Skip to main content

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 Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Physical Daily Values, Unit Values 2022-06-22 2024-11-24
n/a USGS Annual Water Data Reports Site 2005-01-01 2024-01-01
Water Data for the Nation inventory

Monitoring location 0131079450 is associated with a Lake, Reservoir, Impoundment in Nassau County, New York. Current conditions of Lake or reservoir water surface elevation above NAVD 1988 are available. Water data back to 2005 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
0131079450 n/a
Site name
HEMPSTEAD LAKE AT HEMPSTEAD NY n/a
Site type
Lake, Reservoir, Impoundment
LK
DMS latitude 404022.1 n/a
DMS longitude 0733848.9 n/a
Decimal latitude 40.67280556 n/a
Decimal longitude -73.6469167 n/a
Latitude-longitude method
Interpolated from Digital MAP. N
Latitude-longitude accuracy
Accurate to + or - .1 sec (Differentially-Corrected GPS). 1
Latitude-longitude datum
North American Datum of 1983 NAD83
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 LYNBROOK, NY n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 0.00 feet n/a
Method altitude determined Level or other surveyed method. L
Altitude accuracy .10 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
Southern Long Island 02030202
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site YNYNNNNNNNNNNNNNYNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried n/a
Drainage area
17.1 square miles n/a
Contributing drainage area n/a
Time Zone abbreviation EST n/a
Site honors Daylight Saving Time
N n/a
Data reliability
n/a
Data-other GW files Y n/a
National aquifer n/a
Local aquifer n/a
Local aquifer type
n/a
Well depth n/a
Hole depth
n/a
Source of depth data n/a
Project number n/a

Operated in cooperation with:

logo for New York State Parks, Recreation and Historic Preservation
New York State Parks, Recreation and Historic Preservation