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Site Number: 404757073440401 - N 9099. 1


 
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DESCRIPTION:
Latitude 40°47'57", Longitude 73°44'04"   NAD27
Nassau County, New York, Hydrologic Unit 02030201
Well depth: 71. feet
Land surface altitude: 60.0feet above NGVD29.
Well completed in "Northern Atlantic Coastal Plain aquifer system" (S100NATLCP) national aquifer.
Well completed in "Glacial Aquifer, Upper" (112GLCLU) local aquifer
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     2007-10-01  2020-12-23  
 Daily Data
    Groundwater level above NGVD 1929, feet  2002-07-20  2020-12-22  6453 
 Daily Statistics 
    Groundwater level above NGVD 1929, feet  2002-07-20  2019-11-03 6182 
 Monthly Statistics 
    Groundwater level above NGVD 1929, feet  2002-07  2019-11  
 Annual Statistics 
    Groundwater level above NGVD 1929, feet  2002  2020  
 Field groundwater-level measurements 1976-04-15  2020-12-23  499 
Field/Lab water-quality samples
 Water-Year Summary 2005  2019  12 
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

Most recent data value: 27.02 on 12/23/2020
Period of Record Monthly Statistics for 404757073440401
Groundwater level above NGVD 1929, feet
All Approved Continuous & Periodic Data Used In Analysis
Note: Highlighted values in the table indicate closest statistic to the most recent data value.
MonthLowest
Median
10th
%ile
25th
%ile
50th
%ile
75th
%ile
90th
%ile
Highest
Median
Number
of
Years
Jan15.3518.2719.1421.6826.4627.3929.0538
Feb15.1317.5720.5922.7326.9227.7 28.9635
Mar15.3717.7919.5521.6326.3627.6828.7640
Apr15.6617.9619.9 22.3926.8728.1 28.8937
May15.6717.9320.1822.4626.7428.2329.6541
Jun16.6318.1720.3122.7527.0428.2829.9838
Jul16.2618.7519.9822.2826.7628.2429.9141
Aug15.6818.5819.7322.3226.7428.2630.0841
Sep15.5318.7 19.7422.4226.7 28.2929.8140
Oct15.3717.8819.3722.1726.8928.3829.3738
Nov14.9 17.8219.3622.1326.7627.9529.1439
Dec15.4417.9 19.1821.8226.1927.4929.0941
.As of 1/17/2021 09:32-M
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Daily Groundwater Data

Most recent Provisional daily data value: 27.04 on 12/22/20
Summary for Period of Continuous Record
Groundwater level above NGVD 1929, feet
Approved Daily Mean Values Data Used in Analysis
Begin
Date
End Date Days%
Complete
07/20/0211/03/19 6,18297
Lowest
Level
5th
%ile
10th
%ile
25th
%ile
50th
%ile
75th
%ile
90th
%ile
95th
%ile
Highest
Level
21.5424.2924.6325.9026.9027.8128.7529.1530.13

Daily Data Options

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Periodic Groundwater Data


Summary for Period of Record Periodic Water Levels
Elevation above NGVD 1929, feet
Approved Periodic Water Level Values
Begin DateEnd DateNumber of Values
04/15/7612/23/20499
Lowest WLDate of Lowest WLHighest WLDate of Highest WL
14.903/27/8630.0608/01/19

Groundwater Levels Options

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Period of Record - All Data Types

Summary for Period of Record - All Data Types
Elevation above NGVD 1929, feet
Begin DateEnd DateNumber of Values
04/15/7612/23/206,952
Lowest WLDate of Lowest WLHighest WLDate of Highest WL
14.911/26/8230.1308/07/19

Period of Record Options

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Last update: Thursday, September 26, 2019 at 13:24

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