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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-Day Average Streamflow
 
01643590 LIMESTONE BRANCH NEAR LEESBURG, VA
LOCATION.--Latitude 39°10'03.4", Longitude 77°32'09.3", North American Datum of 1983,
                    Loudoun County, VA, Hydrologic Unit 02070008.
DRAINAGE AREA.--7.88 square miles.
PERIOD OF RECORD.--August 2001 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 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01643590 plot. LIMESTONE BRANCH NEAR LEESBURG, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 03/22/2017 is 4.91 cubic feet per second.

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


                01643590     LIMESTONE BRANCH NEAR LEESBURG, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
1.11
1.34
1.71
3.31
6.64
10.8
15.7
31.7
120
 
14
February
1.20
1.93
2.79
4.04
6.69
10.3
21.2
37.3
135
 
14
March
1.07
2.26
2.87
5.00
9.79
19.0
34.7
42.2
82.9
 
14
April
2.01
2.46
3.16
4.99
7.71
13.7
24.8
42.0
96.7
 
14
May
1.23
1.77
2.19
3.55
6.15
12.1
28.8
90.0
107
 
14
June
0.78
1.09
1.44
2.03
4.29
9.64
20.6
29.6
85.6
 
14
July
0.52
0.78
0.89
1.13
2.32
3.36
6.96
11.5
69.7
 
14
August
0.49
0.64
0.72
0.88
1.37
1.94
3.28
5.17
21.1
 
14
September
0.37
0.57
0.75
0.94
1.37
2.86
10.4
28.7
157
 
15
October
0.56
0.75
0.85
1.39
3.11
5.88
13.1
23.5
50.5
 
14
November
0.49
1.11
1.61
1.97
3.89
7.66
14.1
24.0
53.7
 
14
December
0.84
1.47
1.71
2.89
6.91
11.8
19.0
25.4
115
 
14
 
       

The current 7-day running-average value for 03/22/2017 is 4.91 cubic feet per second.

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

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