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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
02028500 ROCKFISH RIVER NEAR GREENFIELD, VA
LOCATION.--Latitude 37°52'10", Longitude 78°49'25", North American Datum of 1927,
                    Nelson County, VA, Hydrologic Unit 02080203.
DRAINAGE AREA.--94.8 square miles.
PERIOD OF RECORD.--April 1943 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--No known regulation.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02028500 plot. ROCKFISH RIVER NEAR GREENFIELD, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 03/22/2017 is 48.29 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


                02028500     ROCKFISH RIVER NEAR GREENFIELD, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
15.0
26.6
45.9
79.7
133
212
318
381
890
 
72
February
17.9
50.8
60.1
90.5
150
225
332
435
889
 
72
March
19.9
67.2
86.1
131
189
283
442
529
791
 
72
April
42.6
68.1
82.5
118
184
304
455
593
890
 
72
May
26.9
50.5
63.5
87.7
136
218
339
422
708
 
73
June
2.52
26.2
33.3
54.5
84.7
143
267
380
1,240
 
73
July
1.34
11.6
16.3
28.5
49.0
76.1
142
265
1,510
 
73
August
0.23
5.19
9.85
18.5
33.1
69.5
158
221
2,610
 
73
September
0.14
5.69
8.27
14.5
30.4
75.2
200
342
2,600
 
73
October
2.39
7.08
11.0
19.2
41.8
104
247
402
923
 
72
November
6.59
16.6
21.2
34.5
69.9
141
271
415
1,230
 
72
December
11.7
22.7
29.2
62.6
120
201
324
435
826
 
72
 
       

The current 14-day running-average value for 03/22/2017 is 48.29 cubic feet per second.

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

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