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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
02040000 APPOMATTOX RIVER AT MATTOAX, VA
LOCATION.--Latitude 37°25'17", Longitude 77°51'33", North American Datum of 1927,
                    Amelia County, VA, Hydrologic Unit 02080207.
DRAINAGE AREA.--725 square miles.
PERIOD OF RECORD.--August 1900 to December 1905, March 1926 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 02040000 plot. APPOMATTOX RIVER AT MATTOAX, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 03/22/2017 is 260.36 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


                02040000     APPOMATTOX RIVER AT MATTOAX, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
123
236
292
430
711
1,180
1,870
2,550
5,410
 
89
February
148
274
357
505
869
1,360
2,000
2,490
5,520
 
89
March
147
362
437
634
978
1,440
2,050
2,780
5,740
 
89
April
201
311
379
550
845
1,400
2,120
2,570
4,970
 
89
May
168
229
257
365
521
800
1,530
2,030
5,020
 
90
June
31.9
129
159
230
354
534
912
1,190
8,790
 
90
July
21.2
75.5
101
148
232
391
711
1,250
8,930
 
90
August
4.94
43.6
74.3
127
229
409
710
1,110
9,630
 
90
September
18.0
45.8
71.2
105
181
351
912
1,380
6,030
 
90
October
20.9
58.9
75.1
116
220
391
842
1,430
7,550
 
89
November
47.1
104
123
195
309
635
1,170
1,670
7,850
 
89
December
88.6
142
181
298
497
876
1,510
2,110
5,350
 
89
 
       

The current 14-day running-average value for 03/22/2017 is 260.36 cubic feet per second.

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

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