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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  2018-12-12  
 Daily Data
    Temperature, water, degrees Celsius -- 4.1 ft from riverbed (middle)  2006-07-13  2018-12-11  13379 
    Temperature, water, degrees Celsius -- 1.0 ft from riverbed (bottom)  2006-07-13  2018-12-11  13519 
    Temperature, water, degrees Celsius -- 7.1 ft from riverbed (top)  1988-10-01  2018-12-11  31953 
    Temperature, water, degrees Celsius -- From multiparameter sonde  2013-11-23  2018-12-11  4785 
    Discharge, cubic feet per second  1930-03-01  2018-12-11  32427 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1992-09-30  2018-12-11  23858 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde  2013-11-23  2018-10-02  4761 
    Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde  2013-11-23  2018-12-11  4791 
    pH, water, unfiltered, field, standard units -- From multiparameter sonde  2013-11-23  2018-12-11  4734 
    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  2018-12-11  4806 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA  2011-12-03  2018-12-11  6642 
 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  2017-10-04 1251 
    Discharge, cubic feet per second  1930-03-01  2018-04-13 32185 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1992-09-30  2017-10-11 7527 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde  2013-11-23  2017-10-04 1249 
    Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde  2013-11-23  2017-10-04 1252 
    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  2017-10-04 1258 
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA  2011-12-03  2017-10-02 1879 
 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  2017-10  
    Discharge, cubic feet per second  1930-03  2018-04  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1992-09  2017-10  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde  2013-11  2017-10  
    Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde  2013-11  2017-10  
    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  2017-10  
    Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen -- SUNA  2011-12  2017-10  
 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  2018  
    Discharge, cubic feet per second  1930  2018  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1992  2018  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius -- From multiparameter sonde  2014  2018  
    Dissolved oxygen, water, unfiltered, milligrams per liter -- From multiparameter sonde  2014  2018  
    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  2018  
    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  2018-11-01  372 
 Field/Lab water-quality samples 1965-08-09  2015-11-04  40 
 Water-Year Summary 2006  2017  12 
 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