USGS -- Groundwater Watch

Site Number: 405432073345001 - N 7152. 1

DESCRIPTION:: Latitude 40°54'33.4", Longitude 73°34'44.9" NAD83
Nassau County, New York, Hydrologic Unit 02030201; Well depth: 370. feet
Land surface altitude: 14.5feet 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	2016-06-29	2020-11-03
Daily Data
Groundwater level above NGVD 1929, feet	2016-06-30	2020-11-02	1435
Daily Statistics
Groundwater level above NGVD 1929, feet	2016-06-30	2019-09-12	1129
Monthly Statistics
Groundwater level above NGVD 1929, feet	2016-06	2019-09
Annual Statistics
Groundwater level above NGVD 1929, feet	2016	2019
Field groundwater-level measurements	1961-09-07	2020-11-03	489
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: 8.21 on 11/3/2020
Period of Record Monthly Statistics for 405432073345001
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.
Month Lowest
Median 10th
%ile 25th
%ile 50th
%ile 75th
%ile 90th
%ile Highest
Median Number
of
Years
Jan 8.37 8.38 9.3 10.36 10.87 11.7 11.9 14
Feb 8.21 8.28 8.7 9.76 10.6 11.78 11.82 13
Mar 8.35 8.57 9.92 10.59 11.43 13.79 14.21 15
Apr 7.35 7.53 8.56 9.87 10.95 13.5 14.39 17
May 2.64 3.38 4.37 5.97 8.67 13.2 13.58 16
Jun -4.99 -2.2 -0.17 4.96 6.98 11.32 12.54 15
Jul -5.16 -4.54 -3.27 -0.53 2.75 7.1 8.14 18
Aug -2.98 -2.51 -1.61 1.2 7.34 11.3 11.77 14
Sep -1.92 -1.63 -0.01 3.5 8.25 11.59 12.23 15
Oct 3.7 3.7 6.89 8.22 10.15 11.58 13.96 17
Nov 6.83 7.72 8.52 10.21 11.2 13.67 14.56 15
Dec 9.05 9.05 9.5 10.8 11.35 12.68 13.87 17
.As of 6/27/2020 14:03-M
Statistics Options

View month/year statistics

Daily Groundwater Data

Most recent Provisional daily data value: 8.70 on 11/02/20
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
06/30/16	09/12/19	1,129	96

	Daily Data Options
	View latest data on NWISWeb
	View data in calendar format
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Periodic Groundwater Data

Groundwater hydrograph for well 405432073345001

Summary for Period of Record Periodic Water Levels

Elevation above NGVD 1929, feet

Approved Periodic Water Level Values

Begin Date

End Date

Number of Values

09/07/61

11/03/20

489

Lowest WL	Date of Lowest WL	Highest WL	Date of Highest WL
-8.27	07/30/20	15.74	02/05/62

	Groundwater Levels Options
	View latest data on NWISWeb
	Download groundwater levels in text format

Period of Record - All Data Types

Period of record plot for well 405432073345001

Summary for Period of Record - All Data Types

Elevation above NGVD 1929, feet

Begin Date

End Date

Number of Values

09/07/61

11/03/20

2,460

Lowest WL	Date of Lowest WL	Highest WL	Date of Highest WL
-8.27	07/30/20	15.74	02/05/62

	Period of Record Options
	View latest data on NWISWeb for all data types
	View month/year statistics
	Download groundwater levels in text format of all data types

^*References to non-Department of the Interior (DOI) products do not constitute an endorsement by the DOI.

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

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