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USGS 01491000 CHOPTANK RIVER NEAR GREENSBORO, MD

  Stream Site

DESCRIPTION:
Latitude 38°59'49.9",   Longitude 75°47'08.9"   NAD83
Caroline County, Maryland, Hydrologic Unit 02060005
Drainage area: 113 square miles
Datum of gage: 2.73 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    1990-10-01  2025-10-20  
 Daily Data
    Temperature, water, degrees Celsius  1988-10-01  2012-05-09  1952 
    Temperature, water, degrees Celsius  2023-04-21  2025-10-19  2730 
    Discharge, cubic feet per second  1948-01-01  2025-10-19  28417 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2010-10-01  2012-05-09  1581 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2023-04-21  2025-10-19  2673 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2023-04-21  2025-10-19  2730 
    pH, water, unfiltered, field, standard units  2023-04-21  2025-10-19  2730 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2023-04-21  2025-10-19  2664 
    Suspended sediment concentration, milligrams per liter  1980-10-01  1991-09-29  4016 
    Suspended sediment discharge, short tons per day  1980-10-01  1991-09-29  4016 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen  2023-08-02  2025-10-19  2406 
 Daily Statistics 
    Temperature, water, degrees Celsius  2010-10-01  2012-05-09 529 
    Temperature, water, degrees Celsius  2023-04-21  2025-05-15 754 
    Discharge, cubic feet per second  1948-01-01  2025-08-05 28342 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2010-10-01  2012-05-09 527 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2023-04-21  2025-05-15 740 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2023-04-21  2025-05-15 754 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2023-04-21  2025-05-15 732 
    Suspended sediment concentration, milligrams per liter  1980-10-01  1991-09-29 4016 
    Suspended sediment discharge, short tons per day  1980-10-01  1991-09-29 4016 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2010-10  2012-05  
    Temperature, water, degrees Celsius  2023-04  2025-05  
    Discharge, cubic feet per second  1948-01  2025-08  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2010-10  2012-05  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2023-04  2025-05  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2023-04  2025-05  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2023-04  2025-05  
    Suspended sediment concentration, milligrams per liter  1980-10  1991-09  
    Suspended sediment discharge, short tons per day  1980-10  1991-09  
 Annual Statistics 
    Temperature, water, degrees Celsius  2011  2012  
    Temperature, water, degrees Celsius  2023  2025  
    Discharge, cubic feet per second  1948  2025  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2011  2012  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2023  2025  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2023  2025  
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2023  2025  
    Suspended sediment concentration, milligrams per liter  1981  1991  
    Suspended sediment discharge, short tons per day  1981  1991  
 Peak streamflow 1948-01-14  2023-12-19  77 
 Field measurements 1948-01-15  2025-08-06  962 
 Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) 1964-06-11  2024-02-14  1512 
 Water-Year Summary 2006  2024  19 
 Revisions  Loading...
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