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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-Day Average Streamflow
 
01673000 PAMUNKEY RIVER NEAR HANOVER, VA
LOCATION.--Latitude 37°46'03", Longitude 77°19'57", North American Datum of 1927,
                    Hanover County, VA, Hydrologic Unit 02080106.
DRAINAGE AREA.--1,078 square miles.
PERIOD OF RECORD.--October 1941 to current year. Monthly discharge only for some periods, published in WSP 1302.
DURATION STATISTIC COMPUTATION PERIOD.--October 1941 to January 1972.
REGULATION.--Slight regulation from small mill dams upstream and by Lake Anna Power Station on North River since January 1972. Some diversion during summer months for irrigation.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01673000 plot. PAMUNKEY RIVER NEAR HANOVER, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 08/27/2008 is 63.18 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


                01673000     PAMUNKEY RIVER NEAR HANOVER, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
166
311
369
707
1,060
1,570
2,230
2,430
3,630
 
30
February
213
497
645
807
1,220
1,650
2,210
2,500
3,290
 
30
March
490
766
856
1,090
1,520
1,960
2,390
3,290
3,960
 
30
April
407
568
690
987
1,490
2,060
2,620
3,110
3,650
 
30
May
315
411
463
677
948
1,400
1,900
2,060
2,800
 
30
June
209
263
300
407
583
836
1,340
1,920
3,270
 
30
July
82.2
144
160
223
359
513
921
1,170
2,970
 
30
August
59.3
71.4
92.4
185
326
662
1,580
2,430
7,000
 
30
September
27.6
57.7
67.2
139
294
594
1,030
1,830
6,950
 
30
October
21.9
40.1
59.2
143
292
539
946
1,140
2,710
 
30
November
61.2
101
148
229
443
775
1,380
2,200
2,840
 
31
December
116
175
250
400
581
1,040
1,790
2,180
4,330
 
31
 
       

The current 28-day running-average value for 08/27/2008 is 63.18 cubic feet per second.

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

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