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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
01616500 OPEQUON CREEK NEAR MARTINSBURG, WV
LOCATION.--Latitude 39°25'25", Longitude 77°56'20", North American Datum of 1927
                    Berkeley County, W. Va., Hydrologic Unit 02070004.
DRAINAGE AREA.--273 square miles.
PERIOD OF RECORD.--May 1905 to July 1906, July 1947 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007.
REGULATION.--Some diurnal fluctuation at low flow caused by upstream mills in Virginia and since July 18, 1988, by wastewater treatment plant, downstream from Opequon Creek near Berryville, Va (01615000); drainage area 58.2 mi2.
GAGE OPERATION.--U.S. Geological Survey, West Virginia Water Science Center.
     Duration Plot with 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01616500 plot. OPEQUON CREEK NEAR MARTINSBURG, WV
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 12/03/2008 is 88.86 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


                01616500     OPEQUON CREEK NEAR MARTINSBURG, WV

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
31.2
53.1
64.1
115
212
332
534
670
2,450
 
60
February
30.6
65.6
90.6
159
261
410
592
759
2,470
 
60
March
44.4
119
143
202
343
538
861
1,120
1,830
 
60
April
76.2
110
145
208
316
506
758
999
2,360
 
60
May
79.9
111
123
148
219
372
529
729
1,850
 
60
June
50.1
81.5
92.7
120
175
245
418
571
2,260
 
60
July
43.0
61.8
73.8
91.5
124
168
270
372
2,510
 
60
August
31.9
51.1
58.1
78.2
102
148
221
278
1,270
 
60
September
28.6
46.3
51.4
63.9
82.9
125
236
326
1,620
 
61
October
29.9
41.1
47.7
60.2
78.7
138
306
596
1,740
 
60
November
29.9
46.0
51.6
63.5
94.4
221
380
535
852
 
60
December
29.9
47.3
57.1
81.6
168
328
567
776
1,350
 
60
 
       

The current 14-day running-average value for 12/03/2008 is 88.86 cubic feet per second.

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

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