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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
01667500 RAPIDAN RIVER NEAR CULPEPER, VA
LOCATION.--Latitude 38°21'01", Longitude 77°58'31", North American Datum of 1927,
                    Culpeper County, VA, Hydrologic Unit 02080103.
DRAINAGE AREA.--468 square miles.
PERIOD OF RECORD.--October 1930 to current year. Monthly discharge only for some periods, published in WSP 1302.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007.
REGULATION.--Low-water flow regulated by operation of mill prior to 1977, since 1986 by a powerplant. Some diversion during summer months for irrigation.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with Daily Streamflow Conditions
Provisional Data Subject to Revision 01667500 plot. RAPIDAN RIVER NEAR CULPEPER, VA
Provisional Data Subject to Revision

                    

The current daily value for 10/11/2008 is 88 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of Daily Streamflow
            Flow values in cubic feet per second


                01667500     RAPIDAN RIVER NEAR CULPEPER, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
47.0
120
162
287
466
761
1,270
1,720
11,300
 
77
February
44.0
164
220
341
542
812
1,280
1,760
12,800
 
77
March
94.0
254
303
420
602
936
1,520
2,120
15,900
 
77
April
167
242
274
373
534
865
1,360
1,840
38,000
 
77
May
97.0
181
209
278
422
645
1,000
1,350
14,000
 
77
June
42.0
95.0
121
180
276
448
842
1,290
43,500
 
77
July
18.0
45.0
61.0
109
190
324
614
900
6,590
 
77
August
2.70
24.0
38.0
78.0
155
292
598
1,020
22,600
 
77
September
1.50
23.0
39.0
66.0
137
280
659
1,140
34,900
 
77
October
2.20
34.0
49.0
88.0
163
380
815
1,430
37,900
 
77
November
8.00
69.4
89.9
140
260
518
1,010
1,460
22,500
 
77
December
20.0
89.0
120
216
388
648
1,140
1,660
10,400
 
77
 
       
Instantaneous minimum flow for period of record = 1.20 cubic feet per second.

The current daily value for 10/11/2008 is 88 cubic feet per second.

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

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