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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
03207800 LEVISA FORK AT BIG ROCK, VA
LOCATION.--Latitude 37°21'13", Longitude 82°11'45", 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 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 03207800 plot. LEVISA FORK AT BIG ROCK, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 03/22/2017 is 360.93 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


                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
31.1
75.7
119
240
429
659
1,050
1,350
2,570
 
48
February
74.1
158
200
308
541
816
1,170
1,400
2,780
 
48
March
93.9
218
277
411
624
936
1,390
1,750
2,900
 
48
April
114
195
265
387
611
851
1,300
1,830
3,780
 
48
May
88.6
145
178
280
446
708
1,120
1,380
2,520
 
48
June
34.6
55.9
77.6
120
203
425
778
1,010
1,820
 
48
July
10.9
37.8
53.9
88.5
144
237
383
553
1,710
 
48
August
22.6
36.4
44.7
65.0
114
197
330
437
897
 
48
September
6.54
26.0
31.2
45.9
69.3
108
160
206
459
 
48
October
6.17
21.5
27.3
37.2
63.9
128
309
490
1,180
 
47
November
7.99
30.1
34.6
47.4
101
258
441
546
1,320
 
48
December
12.2
39.3
57.2
98.7
252
504
727
1,080
1,920
 
48
 
       

The current 14-day running-average value for 03/22/2017 is 360.93 cubic feet per second.

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

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