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National Water Quality Assessment (NAWQA) Program

Dataset Summary

Agency	Department of the Interior
Sub-Agency	US Geological Survey
Category	Geography and Environment
Date Released	4/1/2000
Date Updated	Data is current ( daily updated)
Time Period	primarily 1991 to present day. Some older data back to 1895
Frequency	varies - from one-time collection to daily depending on purpose and collection site.
Description	National scope of NAWQA water-quality sample- and laboratory-result data and other supporting information obtained from NWIS systems hosted by individual Water Science Centers as well as national BioTDB system for aquatic biological data on communities and habitats and stored in a centralized NAWQA Data Warehouse (DWH)

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Number of Downloads

1,040

Dataset Information

Data.gov Data Category Type	Raw Data Catalog
Specialized Data Category Designation	Surveillance
Keywords	water quality data, water resources, water data, ground water, groundwater, surface water, water quality, water chemistry, streamflow, water level,
Unique ID	95

Contributing Agency Information

Citation	National Water Quality Assessment (NAWQA) Program http://water.usgs.gov/nawqa/data
Agency Program Page	National Water Quality Assessment (NAWQA) Program http://water.usgs.gov/nawqa/data
Agency Data Series Page	http://infotrek.er.usgs.gov/traverse/f?p=NAWQA:HOME:0

Dataset Coverage

Unit of Analysis	measurements, observations and analyses from ground- and surface-water bodies
Granularity	coordinate: latitude, longitude and depth below land surface in some cases like ground water or lakes.
Geographic Coverage	United States

Data Description

Collection Mode	person/paper, person/computer, phone/paper, phone/computer, web
Data Collection Instrument	multiple (http://pubs.usgs.gov/twri/)
Data Dictionary/Variable List	http://infotrek.er.usgs.gov/traverse/f?p=136:16:0::NO:::

Additional Dataset Documentation

Technical Documentation	http://infotrek.er.usgs.gov/traverse/f?p=136:16:0::NO:::
Additional Metadata	http://water.usgs.gov/nawqa/bib/

OMB Control No. 3090-0284