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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 Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Biological Water-quality 2000-05-10 2003-08-13
Information Water-quality 1978-07-18 2024-02-21
Inorganics, Major, Metals Water-quality 1976-11-08 2023-06-21
Inorganics, Major, Non-metals Water-quality 1976-06-07 2024-02-21
Inorganics, Minor, Non-metals Water-quality 1976-06-07 2023-06-21
Inorganics, Minor, metals Water-quality 1976-06-07 2019-08-20
Microbiological Water-quality 1976-11-08 2024-01-11
Nutrient Water-quality 1976-06-07 2023-08-01
Organics, PCBs Water-quality 1976-06-07 2010-08-18
Organics, PFAS Water-quality 2020-03-02 2022-03-16
Organics, other Water-quality 1976-06-07 2023-08-01
Organics, pesticide Water-quality 1976-06-07 2022-03-16
Physical Daily Values, Unit Values, Water-quality 1976-06-07 2024-11-24
Radiochemistry Water-quality 1981-02-23 2008-04-29
Sediment Water-quality 1978-09-28 2010-08-18
Stable Isotopes Water-quality 2002-08-12 2002-08-12
n/a Peak Measurements 1998-04-10 2016-07-31
n/a Site Visits 1975-08-20 2024-06-27
n/a USGS Annual Water Data Reports Site 2006-01-01 2022-01-01
Water Data for the Nation inventory

Monitoring location 01398102 is associated with a Stream in Somerset County, New Jersey. Current conditions of Gage height are available. Water data back to 1975 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
01398102 n/a
Site name
South Branch Raritan River at South Branch NJ n/a
Site type
Stream
ST
DMS latitude 403249 n/a
DMS longitude 0744147 n/a
Decimal latitude 40.54694444 n/a
Decimal longitude -74.69638889 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 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
New Jersey 34
State
New Jersey 34
County
Somerset County 035
Country US n/a
Land net location description Branchburg Township n/a
Name of location map Raritan n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 45.54 feet n/a
Method altitude determined Level or other surveyed method. L
Altitude accuracy .02 feet n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
Raritan 02030105
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site NNNNYNYNNYNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried 19990413 n/a
Drainage area
265 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
n/a
Data-other GW files NNNNNNNN 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 00300 n/a

Operated in cooperation with:

logo for County of Somerset, New Jersey
County of Somerset, New Jersey
logo for USGS - Cooperative Matching Funds
USGS - Cooperative Matching Funds