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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 2015.
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 03/22/2017 is 240.0 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
123
163
279
460
752
1,260
1,690
11,300
 
85
February
44.0
168
218
330
530
809
1,260
1,730
12,800
 
85
March
94.0
250
300
422
608
955
1,520
2,130
15,900
 
85
April
167
244
279
377
536
872
1,350
1,840
38,000
 
85
May
97.0
184
214
285
430
666
1,050
1,470
14,000
 
85
June
42.0
97.0
125
187
283
459
857
1,290
43,500
 
85
July
18.0
46.0
62.0
108
189
320
589
875
6,590
 
85
August
2.70
24.8
39.0
75.0
149
276
566
950
22,600
 
85
September
1.50
21.6
39.0
65.0
131
267
638
1,090
34,900
 
85
October
2.20
32.0
49.0
88.0
161
377
809
1,400
37,900
 
85
November
8.00
71.0
89.0
140
256
503
981
1,440
22,500
 
85
December
20.0
88.0
121
218
392
666
1,170
1,680
10,400
 
85
 
       
Instantaneous minimum flow for period of record = 1.20 cubic feet per second.

The current daily value for 03/22/2017 is 240.0 cubic feet per second.

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

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