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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.



! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024
with a full decommission expected 6 months later. Learn more about the upcoming change and where to find the new samples data in our blog.

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USGS 01463500 Delaware River at Trenton NJ
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    1981-10-01  2025-01-15  
 Daily Data
    Temperature, water, degrees Celsius  1953-10-01  1995-09-29  32916 
    Temperature, water, degrees Celsius  1995-09-30  2025-01-14  30771 
    Discharge, cubic feet per second  1912-10-01  2025-01-14  41014 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1968-06-25  1995-09-29  23288 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1995-09-30  2025-01-14  30525 
    Dissolved oxygen, water, unfiltered, milligrams per liter  1962-01-02  1995-09-10  25156 
    Dissolved oxygen, water, unfiltered, milligrams per liter  1995-09-30  2025-01-14  28722 
    Dissolved oxygen, water, unfiltered, percent of saturation  2001-10-01  2025-01-14  22527 
    pH, water, unfiltered, field, standard units  1968-06-25  1995-09-29  14464 
    pH, water, unfiltered, field, standard units  1995-09-30  2025-01-14  28560 
    Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, micrograms per liter  2017-02-17  2025-01-14  5943 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2004-06-01  2025-01-14  19789 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2018-01-12  2023-04-04  2088 
 Daily Statistics 
    Temperature, water, degrees Celsius  1965-10-01  1995-09-29 8712 
    Temperature, water, degrees Celsius  1995-09-30  2024-10-22 10173 
    Discharge, cubic feet per second  1912-10-01  2024-08-05 40852 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1968-06-26  1995-09-29 7600 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1995-09-30  2022-01-11 9089 
    Dissolved oxygen, water, unfiltered, milligrams per liter  1965-10-01  1995-09-10 7555 
    Dissolved oxygen, water, unfiltered, milligrams per liter  1995-09-30  2024-10-22 9490 
    Dissolved oxygen, water, unfiltered, percent of saturation  2001-10-01  2022-01-11 6611 
    Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, micrograms per liter  2017-02-17  2019-09-30 889 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2004-06-01  2024-10-16 5770 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2018-01-12  2019-12-31 668 
 Monthly Statistics 
    Temperature, water, degrees Celsius  1965-10  1995-09  
    Temperature, water, degrees Celsius  1995-09  2024-10  
    Discharge, cubic feet per second  1912-10  2024-08  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1968-06  1995-09  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1995-09  2022-01  
    Dissolved oxygen, water, unfiltered, milligrams per liter  1965-10  1995-09  
    Dissolved oxygen, water, unfiltered, milligrams per liter  1995-09  2024-10  
    Dissolved oxygen, water, unfiltered, percent of saturation  2001-10  2022-01  
    Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, micrograms per liter  2017-02  2019-09  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2004-06  2024-10  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2018-01  2019-12  
 Annual Statistics 
    Temperature, water, degrees Celsius  1966  1995  
    Temperature, water, degrees Celsius  1995  2025  
    Discharge, cubic feet per second  1913  2024  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1968  1995  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1995  2022  
    Dissolved oxygen, water, unfiltered, milligrams per liter  1966  1995  
    Dissolved oxygen, water, unfiltered, milligrams per liter  1995  2025  
    Dissolved oxygen, water, unfiltered, percent of saturation  2002  2022  
    Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, micrograms per liter  2017  2019  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2004  2025  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2018  2020  
 Peak streamflow 1897-12-16  2023-05-02  126 
 Field measurements 1936-03-19  2024-12-30  295 
 Field/Lab water-quality samples 1944-10-01  2024-02-27  1818 
 Water-Year Summary 2006  2024  19 
 Revisions  Loading...