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Site Number: 404943073414701 - N 12508. 1


 
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DESCRIPTION:
Latitude 40°49'43", Longitude 73°41'47"   NAD27
Nassau County, New York, Hydrologic Unit 02030201
Well depth: 400. feet
Land surface altitude: 61feet above NGVD29.
Well completed in "Northern Atlantic Coastal Plain aquifer system" (S100NATLCP) national aquifer.
Well completed in "Lloyd Aquifer" (211LLYD) 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  2002-06-14  2020-12-22  6471 
 Daily Statistics 
    Groundwater level above NGVD 1929, feet  2002-06-14  2020-03-01 6199 
 Monthly Statistics 
    Groundwater level above NGVD 1929, feet  2002-06  2020-03  
 Annual Statistics 
    Groundwater level above NGVD 1929, feet  2002  2020  
 Field groundwater-level measurements 1995-03-16  2020-12-23  211 
Field/Lab water-quality samples
 Water-Year Summary 2005  2019  11 
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: 5.70 on 12/23/2020
Period of Record Monthly Statistics for 404943073414701
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
Jan3.343.595.547.328.299.859.9019
Feb4.145.656.667.619.089.8510.7018
Mar-3.640.833.237.109.1710.2410.9423
Apr-3.590.835.637.399.159.9110.6717
May-0.070.732.144.236.748.258.2618
Jun-3.39-3.18-0.392.273.214.416.8019
Jul-11.00-6.90-3.56-2.660.491.922.1018
Aug-9.17-7.00-3.65-2.28-0.660.661.0919
Sep-11.78-4.72-1.99-0.371.722.027.6319
Oct0.710.961.343.024.537.707.7718
Nov3.283.784.715.737.678.698.8017
Dec2.343.285.856.988.6710.0310.1719
.As of 1/16/2021 17:03-2
   Statistics Options

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Daily Groundwater Data

Most recent Provisional daily data value: 6.54 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
06/14/0203/01/20 6,19995
Lowest
Level
5th
%ile
10th
%ile
25th
%ile
50th
%ile
75th
%ile
90th
%ile
95th
%ile
Highest
Level
-13.29-4.49-3.000.484.597.479.079.8311.54

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
03/16/9512/23/20211
Lowest WLDate of Lowest WLHighest WLDate of Highest WL
-15.6503/22/0411.3802/23/12

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
03/16/9512/23/206,707
Lowest WLDate of Lowest WLHighest WLDate of Highest WL
-15.6503/22/0411.5403/10/19

Period of Record Options

View latest data on NWISWeb for all data types

View month/year statistics

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

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