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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily 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 Daily Streamflow Conditions
Provisional Data Subject to Revision 02028500 plot. ROCKFISH RIVER NEAR GREENFIELD, VA
Provisional Data Subject to Revision

                    

The current daily value for 03/22/2017 is 46.0 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


                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
12.0
28.0
41.0
74.0
120
194
324
442
4,140
 
72
February
16.0
49.8
59.0
88.8
136
208
332
466
2,330
 
72
March
16.0
64.0
81.0
120
169
277
450
634
3,110
 
72
April
36.0
62.0
74.1
102
150
246
422
594
3,250
 
73
May
20.0
43.0
54.0
74.0
116
184
303
416
3,690
 
73
June
1.60
18.0
26.0
42.0
68.0
110
202
327
6,940
 
73
July
0.37
8.00
12.0
24.0
41.0
67.0
137
240
1,460
 
73
August
0.09
4.20
7.50
14.0
28.0
58.0
124
193
28,800
 
73
September
0.07
4.70
6.80
12.0
27.0
64.0
158
340
6,370
 
73
October
1.60
6.66
10.0
19.0
39.0
90.0
196
317
3,180
 
72
November
8.00
16.0
21.0
34.0
66.0
133
275
400
5,000
 
72
December
9.60
22.0
28.0
60.0
106
182
316
451
2,740
 
72
 
       
Instantaneous minimum flow for period of record = 0.07 cubic feet per second.

The current daily value for 03/22/2017 is 46.0 cubic feet per second.

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

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