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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
03529500 POWELL RIVER AT BIG STONE GAP, VA
LOCATION.--Latitude 3652'08", Longitude 8246'32", North American Datum of 1927,
                    Wise County, VA, Hydrologic Unit 06010206
DRAINAGE AREA.--112 square miles.
PERIOD OF RECORD.--October 1944 to September 1959, October 1978 to September 1981, October 2001 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--No known regulation.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.

     Duration Plot with Daily Streamflow Conditions
Provisional Data Subject to Revision
03529500 plot. 
POWELL RIVER AT BIG STONE GAP, VA
Provisional Data Subject to Revision

                    

The current daily value for 02/25/2017 is 154.0 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


                03529500     POWELL RIVER AT BIG STONE GAP, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
12.0
32.0
51.3
110
192
335
678
1,020
6,330
 
32
February
42.0
79.0
94.0
136
214
366
681
1,160
7,860
 
32
March
77.0
117
133
184
263
412
708
1,050
7,280
 
32
April
79.0
106
119
161
230
357
560
792
3,360
 
32
May
37.0
64.0
77.0
110
157
242
396
562
3,580
 
32
June
18.0
30.0
37.0
51.0
79.0
138
270
404
1,360
 
32
July
14.0
23.0
28.0
38.2
62.0
112
197
297
1,520
 
32
August
7.20
13.0
18.0
29.0
52.0
95.8
153
238
1,860
 
32
September
5.00
8.40
10.0
23.0
36.0
60.0
111
169
2,070
 
32
October
5.30
9.46
12.0
18.0
30.0
58.0
113
164
1,250
 
32
November
6.00
11.0
16.0
25.0
58.0
135
253
377
1,390
 
32
December
6.80
26.0
33.0
57.0
140
280
504
846
3,620
 
32
 
       
Instantaneous minimum flow for period of record = 4.00 cubic feet per second.

The current daily value for 02/25/2017 is 154.0 cubic feet per second.

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

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