USGS - science for a changing world
Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-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 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02028500 plot. ROCKFISH RIVER NEAR GREENFIELD, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/22/2017 is 50.54 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of 28-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
17.9
26.2
47.3
89.9
137
215
299
349
517
 
72
February
19.5
49.8
61.8
99.1
159
235
296
381
799
 
72
March
22.8
72.6
91.3
131
188
274
370
434
722
 
72
April
48.9
71.4
99.0
143
199
310
429
506
726
 
72
May
37.1
57.7
74.5
101
154
245
340
399
679
 
73
June
5.81
33.2
44.1
67.0
107
169
273
316
736
 
73
July
1.73
15.8
20.9
33.7
57.1
88.2
179
291
907
 
73
August
0.53
6.69
13.3
21.8
38.2
79.6
164
224
1,430
 
73
September
0.71
6.77
9.91
16.1
34.9
94.1
183
306
1,360
 
73
October
2.70
7.29
11.1
18.6
43.2
117
273
349
565
 
72
November
7.43
15.8
21.2
34.3
66.5
142
251
342
728
 
72
December
10.3
22.0
29.5
62.2
120
185
332
419
688
 
72
 
       

The current 28-day running-average value for 03/22/2017 is 50.54 cubic feet per second.

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

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://va.water.usgs.gov/duration_plots/htm_28/dp02028500.htm
Page Contact Information: Virginia WSC Webmaster
Page Last Modified: 6/19/2016