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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. To learn more, read our announcement on the Water Data for the Nation blog.
Important Inventory Page

USGS Parameter Group Data Types Start Date End Date
Physical Groundwater Levels 1941-09-25 1998-12-15
Water Data for the Nation inventory

Monitoring location 405318073375501 is associated with a Well in Nassau County, New York. Water data back to 1941 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
405318073375501 n/a
Site name
N 1149. 1 n/a
Site type
Well
GW
DMS latitude 405318 n/a
DMS longitude 0733755 n/a
Decimal latitude 40.88843244 n/a
Decimal longitude -73.63151629 n/a
Latitude-longitude method
Interpolated from MAP. M
Latitude-longitude accuracy
Accurate to + or - 1 sec. S
Latitude-longitude datum
North American Datum of 1927 NAD27
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
New York 36
State
New York 36
County
Nassau County 059
Country US n/a
Land net location description n/a
Name of location map MAMARONECK, NY n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 89.0 feet n/a
Method altitude determined Level or other surveyed method. L
Altitude accuracy 0.1 feet n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
Northern Long Island 02030201
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
19410925 n/a
Date site established or inventoried n/a
Drainage area
n/a
Contributing drainage area n/a
Time Zone abbreviation EST n/a
Site honors Daylight Saving Time
N n/a
Data reliability
Unchecked data. U
Data-other GW files YYNNNYNN n/a
National aquifer n/a
Local aquifer Port Washington Confining Unit 112PGFG
Local aquifer type
n/a
Well depth 82. feet n/a
Hole depth
82. feet n/a
Source of depth data n/a
Project number n/a