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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-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 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02040000 plot. APPOMATTOX RIVER AT MATTOAX, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 03/22/2017 is 283.14 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of 7-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
125
231
281
397
659
1,190
2,060
2,910
7,900
 
89
February
137
264
327
479
771
1,360
2,110
2,710
8,130
 
89
March
134
338
400
569
859
1,460
2,250
2,980
9,570
 
89
April
184
289
352
480
709
1,330
2,210
2,780
8,980
 
89
May
108
208
237
327
478
711
1,350
2,140
9,290
 
90
June
26.9
111
140
205
311
481
845
1,230
16,600
 
90
July
19.0
68.6
89.4
132
217
372
694
1,250
10,000
 
90
August
4.03
40.9
65.6
118
204
377
710
1,180
18,300
 
90
September
16.0
43.4
66.1
95.2
169
305
829
1,590
8,950
 
90
October
17.4
57.3
75.4
115
210
379
809
1,440
14,200
 
89
November
59.9
108
126
193
309
603
1,170
1,850
13,000
 
89
December
88.1
143
185
293
474
861
1,630
2,240
6,950
 
89
 
       

The current 7-day running-average value for 03/22/2017 is 283.14 cubic feet per second.

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

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