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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Visit the Louisiana page for an example. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. You can update the state name in the URL to visit your State Page or read our announcement on the Water Data for the Nation blog to find links to all the state and territory pages.
Important Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Physical Daily Values, Unit Values 2015-01-15 2024-12-09
n/a USGS Annual Water Data Reports Site 2015-01-01 2023-01-01
Water Data for the Nation inventory

Monitoring location 012112296 is associated with an Estuary in Fairfield County, Connecticut. Current conditions of Estuary or ocean water surface elevation above NAVD 1988 are available. Water data back to 2015 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
012112296 n/a
Site name
GREENWICH HARBOR AT GRASS ISLAND AT GREENWICH, CT n/a
Site type
Estuary
ES
DMS latitude 410050.84 n/a
DMS longitude 0733730.29 n/a
Decimal latitude 41.0141222 n/a
Decimal longitude -73.6250806 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
Connecticut 09
State
Connecticut 09
County
Fairfield County 001
Country US n/a
Land net location description n/a
Name of location map Glenville Quad n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 0 feet n/a
Method altitude determined Interpolated from topographic map. M
Altitude accuracy .1 feet n/a
Altitude datum
North American Vertical Datum of 1988 NAVD88
Subbasin hydrologic unit
Saugatuck 01100006
Drainage basin
n/a
Topographic setting
Stream channel
C
Flags for instruments at site YNNNYNNYNNNNNNNNYNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried 20141215 n/a
Drainage area
7.22 square miles n/a
Contributing drainage area n/a
Time Zone abbreviation EST n/a
Site honors Daylight Saving Time
Y n/a
Data reliability
Data have been checked by the reporting agency. C
Data-other GW files 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 001 n/a

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Town of Greenwich