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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-Day Average Streamflow
 
01659000 NORTH BRANCH CHOPAWAMSIC CREEK NEAR INDEPENDENT HILL, VA
LOCATION.--Latitude 38°33'54", Longitude 77°25'34", North American Datum of 1927,
                    Prince William County, VA, Hydrologic Unit 02070011.
DRAINAGE AREA.--5.69 square miles.
PERIOD OF RECORD.--May 1951 to June 1957, March 2000 to December 2003, January 2007 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 01659000 plot. NORTH BRANCH CHOPAWAMSIC CREEK NEAR INDEPENDENT HILL, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 08/22/2016 is not determined.

  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


                01659000     NORTH BRANCH CHOPAWAMSIC CREEK NEAR INDEPENDENT HILL, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
0.83
1.01
1.33
1.74
2.84
7.06
11.4
13.9
28.9
 
13
February
0.83
1.41
1.87
2.61
4.50
7.19
11.1
15.9
51.3
 
14
March
0.93
2.44
3.07
4.34
7.61
13.4
21.9
26.7
38.9
 
14
April
1.52
2.57
3.04
4.01
5.97
9.30
16.5
22.0
59.9
 
15
May
0.52
0.79
1.20
1.88
3.16
6.52
16.0
22.8
82.6
 
15
June
0.13
0.32
0.40
0.83
1.88
5.21
12.8
17.8
22.4
 
16
July
0.04
0.15
0.20
0.34
0.92
2.04
3.82
9.18
21.4
 
15
August
0.00
0.02
0.11
0.23
0.50
1.33
2.69
4.54
62.7
 
15
September
0.00
0.04
0.06
0.17
0.56
1.22
5.94
11.4
33.2
 
15
October
0.00
0.04
0.17
0.38
0.90
1.70
3.82
6.32
10.6
 
14
November
0.23
0.38
0.46
0.77
2.10
4.79
10.9
15.7
43.5
 
14
December
0.36
0.68
1.00
1.73
2.61
6.62
12.4
25.6
50.6
 
14
 
       

The current 7-day running-average value for 08/22/2016 is not determined.

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

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