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Groundwater Watch

Site Number: 404925073405401 - N 12321. 1

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Watch Help Page

DESCRIPTION:: Latitude 40°49'25", Longitude 73°40'54" NAD27
Nassau County, New York, Hydrologic Unit 02030201; Land surface altitude: 154 feet above sea level NGVD29.
Well completed in "Northern Atlantic Coastal Plain aquifer system" (S100NATLCP) national aquifer.

AVAILABLE DATA FROM NWISWeb:

Field ground-water-level measurements
Field/Lab water-quality samples
Additional Data Sources	Begin Date	End Date	Count
Annual Water-Data Report (pdf) offsite	2005	2006	2

OPERATION:: Record for this site is maintained by the USGS New York Water Science Center; Email questions about this site to New York Water Science Center Water-Data Inquiries

Site Statistics

Monthly statistics plot for 404925073405401

Most recent data value: 18.57 on 12/16/2008
Period of Record Monthly Statistics for 404925073405401
Elevation above NGVD 1929, feet
All Approved Continuous & Periodic Data Used In Analysis
Note: Bold values in the table indicate closest statistic to the most recent data value.
Month Lowest
Level 10th
%ile 25th
%ile 50th
%ile 75th
%ile 90th
%ile Highest
Level Number
of
Years
Jan 17.34 -   -   -   -   -   20.55 7
Feb 18.24 -   -   -   -   -   20.16 5
Mar 16.52 16.73 17.79 18.48 19.93 20.85 20.90 12
Apr 18.06 -   -   -   -   -   20.76 5
May 15.43 -   -   -   -   -   20.67 8
Jun 13.35 -   -   -   -   -   18.30 9
Jul 10.94 -   -   -   -   -   17.83 7
Aug 11.99 -   -   -   -   -   17.22 8
Sep 12.54 -   -   -   -   -   16.84 9
Oct 15.40 -   -   -   -   -   18.42 7
Nov 16.46 -   -   -   -   -   19.66 7
Dec 16.55 16.58 17.14 17.74 18.95 19.96 20.05 10

   Statistics Options

    View month/year statistics

Periodic Groundwater Data

Groundwater hydrograph for well 404925073405401

Summary Statistics for Period of Record Periodic Water Levels

Elevation above NGVD 1929, feet

Approved Periodic Water Level Values

Begin Date

End Date

Number of Values

03/31/94

12/16/08

Lowest WL	Date of Lowest WL	Highest WL	Date of Highest WL
10.94	07/22/02	20.90	03/27/07

	Groundwater Levels Options
	View NWISWeb Groundwater levels page
	View annual monthly statistics for all data types
	Download Groundwater levels in text format

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URL: http://groundwaterwatch.usgs.gov/AWLSites.asp
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Last update: Monday, September 14, 2009 at 11:44