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Site Number: 404818073293101 - N 11454. 1


 
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DESCRIPTION:
Latitude 40°48'18", Longitude 73°29'31"   NAD27
Nassau County, New York, Hydrologic Unit 02030202
Well depth: 595. feet
Hole depth: 620. feet
Land surface altitude: 207.5feet 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  2020-12-23  
 Daily Data
    Groundwater level above NGVD 1929, feet  2002-08-16  2020-12-22  5909 
 Daily Statistics 
    Groundwater level above NGVD 1929, feet  2002-08-16  2019-07-13 5527 
 Monthly Statistics 
    Groundwater level above NGVD 1929, feet  2002-08  2019-07  
 Annual Statistics 
    Groundwater level above NGVD 1929, feet  2002  2019  
 Field groundwater-level measurements 1991-03-20  2020-12-23  233 
 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: 77.63 on 12/23/2020
Period of Record Monthly Statistics for 404818073293101
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
Jan70.5071.3673.2277.0879.7180.7181.2619
Feb70.5971.3373.9977.4079.7980.9481.0718
Mar70.8571.7174.2476.3579.9380.9982.5128
Apr71.0371.8374.3077.3479.8381.0581.2219
May71.0672.0174.1476.3479.5880.9481.9621
Jun71.5471.9073.5376.4779.6180.6682.1420
Jul71.6171.7574.0576.3479.5080.5181.8120
Aug70.0071.4673.9876.2179.1480.5481.3020
Sep69.8971.4172.2775.3978.8380.1380.8422
Oct69.8871.2373.5276.3479.3680.3281.2419
Nov70.0971.5073.7376.9879.5481.2582.0320
Dec70.2271.5472.9376.5279.3680.5181.3721
.As of 1/16/2021 17:01-2
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Daily Groundwater Data

Most recent Provisional daily data value: 77.74 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
08/16/0207/13/19 5,52789
Lowest
Level
5th
%ile
10th
%ile
25th
%ile
50th
%ile
75th
%ile
90th
%ile
95th
%ile
Highest
Level
69.6971.0871.5173.7377.4079.6480.7381.1382.25

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
03/20/9112/23/20233
Lowest WLDate of Lowest WLHighest WLDate of Highest WL
69.9109/06/0282.5103/20/91

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
03/20/9112/23/206,704
Lowest WLDate of Lowest WLHighest WLDate of Highest WL
69.6910/08/0282.5103/20/91

Period of Record Options

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

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