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News updated Nov, 2011

SYSTEM NOTICE: Friday, February 10, 2012, through Sunday February 12, 2012 there will be a planned power outage in one of our USGS facilities. This should not affect the availability of any data that we serve; however, the mapping interface which displays sites on a map will be unavailable. A follow-up notice will be sent when the power is fully restored. All real-time current data will continue to be available at http://waterdata.usgs.gov/nwis.

[!] During cold weather, ice effects on stage, ground water levels, precipitation and water quality parameters at some stream-gaging stations and wells are likely. Data values reported on these pages may be significantly higher or lower than actual values. Adjustment of data for ice effects can only be done after detailed analysis. Users are encouraged to contact this office for more information on specific stream-gaging stations or wells.

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We welcome user suggestions that provide insight into how we can make this site easier to understand. Please send all feedback to Dist. of Columbia Water Data Maintainer.

Glossary of hydrologic terms available on the USGS Water Science for schools site.
How to Cite this website in a publication.
USGS Guidelines and Standard Procedures for Studies of Groundwater Quality: Selection and Installation of Wells, and Supporting Documentation. Water-Resources Investigations Report 96-4233. USGS WRIR 96-4233 -- This is a 2.1 megabyte complete pdf file.
NATIONAL WATER INFORMATION SYSTEM (NWIS) U.S. Geological Survey, Fact Sheet FS-027-98
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U.S. Department of the Interior | U.S. Geological Survey
Title: USGS Water Data for the Nation Help System
URL: http://waterdata.usgs.gov/dc/nwis/help?

Page Contact Information: Dist. of Columbia Water Data Maintainer
Page Last Modified: 2012-02-09 23:54:21 EST
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