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Site Number: 404535073370002 - N 8269. 2


 
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DESCRIPTION:
Latitude 40°45'35", Longitude 73°37'00"   NAD27
Nassau County, New York, Hydrologic Unit 02030202
Well depth: 86. feet
Land surface altitude: 111.7feet above NGVD29.
Well completed in "Northern Atlantic Coastal Plain aquifer system" (S100NATLCP) national aquifer.
Well completed in "Magothy Aquifer" (211MAGT) local aquifer
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     2007-10-01  2021-11-16  
 Daily Data
    Groundwater level above NGVD 1929, feet  2002-07-20  2021-11-15  6820 
 Daily Statistics 
    Groundwater level above NGVD 1929, feet  2002-07-20  2021-05-25 6646 
 Monthly Statistics 
    Groundwater level above NGVD 1929, feet  2002-07  2021-05  
 Annual Statistics 
    Groundwater level above NGVD 1929, feet  2002  2021  
 Field groundwater-level measurements 1976-06-29  2021-11-16  540 
Field/Lab water-quality samples
 Water-Year Summary 2005  2020  13 

Additional Data Sources

Begin Date

End Date

Count
 Groundwater Watch  **offsite** 1976  2021  7236 
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: 42.96 on 11/16/2021
Period of Record Monthly Statistics for 404535073370002
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
Jan60.1262.2963.8267.9469.0671.5 72.8518
Feb60.2662.3664 67.8569.1 71.4272.7718
Mar60.7763.1564.1667.6969.4 71.4372.5519
Apr61.1463.3864.7 67.9870 72.0972.2918
May61.2863.8865.2668.6169.6672.0472.3919
Jun62.2263.4866 68.4770.4372 72.2 17
Jul59.5562.8364.0467.9569.3471.7471.9519
Aug59.2263.0363.7267.5 69.1171.1 71.9819
Sep59.4262.9263.7567.4768.8571.9 72.2 19
Oct59.5162.7763.8567.2268.7371.6872.5319
Nov59.6362.7963.7567.3668.7871.5272.6819
Dec59.7762.7163.8667.4 68.9371.4 72.8119
.As of 12/5/2021 09:53-M
   Statistics Options

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Daily Groundwater Data

Most recent Provisional daily data value: 68.79 on 11/15/21
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
07/20/0205/25/21 6,64696
Lowest
Level
5th
%ile
10th
%ile
25th
%ile
50th
%ile
75th
%ile
90th
%ile
95th
%ile
Highest
Level
59.0562.2263.0564.1767.6669.2071.3972.0972.98

Daily Data Options

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Periodic Groundwater Data


Summary for Period of Record Periodic Water Levels
Depth to water level, feet below land surface
Approved Periodic Water Level Values
Begin DateEnd DateNumber of Values
06/29/7611/16/21538
Highest WLDate of Highest WLLowest WLDate of Lowest WL
37.5205/21/8052.5009/20/02

Groundwater Levels Options

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Note: The most recent measurement on 11/16/2021 has the following status:
''
Period of Record - All Data Types

Summary for Period of Record - All Data Types
Depth to water level, feet below land surface
Begin DateEnd DateNumber of Values
07/20/0209/19/216,764
Lowest WLDate of Lowest WLHighest WLDate of Highest WL
59.0508/28/0272.9801/13/12

Period of Record Options

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