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! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024
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Current Conditions for the Nation -- Water Quality -- 8 site(s) found

PROVISIONAL DATA SUBJECT TO REVISION




Customize table to display other current-condition parameters
Station
Number 		Station name Specif-
ic
conduc-
tance,
wat unf
uS/cm @
25 degC 		Temper-
ature,
water,
deg C 		Dis-
solved
oxygen,
mg/L 		pH,
water,
unfltrd
field,
std
units 		Date/Time
Group Frederick County, Maryland
01638500 POTOMAC RIVER AT POINT OF ROCKS, MD 239  15.4 9.5 7.9  04/19 22:45 EDT 
Group Montgomery County, Maryland
01646500 POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA 
      From multiparameter sonde 225  16.4 11.4 8.0  04/19 22:45 EDT 
Group Fairfax County, Virginia
01645704 DIFFICULT RUN ABOVE FOX LAKE NEAR FAIRFAX, VA 459  14.5 9.0 7.3  04/19 23:15 EDT 
01645762 S F LITTLE DIFFICULT RUN ABOVE MOUTH NR VIENNA, VA 205  14.2 9.2 7.3  04/19 23:00 EDT 
0164578734 SNAKEDEN BRANCH ABOVE LAKE AUDUBON AT RESTON, VA 252  14.0 8.6 7.2  04/19 23:20 EDT 
0164579522 THE GLADE NEAR HOWLAND DRIVE AT RESTON, VA 241  13.9 8.8 6.5  04/19 23:40 EDT 
01646000 DIFFICULT RUN NEAR GREAT FALLS, VA 287  14.8 9.6 7.4  04/19 23:15 EDT 
01646305 DEAD RUN AT WHANN AVENUE NEAR MCLEAN, VA 365  14.5 8.7 7.3  04/19 23:00 EDT 

Data status codes:
  --     Parameter not determined