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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  2019-05-19  
 Daily Data
    Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle)  2006-07-13  2019-05-18  13649 
    Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom)  2006-07-13  2019-05-18  13987 
    Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top)  1988-10-01  2019-05-18  32424 
    Temperature, water, degrees Celsius -- From multiparameter sonde  2013-11-23  2019-05-18  5226 
    Discharge, cubic feet per second  1930-03-01  2019-05-18  32584 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1992-09-30  2019-05-18  24326 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde  2013-11-23  2019-05-18  5217 
    Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde  2013-11-23  2019-05-18  5229 
    pH, water, unfiltered, field, standard units -- From multiparameter sonde  2013-11-23  2019-05-18  5172 
    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  2019-05-18  5244 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA  2011-12-03  2019-05-18  7098 
 Daily Statistics 
    Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle)  2006-07-13  2017-10-11 4036 
    Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom)  2006-07-13  2017-10-11 4082 
    Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top)  1988-10-01  2017-10-11 10223 
    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  2017-10  
    Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom)  2006-07  2017-10  
    Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top)  1988-10  2017-10  
    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  2018  
    Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom)  2006  2018  
    Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top)  1989  2018  
    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  2018-12-17  373 
 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