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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-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 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02040000 plot. APPOMATTOX RIVER AT MATTOAX, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/22/2017 is 259.64 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


                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
240
295
479
723
1,180
1,660
1,930
3,980
 
89
February
183
321
382
539
931
1,320
1,730
2,040
4,280
 
89
March
188
395
493
688
1,000
1,430
1,960
2,240
3,850
 
89
April
232
365
478
686
961
1,430
2,110
2,550
3,980
 
89
May
200
261
309
425
638
1,020
1,610
1,970
3,060
 
90
June
47.9
164
200
276
415
650
933
1,370
4,620
 
90
July
25.4
92.8
118
178
263
412
822
1,230
5,380
 
90
August
8.63
55.2
88.3
141
244
433
817
1,020
5,040
 
90
September
18.2
58.4
87.5
118
214
442
847
1,360
5,050
 
90
October
25.7
59.1
78.6
117
224
426
905
1,580
4,280
 
89
November
36.3
97.9
118
194
294
585
1,140
1,550
4,410
 
89
December
81.2
130
180
295
506
894
1,370
2,000
3,420
 
89
 
       

The current 28-day running-average value for 03/22/2017 is 259.64 cubic feet per second.

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

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