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Data collected by the MD-DE-DC USGS Water Science Center are reported in Eastern Standard Time (EST) year-round.

Updated April 22, 2016: USGS streamflow monitoring will be discontinued at the following sites effective July 1, 2016:
  • 01487150 BUCKS BRANCH NEAR ATLANTA, DE (2014 to present)
  • 01594963 NYDEGGER RUN NEAR GORMAN, MD (2013 to present)
  • 01596050 SAVAGE RIVER NEAR AVILTON, MD (2013 to present)
  • 01597000 CRABTREE CREEK NEAR SWANTON, MD (1948 to present)
  • 01598650 SAND SPRING RUN AT FROSTBURG, MD (2006 to present)
  • 03076700 BUFFALO RUN NEAR FRIENDSVILLE, MD (2013 to present)
  • 03076800 MILL RUN AT MINERAL SPRING, MD (2013 to present)
Currently, data collection activities at these sites (map) are funded jointly by the USGS and partner agencies through the USGS Cooperative Water Program. Lack of partner funding for these sites will result in discontinuation of all monitoring activities. Questions or concerns can be directed to Jon Dillow (jjdillow@usgs.gov; 443-498-5524).



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

PROVISIONAL DATA SUBJECT TO REVISION

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DRAINAGE AREA.--11,560 mi2.
PERIOD OF RECORD.--March 1930 to current year.
GAGE.--Water-stage recorder, crest-stage gage, and concrete control. Datum of gage is 37.20 ft above 
   North American Vertical Datum of 1988. Prior to June 7, 1930, nonrecording gage, and June 7, 1930, to Jan. 22, 1965,
   water-stage recorder at site 1 mi upstream on right bank at same gage datum.
REMARKS.--Diversions since June 1959. U.S. Geological Survey satellite data-collection platform at station. 
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 484,000 ft3/s, Mar. 19, 1936,
   gage height, 28.1 ft, at site then in use; minimum daily discharge observed at gaging station, 121 ft3/s, Sept.
   9, 1966, does not include diversion of 489 ft3/s for municipal use; minimum daily discharge (adjusted),
   601 ft3/s, Sept. 10, 1966, includes diversion of 449 ft3/s for municipal use;
   minimum discharge, 66 ft3/s,  Sept. 9, 1966.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of June 2, 1889, was of approximately the same magnitude
   as that of March 19, 1936.
COOPERATION.--Funding for the operation of this station is provided by the Metropolitan Washington Council of
   Governments, and the U.S. Geological Survey. Access to gage site provided by the Baltimore District,
   U.S. Army Corps of Engineers. Water temperature and specific conductance monitoring are supported
   by the U.S. Army Corps of Engineers.

Revised Records: Prior revisions to drainage area are documented in Water Supply-Paper 726. Prior revisions to maximum discharge are documented in Water-Data Report WDR-MD-DE-75-1.

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This station managed by the MD-DE-DC Water Science Center, Baltimore office.

Available Parameters Available Period
All 12 Available Parameters for this site
  
00060 Discharge 2007-10-01  2016-05-29
00065 Gage height 2016-01-30  2016-05-29
00010 Temperature, water, 4.1 ft from riverbed (middle) 2007-10-01  2016-05-29
00010 Temperature, water, 1.0 ft from riverbed (bottom) 2007-10-01  2016-05-29
00010 Temperature, water, 7.1 ft from riverbed (top) 2007-10-01  2016-05-29
00095 Specific cond at 25C 2007-10-01  2016-05-29
99133 NO3+NO2,water,insitu 2011-12-03  2016-05-28
63680 Turbidity, Form Neph, From multiparameter sonde 2013-11-23  2016-05-28
00300 Dissolved oxygen, From multiparameter sonde 2013-11-23  2016-05-28
00400 pH, From multiparameter sonde 2013-11-23  2016-05-28
00010 Temperature, water, From multiparameter sonde 2013-11-23  2016-05-28
00095 Specific cond at 25C, From multiparameter sonde 2013-11-23  2016-05-28

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Summary of all available data for this site
Instantaneous-data availability statement


Discharge, cubic feet per second

Most recent instantaneous value: 14,500   05-29-2016  22:45 EST
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Daily discharge, cubic feet per second -- statistics for May 30 based on 86 years of record more
Most Recent
Instantaneous
Value May 30
Min
(1969)
25th
percen-
tile
Median Mean 75th
percen-
tile
Max
(1968)
-- unavailable -- 2570 5920 8870 11800 12800 75400


Gage height, feet

Most recent instantaneous value: 4.41   05-29-2016  22:45 EST
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