USGS -- Groundwater Watch

Site Number: 404614073330504 - N 1195. 5

DESCRIPTION:: Latitude 40°46'14", Longitude 73°33'05" NAD27
Nassau County, New York, Hydrologic Unit 02030202; Well depth: 116. feet
Hole depth: 116. feet
Land surface altitude: 148.0feet 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
Field groundwater-level measurements	1976-09-07	2020-10-19	231
Field/Lab water-quality samples
Additional Data Sources	Begin Date	End Date	Count
Annual Water-Data Report (pdf) offsite	2005	2011	5

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

Monthly statistics plot for 404614073330504

Most recent data value: 79.63 on 10/19/2020
Period of Record Monthly Statistics for 404614073330504
Elevation 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 72.12 72.69 74.77 78.37 80.76 81.48 81.52 14
Feb 74.69 74.84 76.86 78.20 80.82 81.32 81.35 10
Mar 72.40 73.94 76.38 78.78 82.09 86.74 88.16 25
Apr 73.95 74.50 77.75 78.91 81.03 86.04 88.93 18
May 73.83 74.65 77.94 79.05 82.43 88.85 89.14 17
Jun 73.47 74.76 76.88 79.32 82.64 86.15 87.50 22
Jul 73.50 74.52 76.10 78.46 80.81 83.65 86.23 17
Aug 74.28 74.77 76.27 80.00 81.19 83.20 86.13 17
Sep 72.50 73.60 75.43 80.47 85.26 87.25 87.77 20
Oct 73.97 74.61 75.10 77.94 80.53 83.96 85.91 15
Nov 74.95 75.02 76.48 79.29 81.16 84.15 85.56 13
Dec 72.51 74.67 77.43 80.25 84.66 86.36 87.08 18
.As of 1/16/2021 16:59-2
Statistics Options

View month/year statistics

Periodic Groundwater Data

Groundwater hydrograph for well 404614073330504

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

09/07/76

10/19/20

231

Lowest WL	Date of Lowest WL	Highest WL	Date of Highest WL
72.12	01/22/96	89.14	05/24/79

	Groundwater Levels Options
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Last update: Thursday, September 26, 2019 at 13:24

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