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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-Day Average Streamflow
 
01674500 MATTAPONI RIVER NEAR BEULAHVILLE, VA
LOCATION.--Latitude 37°53'16", Longitude 77°09'48", North American Datum of 1927,
                    King William County, VA, Hydrologic Unit 02080105.
DRAINAGE AREA.--602 square miles.
PERIOD OF RECORD.--September 1941 to September 1987, October 1989 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007.
REGULATION.--Some regulation in the past, during low flows, caused by mill on Po River.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01674500 plot. MATTAPONI RIVER NEAR BEULAHVILLE, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 08/28/2008 is 6.23 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


                01674500     MATTAPONI RIVER NEAR BEULAHVILLE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
83.4
146
219
432
678
941
1,460
1,800
4,730
 
64
February
75.1
234
320
496
733
1,100
1,600
2,020
5,180
 
64
March
71.3
300
386
564
865
1,240
1,850
2,390
7,330
 
64
April
84.7
258
309
475
775
1,310
1,820
2,160
7,660
 
64
May
50.4
142
180
293
507
833
1,310
1,700
3,990
 
64
June
14.1
53.8
82.0
156
278
482
817
1,200
10,700
 
64
July
2.09
31.2
44.0
81.0
163
284
521
908
9,170
 
64
August
0.34
22.6
30.2
60.5
145
335
618
982
8,280
 
64
September
3.63
15.3
21.3
43.1
116
238
599
1,020
4,470
 
65
October
3.34
19.9
27.3
59.9
161
330
734
1,050
5,640
 
64
November
20.7
54.0
72.3
154
302
526
954
1,330
3,540
 
64
December
41.7
101
145
281
469
768
1,240
1,670
4,610
 
64
 
       

The current 7-day running-average value for 08/28/2008 is 6.23 cubic feet per second.

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

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