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| Data Type | Begin Date | End Date | Count |
|---|---|---|---|
| Current / Historical Observations (availability statement) | 1972-06-09 | 2025-11-30 | |
| Daily Data | |||
| Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle) | 2006-07-13 | 2019-09-30 | 13991 |
| Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom) | 2006-07-13 | 2019-09-30 | 14125 |
| Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top) | 1988-10-01 | 2019-09-30 | 32820 |
| Temperature, water, degrees Celsius -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 5256 |
| Temperature, water, degrees Celsius -- From multiparameter sonde | 2019-07-25 | 2025-11-29 | 6732 |
| Discharge, cubic feet per second | 1930-03-01 | 2025-11-29 | 34973 |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius | 1992-09-30 | 2019-09-30 | 24722 |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 5250 |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde | 2019-07-25 | 2025-11-29 | 6576 |
| Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 5262 |
| Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde | 2019-07-25 | 2025-11-29 | 6612 |
| pH, water, unfiltered, field, standard units -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 5205 |
| pH, water, unfiltered, field, standard units -- From multiparameter sonde | 2019-07-25 | 2025-11-29 | 6558 |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 5277 |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- From multiparameter sonde | 2019-07-25 | 2025-11-29 | 6606 |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA | 2011-12-03 | 2019-06-10 | 7173 |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA | 2019-07-25 | 2025-11-29 | 6582 |
| Daily Statistics | |||
| Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle) | 2006-07-13 | 2019-09-30 | 4663 |
| Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom) | 2006-07-13 | 2019-09-30 | 4708 |
| Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top) | 1988-10-01 | 2019-09-30 | 10935 |
| Temperature, water, degrees Celsius -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 1752 |
| Temperature, water, degrees Celsius -- From multiparameter sonde | 2019-07-25 | 2025-06-25 | 2097 |
| Discharge, cubic feet per second | 1930-03-01 | 2025-02-26 | 34697 |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius | 1992-09-30 | 2019-09-30 | 8239 |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 1750 |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde | 2019-07-25 | 2025-06-25 | 2045 |
| Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 1754 |
| Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde | 2019-07-25 | 2025-06-25 | 2058 |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- From multiparameter sonde | 2013-11-23 | 2019-05-26 | 1759 |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- From multiparameter sonde | 2019-07-25 | 2024-09-29 | 1788 |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA | 2011-12-03 | 2019-06-10 | 2391 |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA | 2019-07-25 | 2024-10-16 | 1797 |
| Monthly Statistics | |||
| Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle) | 2006-07 | 2019-09 | |
| Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom) | 2006-07 | 2019-09 | |
| Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top) | 1988-10 | 2019-09 | |
| Temperature, water, degrees Celsius -- From multiparameter sonde | 2013-11 | 2019-05 | |
| Temperature, water, degrees Celsius -- From multiparameter sonde | 2019-07 | 2025-06 | |
| Discharge, cubic feet per second | 1930-03 | 2025-02 | |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius | 1992-09 | 2019-09 | |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde | 2013-11 | 2019-05 | |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde | 2019-07 | 2025-06 | |
| Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde | 2013-11 | 2019-05 | |
| Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde | 2019-07 | 2025-06 | |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- From multiparameter sonde | 2013-11 | 2019-05 | |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- From multiparameter sonde | 2019-07 | 2024-09 | |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA | 2011-12 | 2019-06 | |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA | 2019-07 | 2024-10 | |
| Annual Statistics | |||
| Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle) | 2006 | 2019 | |
| Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom) | 2006 | 2019 | |
| Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top) | 1989 | 2019 | |
| Temperature, water, degrees Celsius -- From multiparameter sonde | 2014 | 2019 | |
| Temperature, water, degrees Celsius -- From multiparameter sonde | 2019 | 2025 | |
| Discharge, cubic feet per second | 1930 | 2025 | |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius | 1992 | 2019 | |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde | 2014 | 2019 | |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde | 2019 | 2025 | |
| Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde | 2014 | 2019 | |
| Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde | 2019 | 2025 | |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- From multiparameter sonde | 2014 | 2019 | |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU) -- From multiparameter sonde | 2019 | 2024 | |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA | 2012 | 2019 | |
| Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA | 2019 | 2025 | |
| Peak streamflow | 1931-04-03 | 2024-04-04 | 94 |
| Field measurements | 1930-03-25 | 2025-11-26 | 412 |
| Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) | 1965-08-09 | 2022-10-19 | 58 |
| Water-Year Summary | 2006 | 2024 | 19 |
| Revisions | Loading... | ||
U.S. Department of the Interior |
U.S. Geological Survey
Title: NWIS Site Information for USA: Site Inventory
URL:
Page Contact Information: Maryland Water Data Support Team
Page Last Modified: 2025-11-30 18:56:51 EST
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