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News - updated November 2009
 

Tuesday Nov 24, 2009 - We have discovered that the Channel velocity (chan_velocity) and Channel area (chan_area) are transposed in the html (and rdb ) outputs. The USGS Water Data for the Nation team is investigating the problem and is giving it our highest priority. We appreciate your patience while we fix the problem.

Water Quality Samples for Dist. of Columbia

All Data Times In MD-DE-DC Are Eastern Standard Time


Some complex retrievals may take a few minutes.
Choose Site Selection Criteria
Found 134 sites in Dist. of Columbia with water-quality data. Choose from the following criteria to constrain the number of sites selected.
          Site
    -- Location -- 		          Site
    -- Identifier -- 		          Site
    -- Attribute -- 		          Data
    -- Attribute * --
County or county equivalent. i.e. Parish, Province, Municipio
Subsection of a major riversheds in a state
Latitude and longitude of two opposing corners in a box (NAD83 datum is assumed for DMS values.
Site names generally include river and lake names. For wells it can be the local number
Number 2 to 15 long that uniquely defines a site
Enter multiple Site numbers to display many stations at the same time
Organization identifier that set-up and administers the site. (USGS, NWS,..)
File on your computer that contains a list of Site numbers
(stream, lake, spring, precipitation, ..)
Drainage area
Enter how deep or how shallow of a well to search on
Enter how deep or how shallow of a hole to search on
National aquifer name (list sorted by code)
National aquifer name (list sorted by name)
Local aquifer name (list sorted by code)
Local aquifer name (list sorted by name)
Select sites with more than a minimum number of observations
Select sites with a period of record that includes given dates
(ground water, surface water, bottom sediments, animal tissue, ...
Enter multiple parameter codes
File on your computer that contains a list of parameter codes
All Parameters in selected groups

* Selection of more than one data attribute will include all samples that meet all conditions selected.
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Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
Title: Water Quality Samples for Dist. of Columbia: Sample Data
URL: http://waterdata.usgs.gov/dc/nwis/qwdata?

 Page Contact Information: Dist. of Columbia Water-Data Support Team
Page Last Modified: 2009-11-24 10:00:10 EST
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