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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
   Statistics Options

 View month/year statistics		    View month/year statistics
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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 View daily medians		 View daily medians
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

 View latest data on NWISWeb for all data types

 View month/year statistics

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