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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
02016000 COWPASTURE RIVER NEAR CLIFTON FORGE, VA
LOCATION.--Latitude 37°47'30", Longitude 79°45'35", North American Datum of 1927,
                    Alleghany County, VA, Hydrologic Unit 02080201.
DRAINAGE AREA.--461 square miles.
PERIOD OF RECORD.--March 1925 to current year. Records for May 1907 to August 1908, published in WSP 242, are unreliable and should not be used.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007.
REGULATION.--Occasional withdrawal of water during summer months for the filling of swimming pool at camp 10 to 15 miles above gage.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with Daily Streamflow Conditions
Provisional Data Subject to Revision 02016000 plot. COWPASTURE RIVER NEAR CLIFTON FORGE, VA
Provisional Data Subject to Revision

                    

The current daily value for 10/14/2008 is 65 cubic feet per second.

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


                02016000     COWPASTURE RIVER NEAR CLIFTON FORGE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
70.0
109
150
247
404
760
1,540
2,260
17,400
 
82
February
60.0
156
200
303
535
934
1,720
2,520
12,800
 
82
March
105
231
290
429
658
1,190
2,200
3,350
21,400
 
82
April
130
225
251
330
518
938
1,690
2,450
19,400
 
82
May
98.0
157
185
254
385
674
1,250
1,890
10,800
 
82
June
63.0
100
116
147
207
348
720
1,210
14,800
 
82
July
47.0
75.0
85.0
106
137
205
368
582
6,760
 
82
August
42.0
66.0
74.0
86.0
115
185
372
681
18,800
 
82
September
40.0
60.0
65.0
78.0
100
156
363
722
16,000
 
82
October
42.0
65.0
72.0
86.0
112
205
470
937
10,700
 
82
November
48.0
75.0
84.0
105
172
360
825
1,330
33,900
 
82
December
60.0
87.0
100
171
310
590
1,180
1,860
15,400
 
82
 
       
Instantaneous minimum flow for period of record = 38.0 cubic feet per second.

The current daily value for 10/14/2008 is 65 cubic feet per second.

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

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Page Last Modified: 9/19/2008