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USGS 01646500 POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA

  Stream Site

DESCRIPTION:
Latitude 38°56'59.2",   Longitude 77°07'39.5"   NAD83
Montgomery County, Maryland, Hydrologic Unit 02070008
Drainage area: 11,560 square miles
Datum of gage: 37.20 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    1972-06-09  2019-07-18  
 Daily Data
    Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle)  2006-07-13  2019-07-17  13763 
    Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom)  2006-07-13  2019-07-17  13900 
    Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top)  1988-10-01  2019-07-17  32595 
    Temperature, water, degrees Celsius -- From multiparameter sonde  2013-11-23  2019-07-07  5373 
    Discharge, cubic feet per second  1930-03-01  2019-07-17  32646 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1992-09-30  2019-07-17  24500 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde  2013-11-23  2019-07-07  5364 
    Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde  2013-11-23  2019-07-07  5376 
    pH, water, unfiltered, field, standard units -- From multiparameter sonde  2013-11-23  2019-07-07  5319 
    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  2019-07-07  5391 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA  2011-12-03  2019-07-07  7242 
 Daily Statistics 
    Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle)  2006-07-13  2019-05-09 4519 
    Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom)  2006-07-13  2019-05-09 4566 
    Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top)  1988-10-01  2019-05-09 10793 
    Temperature, water, degrees Celsius -- From multiparameter sonde  2013-11-23  2019-03-12 1675 
    Discharge, cubic feet per second  1930-03-01  2018-10-31 32387 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1992-09-30  2019-02-04 8006 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde  2013-11-23  2019-03-12 1673 
    Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde  2013-11-23  2019-03-12 1677 
    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  2019-03-12 1682 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA  2011-12-03  2018-07-08 2131 
 Monthly Statistics 
    Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle)  2006-07  2019-05  
    Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom)  2006-07  2019-05  
    Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top)  1988-10  2019-05  
    Temperature, water, degrees Celsius -- From multiparameter sonde  2013-11  2019-03  
    Discharge, cubic feet per second  1930-03  2018-10  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1992-09  2019-02  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde  2013-11  2019-03  
    Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde  2013-11  2019-03  
    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  2019-03  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA  2011-12  2018-07  
 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  
    Discharge, cubic feet per second  1930  2019  
    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  
    Dissolved oxygen, water, unfiltered, milligrams per liter -- 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  2014  2019  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA  2012  2018  
 Peak streamflow 1931-04-03  2017-05-07  87 
 Field measurements 1930-03-25  2019-07-02  375 
 Field/Lab water-quality samples 1965-08-09  2015-11-04  40 
 Water-Year Summary 2006  2018  13 
 Revisions  Loading...
OPERATION:
Record for this site is maintained by the USGS Maryland Water Science Center
Email questions about this site to Maryland Water Science Center Water-Data Inquiries