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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-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 2015.
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 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01616500 plot. OPEQUON CREEK NEAR MARTINSBURG, WV
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/22/2017 is 170 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


                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
34.3
55.5
71.6
123
213
343
519
611
1,430
 
68
February
35.0
79.8
98.4
158
259
401
541
639
1,500
 
68
March
47.6
117
151
225
339
491
741
982
1,590
 
68
April
82.9
119
147
233
368
507
734
998
1,720
 
68
May
85.2
128
139
172
265
422
627
797
1,200
 
68
June
61.4
90.5
106
138
200
303
454
583
1,250
 
68
July
48.4
67.7
80.3
103
139
187
277
350
1,490
 
68
August
36.3
57.0
65.2
87.7
111
148
209
264
964
 
68
September
30.5
51.9
56.0
71.8
91.1
133
216
259
1,020
 
69
October
30.3
45.5
51.4
65.0
86.5
142
263
599
1,160
 
68
November
30.5
47.1
53.4
69.5
101
224
374
443
814
 
68
December
31.5
51.3
60.6
87.1
170
319
489
666
871
 
68
 
       

The current 28-day running-average value for 03/22/2017 is 170 cubic feet per second.

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

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