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USGS 01194750 CONNECTICUT RIVER AT ESSEX, CT

PROVISIONAL DATA SUBJECT TO REVISION

Click to hidestation-specific text
Station operated in cooperation with University of Connecticut Marine Sciences Department and the Connecticut Department of Energy & Environmental Protection Long Island Sound License Plate Fund.


 
Boating safety tips
Available Parameters Available Period
  
2010-02-20  2019-06-05
2010-02-20  2026-10-14
2010-02-20  2026-10-14
2010-02-20  2026-10-14
2010-02-19  2019-06-05
2010-02-20  2026-10-14
2010-02-20  2026-10-14
2019-07-09  2026-10-14
2019-07-09  2026-10-14
2010-02-27  2011-10-01
2019-07-09  2026-10-14
2019-07-09  2026-10-14
2019-07-09  2026-10-14
2019-07-09  2026-10-14
2010-02-24  2017-11-01
2010-02-20  2016-12-09
2010-02-20  2026-10-14
2010-02-20  2026-10-14







 (7)
 
  -- or --

 

 
Summary of all available data for this site
Instantaneous-data availability statement

Temperature, water, degrees Celsius, at Essex Island Bottom
Most recent instantaneous value: 16.9 10-14-2026   03:30 EDT
Graph of Temperature, water, degrees Celsius

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Temperature, water, degrees Celsius, at Essex Island Top
Most recent instantaneous value: 16.7 10-14-2026   03:30 EDT
Graph of Temperature, water, degrees Celsius

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Temperature, water, degrees Celsius, main dock
 
-- Data temporarily unavailable for the time period specified --

Gage height, feet
Most recent instantaneous value: 2.39 10-14-2026   04:20 EDT
Graph of Gage height, feet

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, at Essex Island Bottom
Most recent instantaneous value: 17800 10-14-2026   03:30 EDT
Graph of Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, at Essex Island Top
Most recent instantaneous value: 8060 10-14-2026   03:30 EDT
Graph of Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, main dock
 
-- Data temporarily unavailable for the time period specified --

Dissolved oxygen, water, unfiltered, milligrams per liter
 
-- Data temporarily unavailable for the time period specified --

Dissolved oxygen, water, unfiltered, milligrams per liter, at Essex Island Bottom
Most recent instantaneous value: 7.4 10-14-2026   03:30 EDT
Graph of Dissolved oxygen, water, unfiltered, milligrams per liter

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Dissolved oxygen, water, unfiltered, milligrams per liter, at Essex Island Top
Most recent instantaneous value: 7.8 10-14-2026   03:30 EDT
Graph of Dissolved oxygen, water, unfiltered, milligrams per liter

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pH, water, unfiltered, field, standard units, at Essex Island Top
Most recent instantaneous value: 7.4 10-14-2026   03:30 EDT
Graph of pH, water, unfiltered, field, standard units

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Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE), at Essex Island Top
Most recent instantaneous value: 38.0 10-14-2026   03:30 EDT
Graph of Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)

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Chlorophyll relative fluorescence (fChl), water, in situ, relative fluorescence units (RFU), at Essex Island Top
Most recent instantaneous value: 0.85 10-14-2026   03:30 EDT
Graph of Chlorophyll relative fluorescence (fChl), water, in situ, relative fluorescence units (RFU)

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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)
 
-- Data temporarily unavailable for the time period specified --

Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), at Essex Island Top
Most recent instantaneous value: 3.3 10-14-2026   03:30 EDT
Graph of Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

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Salinity, water, unfiltered, practical salinity units at 25 degrees Celsius
 
-- Data temporarily unavailable for the time period specified --

Salinity, water, unfiltered, practical salinity units at 25 degrees Celsius, at Essex Island Bottom
Most recent instantaneous value: 10 10-14-2026   03:30 EDT
Graph of Salinity, water, unfiltered, practical salinity units at 25 degrees Celsius

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Salinity, water, unfiltered, practical salinity units at 25 degrees Celsius, at Essex Island Top
Most recent instantaneous value: 4.5 10-14-2026   03:30 EDT
Graph of Salinity, water, unfiltered, practical salinity units at 25 degrees Celsius

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