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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-Day Average Streamflow
 
01665500 RAPIDAN RIVER NEAR RUCKERSVILLE, VA.
LOCATION.--Latitude 38°16'50", Longitude 78°20'25", North American Datum of 1927,
                    Madison County, VA, Hydrologic Unit 02080103.
DRAINAGE AREA.--115 square miles.
PERIOD OF RECORD.--September 1942 to June 1995, October 1998 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007.
REGULATION.--Diversion after 1973, estimated 0.77 cfs.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01665500 plot. RAPIDAN RIVER NEAR RUCKERSVILLE, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 10/14/2008 is 34.68 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


                01665500     RAPIDAN RIVER NEAR RUCKERSVILLE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
19.9
35.0
58.0
93.0
147
223
303
372
521
 
62
February
20.3
52.1
73.3
111
160
229
304
345
542
 
62
March
41.1
81.7
101
134
193
271
354
442
644
 
62
April
57.4
89.4
107
145
197
316
455
536
721
 
62
May
45.9
71.0
85.1
115
172
235
347
376
653
 
62
June
22.3
40.4
53.3
79.2
126
188
314
377
1,790
 
62
July
6.79
20.3
25.9
37.8
71.2
108
195
275
963
 
61
August
4.02
8.96
12.9
26.0
47.2
95.1
164
285
839
 
61
September
3.11
7.07
9.11
20.0
41.0
92.0
219
334
878
 
61
October
4.95
9.45
13.1
22.6
50.3
139
338
566
1,060
 
60
November
9.36
20.2
23.6
36.4
86.2
178
298
358
1,070
 
62
December
19.9
29.6
36.8
74.3
126
195
351
450
790
 
62
 
       

The current 28-day running-average value for 10/14/2008 is 34.68 cubic feet per second.

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

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