Thames R at Groton, Ct. - 01127768
Scale
Continuous data
Thames R at Groton, Ct. - 01127768
Subscribe to WaterAlert March 28, 2025 - April 4, 2025
Temperature, water, degrees Celsius TOP
Important Data may be provisional
Value
Status
Time
Latest value
4.5 deg C
Provisional
Mar 13, 2025
11:15:00 AM EDT
Selected
No data
No data
Compare
Add last year's data to graph
Median
No median data for this data type
Statistics are not available at this monitoring location for the data type: Temperature, water, °C
Available data
Select data types to graph from categories based on the way the data were collected.
Learn about the data collection categories Continuous data
14 data types available - data from 2020-06-05 to 2025-03-13
Continuous data are collected via automated sensors installed at a monitoring location.
Data type
Data date range
Chlorophyll relative fluorescence (fChl), water, in situ, relative fluorescence units (RFU) TOP
2020-06-05 - 2025-03-13
Dissolved oxygen, water, unfiltered, milligrams per liter BOTTOM
2022-10-26 - 2025-03-13
Dissolved oxygen, water, unfiltered, milligrams per liter TOP
2020-06-05 - 2025-03-13
Dissolved oxygen, water, unfiltered, percent of saturation BOTTOM
2022-10-26 - 2025-03-13
Dissolved oxygen, water, unfiltered, percent of saturation TOP
2020-06-05 - 2025-03-13
pH, water, unfiltered, field, standard units BOTTOM
2022-10-26 - 2025-03-13
pH, water, unfiltered, field, standard units TOP
2020-06-05 - 2025-03-13
Salinity, water, unfiltered, practical salinity units at 25 degrees Celsius BOTTOM
2022-10-26 - 2025-03-13
Salinity, water, unfiltered, practical salinity units at 25 degrees Celsius TOP
2020-06-05 - 2025-03-13
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius BOTTOM
2022-10-26 - 2025-03-13
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius TOP
2020-06-05 - 2025-03-13
Temperature, water, degrees Celsius BOTTOM
2022-10-26 - 2025-03-13
Temperature, water, degrees Celsius TOP
2020-06-05 - 2025-03-13
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) TOP
2020-06-05 - 2025-03-13
Daily data
0 data types available
Field measurements
0 data types available
Discrete sample data
74 Observed properties (data types) available - with data from 1963-09-24 to 2025-03-10
290 Sampling activities
- Monitoring Location
- Active Monitoring Locations
5 km
3 mi
Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed February, 2025.
Interested in understanding how to access the upstream/downstream data? Learn about the Network-Linked Data Index (NLDI)
| USGS Parameter Group | Data Types | Start Date | End Date |
|---|---|---|---|
| Biological | Water-quality | 2020-06-17 | 2023-09-28 |
| Information | Water-quality | 2020-06-17 | 2024-02-22 |
| Inorganics, Major, Metals | Water-quality | 1963-09-24 | 1963-09-24 |
| Inorganics, Major, Non-metals | Unit Values, Water-quality | 1963-09-24 | 2025-03-13 |
| Inorganics, Minor, metals | Water-quality | 1963-09-24 | 1963-09-24 |
| Nutrient | Water-quality | 2020-06-17 | 2024-01-19 |
| Organics, other | Water-quality | 2020-06-17 | 2023-11-08 |
| Physical | Unit Values, Water-quality | 1963-09-24 | 2025-03-13 |
Monitoring location 01127768 is associated with an Estuary in New London County, Connecticut. Water data back to 1963 are available online.
| Metadata Element | Location Metadata | Metadata Code |
|---|---|---|
|
Agency
|
U.S. Geological Survey | USGS |
|
Site identification number
|
01127768 | n/a |
|
Site name
|
THAMES R AT GROTON, CT. | n/a |
|
Site type
|
Estuary
|
ES |
| DMS latitude | 412040 | n/a |
| DMS longitude | 0720519 | n/a |
| Decimal latitude | 41.34444444 | n/a |
| Decimal longitude | -72.0886111 | n/a |
|
Latitude-longitude method
|
Interpolated from MAP. | M |
|
Latitude-longitude accuracy
|
Unknown or unspecified. | U |
|
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
|
New London County | 011 |
| Country | US | n/a |
| Land net location description | n/a | |
| Name of location map | NEW LONDON, CT | n/a |
| Scale of location map | 24000 | n/a |
| Altitude of Gage/land surface | 0 feet | n/a |
| Method altitude determined | Interpolated from Digital Elevation Model | N |
| Altitude accuracy | 4.3 feet | n/a |
|
Altitude datum
|
North American Vertical Datum of 1988 | NAVD88 |
|
Subbasin hydrologic unit
|
Long Island Sound | 02030203 |
|
Drainage basin
|
n/a | |
|
Topographic setting
|
Stream channel
|
C |
| Flags for instruments at site | YNNNNNNNNNNNNNNNNNNNNNNNNNNNNN | n/a |
|
Date of first construction
|
n/a | |
| Date site established or inventoried | n/a | |
|
Drainage area
|
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 | n/a |