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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average 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 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02016000 plot. COWPASTURE RIVER NEAR CLIFTON FORGE, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 10/14/2008 is 72.64 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


                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
77.6
118
176
287
506
942
1,560
1,870
4,310
 
82
February
87.7
155
222
363
643
1,100
1,660
2,020
4,270
 
82
March
89.9
255
335
515
858
1,400
2,090
2,460
4,340
 
82
April
148
256
298
435
750
1,250
1,900
2,210
4,480
 
82
May
127
186
220
316
535
848
1,360
1,560
5,080
 
82
June
79.6
121
140
186
280
491
1,100
1,590
3,460
 
82
July
55.7
82.2
95.4
121
158
250
474
635
3,730
 
82
August
55.1
73.0
81.0
96.4
131
217
475
721
2,760
 
82
September
51.5
63.9
69.8
83.1
110
182
487
910
2,800
 
82
October
43.1
65.1
73.8
88.9
122
250
643
1,070
2,820
 
81
November
47.0
77.3
84.1
105
184
433
843
1,260
4,820
 
82
December
66.3
89.9
103
193
379
725
1,150
1,530
3,320
 
82
 
       

The current 14-day running-average value for 10/14/2008 is 72.64 cubic feet per second.

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

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