USGS Water-Quality Information
USGS personnel collect a water-quality sample on the Missouri River. USGS/Photo by Kelly Brady.
Water Quality Data
National Water Information System (NWIS)
NWIS provides current and historical water-quality data.
Today's Water Conditions
Water-Quality Watch provides continuous real-time water-quality measurements.
Water-Quality Web Services
Web services automate the sharing of USGS and USEPA water-quality monitoring data.
For More Data
Additional water-quality data resources are available.
USGS in Your Area
USGS Water Science Centers are located in each state.
Revised 2005 By Franceska D. Wilde
Chapter 1 is available only as a pdf file:
Download a copy of Adobe Acrobat Reader for free.
The National Field Manual for the Collection of Water-Quality Data (National Field Manual) provides guidelines and standard procedures for U.S. Geological Survey (USGS) personnel who collect data used to assess the quality of the Nation's surface-water and ground-water resources. This chapter addresses field-trip preparations, including selection of sample-collection sites for studies of surface-water quality, site reconnaissance and well selection for studies of ground-water quality, and the establishment of electronic files and field files and folders for a sampling site.
Each chapter of the National Field Manual is published separately and revised periodically. Newly published and revised chapters are posted on the World Wide Web on the USGS page "National Field Manual for the Collection of Water-Quality Data." The URL for this page is http://pubs.water.usgs.gov/twri9A/ (accessed Jan. 31, 2005).
Sections of Chapter A1:
Purpose and scope
Requirements and recommendations
Field manual review and revision
1.0 Field-personnel responsibilities
1.1 Field-trip preparations
1.1.1 Checklists of equipment, supplies, and activities
1.1.2 Data-quality plans and preparations
1.2 Surface water
1.2.1 Selection of sampling sites
1.2.1.A Flowing-water sites
1.2.1.B Still-water sites
1.2.2 National Water Information System (NWIS) files and field folders
1.2.2.A NWIS files
1.2.2.B Field folders
1.3 Ground water
1.3.1 Site reconnaissance and well selection
1.3.2 National Water Information system (NWIS) files; well files; and field folders
1.3.2.A NWIS files
1.3.2.B Well files
1.3.2.C Field folders
Selected references and documents
For more information