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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 2007.
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 10/14/2008 is 17 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
26.0
38.0
77.0
124
195
327
445
3,060
 
64
February
16.0
49.4
60.0
93.0
140
212
336
501
2,330
 
64
March
16.0
64.0
81.0
118
168
279
452
631
3,110
 
64
April
36.0
61.0
72.0
99.0
148
246
425
591
3,250
 
65
May
20.0
42.0
52.0
72.0
113
177
289
402
3,690
 
65
June
1.60
18.0
25.0
42.0
69.0
110
206
335
6,940
 
65
July
0.37
8.00
12.0
25.0
43.0
69.0
137
247
1,460
 
65
August
0.09
4.70
7.50
15.0
30.0
60.0
130
200
28,800
 
65
September
0.07
4.24
6.90
13.0
28.0
68.0
171
350
6,370
 
65
October
1.60
7.00
10.0
18.0
39.0
97.2
210
339
3,180
 
64
November
8.00
16.0
20.0
33.0
68.0
137
287
404
5,000
 
64
December
9.60
22.0
28.0
59.0
105
176
303
440
2,740
 
64
 
       
Instantaneous minimum flow for period of record = 0.07 cubic feet per second.

The current daily value for 10/14/2008 is 17 cubic feet per second.

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

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Page Last Modified: 9/19/2008