmet_part1.csv phabmet_part2.csv	phabmet.txt
Rapid habitat assessment	rapidhabass.csv	rapidhabass.txt
Rapid habitat assessment metrics	rapidhabmetrics.csv	rapidhabmetrics.txt
Visual riparian estimates	riparian.csv	riparian.txt
Post-Sampling Site Info and Survey Design	wsa_siteinfo_ts_final.csv	wsa_siteinfo_ts_final.txt
Stream velocity	streamvelocity.csv	streamvelocity.txt
Thalweg data	thalweg_part1.csv thalweg_part2.csv thalweg_part3.csv	thalweg.txt
Stream verification	verification.csv	verification.txt
Water chemistry	waterchemistry.csv	waterchemistry.txt
Watershed metrics	watershedstressor.csv	watershedstressor.txt




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