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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
01652500 FOURMILE RUN AT ALEXANDRIA, VA
LOCATION.--Latitude 38°50'36.0", Longitude 77°05'09.1", North American Datum of 1983,
                    Arlington County, VA, Hydrologic Unit 02070010.
DRAINAGE AREA.--12.6 square miles.
PERIOD OF RECORD.--October 1951 to September 1969, October 1973 to September 1975, July 1979 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--No known regulation.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01652500 plot. FOURMILE RUN AT ALEXANDRIA, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 03/22/2017 is 20.1 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of 14-Day Average Streamflow
            Flow values in cubic feet per second


                01652500     FOURMILE RUN AT ALEXANDRIA, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
2.56
4.79
5.58
8.34
14.3
22.3
33.2
41.7
66.1
 
40
February
3.26
5.30
6.12
8.99
13.9
22.2
31.7
37.9
106
 
40
March
3.48
6.82
8.07
12.0
19.2
32.8
46.0
53.6
121
 
40
April
4.72
6.46
7.41
11.0
17.2
26.6
41.1
54.1
110
 
40
May
4.00
5.96
7.00
9.27
14.0
25.1
41.1
58.6
118
 
40
June
2.14
5.26
6.64
9.38
16.5
27.3
45.6
61.8
229
 
41
July
1.21
3.83
4.66
7.39
13.5
23.8
40.2
55.2
251
 
41
August
1.15
2.16
3.44
6.74
11.4
21.3
38.9
56.3
124
 
42
September
1.12
2.63
3.60
5.09
9.32
20.1
48.7
90.6
213
 
42
October
1.87
2.39
3.04
4.48
9.76
19.9
41.1
62.3
109
 
39
November
2.07
3.00
3.93
5.97
10.1
20.6
37.2
52.9
92.6
 
40
December
2.38
3.88
4.77
8.04
13.8
25.4
37.9
46.0
84.0
 
40
 
       

The current 14-day running-average value for 03/22/2017 is 20.1 cubic feet per second.

---- Provisional Data Subject to Revision ----

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