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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-Day Average Streamflow
 
01615000 OPEQUON CREEK NEAR BERRYVILLE, VA
LOCATION.--Latitude 39°10'29", Longitude 78°04'42", North American Datum of 1983,
                    Frederick County, VA, Hydrologic Unit 02070004.
DRAINAGE AREA.--58.2 square miles.
PERIOD OF RECORD.--October 1943 to September 1997, October 2002 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007 except July 1988 through September 1997.
REGULATION.--Wastewater treament plant inflows from July 1988 through September 1997.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01615000 plot. OPEQUON CREEK NEAR BERRYVILLE, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 08/28/2008 is 10.21 cubic feet per second.

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


                01615000     OPEQUON CREEK NEAR BERRYVILLE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
2.88
7.61
12.2
23.0
45.0
74.5
119
140
310
 
59
February
5.24
12.5
17.4
29.7
55.0
86.2
116
140
294
 
59
March
11.4
22.8
27.3
43.4
69.4
112
171
217
336
 
59
April
8.96
17.6
22.2
32.2
64.7
103
155
193
333
 
59
May
9.89
13.4
16.4
22.6
39.0
70.8
106
137
296
 
59
June
5.45
8.32
10.4
16.6
29.1
52.9
93.2
116
369
 
59
July
1.79
4.91
6.14
10.1
16.5
29.5
61.8
80.6
420
 
59
August
0.90
3.99
5.06
7.75
13.2
25.9
47.7
94.6
144
 
59
September
0.51
3.03
3.85
6.50
12.7
23.4
48.4
77.0
253
 
59
October
1.36
3.07
3.64
6.80
11.2
30.4
93.5
161
253
 
57
November
2.25
4.75
6.51
9.49
16.9
41.7
79.5
113
178
 
59
December
2.64
5.45
6.32
14.1
30.8
74.2
133
156
210
 
59
 
       

The current 28-day running-average value for 08/28/2008 is 10.21 cubic feet per second.

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

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