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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
03207800 LEVISA FORK AT BIG ROCK, VA
LOCATION.--Latitude 3721'13", Longitude 8211'45", North American Datum of 1927,
                    Buchanan County, VA, Hydrologic Unit 05070202.
DRAINAGE AREA.--297 square miles.
PERIOD OF RECORD.--October 1967 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
03207800 plot. 
LEVISA FORK AT BIG ROCK, VA
Provisional Data Subject to Revision

                    

The current daily value for 03/22/2017 is 368.0 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


                03207800     LEVISA FORK AT BIG ROCK, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
20.0
70.0
98.0
190
344
621
1,130
1,690
11,600
 
48
February
60.0
123
164
268
422
702
1,250
1,900
11,200
 
48
March
70.0
172
230
330
499
834
1,420
2,010
10,900
 
48
April
88.0
162
210
304
476
747
1,220
1,940
24,800
 
48
May
52.0
108
136
199
312
546
912
1,490
16,300
 
48
June
20.0
45.0
60.0
92.2
153
296
566
873
6,990
 
48
July
8.10
32.0
43.0
69.0
112
190
354
547
3,720
 
48
August
7.50
25.0
32.0
50.0
82.0
146
277
414
2,190
 
48
September
5.60
19.0
23.1
35.0
55.0
93.0
174
262
4,050
 
48
October
5.10
17.0
22.0
32.0
51.0
109
250
418
4,520
 
48
November
8.40
26.0
31.0
44.2
99.0
235
477
738
5,710
 
48
December
7.20
37.0
53.0
94.0
218
460
802
1,220
7,350
 
48
 
       
Instantaneous minimum flow for period of record = 5.00 cubic feet per second.

The current daily value for 03/22/2017 is 368.0 cubic feet per second.

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

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