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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 3747'30", Longitude 7945'35", 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 2015.
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 02/25/2017 is 183.0 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
110
150
240
400
750
1,500
2,200
17,400
 
90
February
60.0
160
200
299
520
915
1,670
2,490
12,800
 
90
March
105
229
293
434
664
1,190
2,250
3,360
21,400
 
90
April
130
226
253
334
532
960
1,720
2,520
19,400
 
90
May
98.0
160
188
261
409
716
1,280
1,980
10,800
 
90
June
63.0
103
116
147
207
343
709
1,190
14,800
 
90
July
47.0
76.0
86.0
105
134
205
384
593
6,760
 
90
August
42.0
67.0
74.0
87.0
114
178
351
638
18,800
 
90
September
40.0
61.0
66.0
78.0
99.0
150
341
710
16,000
 
90
October
42.0
65.0
73.0
86.0
110
197
452
892
10,700
 
90
November
48.0
75.0
84.0
102
165
346
799
1,300
33,900
 
90
December
60.0
89.0
100
171
313
606
1,210
1,960
15,400
 
90
 
       
Instantaneous minimum flow for period of record = 38.0 cubic feet per second.

The current daily value for 02/25/2017 is 183.0 cubic feet per second.

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

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