USGS 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT

PROVISIONAL DATA SUBJECT TO REVISION

Click to hidestation-specific text
Station operated in cooperation with the Connecticut Department of Energy & Environmental Protection.
Boating safety tips
This station managed by the East Hartford CT Field Office.

Available Parameters Available Period
  
2019-08-02  2026-10-07
1990-10-01  2026-10-07
2007-10-01  2026-10-07
2019-08-02  2026-10-07
2019-08-02  2026-10-07
2019-08-02  2026-10-07
2019-08-02  2026-10-07
2023-10-08  2026-10-07
2019-08-02  2026-10-07
2020-01-31  2026-10-07







 (7)
 

  -- or --

 


 

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


Temperature, water, degrees Celsius

Most recent instantaneous value: 17.0 10-07-2026   15:00 EDT
Graph of  Temperature, water, degrees Celsius

Add up to 2 more sites and replot for "Temperature, water, degrees Celsius"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages




Discharge, cubic feet per second

Most recent instantaneous value: 3600 10-07-2026   14:30 EDT
Graph of  Discharge, cubic feet per second

Add up to 2 more sites and replot for "Discharge, cubic feet per second"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages


Daily discharge, cubic feet per second -- statistics for Oct 7 based on 98 water years of record more
Min
(1931)
Most Recent
Instantaneous
Value Oct 7
25th
percen-
tile
Median Mean 75th
percen-
tile
Max
(1988)
2030 3600 4330 6530 8900 10700 46700


Gage height, feet

Most recent instantaneous value: 7.69 10-07-2026   14:30 EDT
Graph of  Gage height, feet

Add up to 2 more sites and replot for "Gage height, feet"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages




Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

Most recent instantaneous value: 187 10-07-2026   15:00 EDT
Graph of  Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

Add up to 2 more sites and replot for "Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages




Dissolved oxygen, water, unfiltered, milligrams per liter

Most recent instantaneous value: 10.8 10-07-2026   15:00 EDT
Graph of  Dissolved oxygen, water, unfiltered, milligrams per liter

Add up to 2 more sites and replot for "Dissolved oxygen, water, unfiltered, milligrams per liter"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages




Dissolved oxygen, water, unfiltered, percent of saturation

Most recent instantaneous value: 112 10-07-2026   15:00 EDT
Graph of  Dissolved oxygen, water, unfiltered, percent of saturation

Add up to 2 more sites and replot for "Dissolved oxygen, water, unfiltered, percent of saturation"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages




pH, water, unfiltered, field, standard units

Most recent instantaneous value: 8.2 10-07-2026   15:00 EDT
Graph of  pH, water, unfiltered, field, standard units

Add up to 2 more sites and replot for "pH, water, unfiltered, field, standard units"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages




Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)

Most recent instantaneous value: 31.88 10-07-2026   15:00 EDT
Graph of  Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)

Add up to 2 more sites and replot for "Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages




Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

Most recent instantaneous value: 1.2 10-07-2026   15:00 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)

Add up to 2 more sites and replot for "Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)"

?
 


Create presentation-quality / stand-alone graph.   Subscribe to WaterAlert      

See this graph on the Monitoring Location Pages



Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen, Nitrate Sensor
 
-- Data temporarily unavailable for the time period specified --