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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-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 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01673000 plot. PAMUNKEY RIVER NEAR HANOVER, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 10/11/2008 is 112.86 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


                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
170
252
319
629
972
1,600
2,650
3,280
5,030
 
30
February
230
408
517
738
1,090
1,760
2,600
3,680
8,250
 
30
March
416
582
683
949
1,370
2,160
3,100
3,850
7,880
 
30
April
329
449
504
751
1,100
1,650
2,510
3,200
6,170
 
30
May
218
317
360
467
707
1,170
1,910
2,450
6,640
 
30
June
135
176
196
266
445
675
1,120
1,850
6,930
 
30
July
50.1
98.8
114
156
276
487
882
1,580
7,870
 
30
August
36.0
61.0
73.6
130
249
524
1,460
2,670
23,400
 
30
September
14.7
31.9
53.0
91.2
229
416
903
1,490
3,280
 
30
October
20.3
37.5
58.1
131
272
457
964
1,720
7,730
 
30
November
69.3
119
157
244
417
715
1,370
2,170
6,700
 
31
December
134
174
237
383
614
1,110
1,890
3,100
9,280
 
31
 
       

The current 7-day running-average value for 10/11/2008 is 112.86 cubic feet per second.

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

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