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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 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 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 11/17/2008 is 95.14 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
55.1
65.8
119
212
343
532
629
1,430
 
60
February
35.0
76.6
93.6
154
266
397
551
654
1,500
 
60
March
47.6
121
154
222
335
495
753
961
1,590
 
60
April
82.9
117
142
233
384
513
746
1,000
1,720
 
60
May
85.2
127
137
168
251
408
571
686
1,200
 
60
June
61.4
87.8
101
132
189
298
441
524
1,250
 
60
July
48.4
66.1
78.1
101
136
183
281
371
1,490
 
60
August
36.3
56.3
63.1
84.9
109
156
213
305
964
 
60
September
30.5
51.2
55.3
70.0
91.5
143
226
262
1,020
 
61
October
30.3
44.2
50.0
61.2
83.2
144
298
618
1,160
 
60
November
30.5
46.8
52.4
67.4
98.3
228
375
457
814
 
60
December
31.5
49.2
58.7
83.7
161
320
509
697
871
 
60
 
       

The current 28-day running-average value for 11/17/2008 is 95.14 cubic feet per second.

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

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