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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-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 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01665500 plot. RAPIDAN RIVER NEAR RUCKERSVILLE, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 10/14/2008 is 26.57 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


                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
17.0
39.3
54.8
87.0
135
219
338
421
1,060
 
62
February
19.1
51.6
65.3
98.4
147
223
346
459
1,270
 
62
March
36.1
72.9
91.5
124
188
288
426
550
1,270
 
62
April
54.1
76.4
85.7
114
167
273
449
636
1,530
 
62
May
32.9
59.0
69.3
93.2
144
213
320
392
913
 
62
June
16.3
28.9
36.3
56.1
86.7
141
282
449
6,920
 
62
July
5.40
13.2
17.1
29.0
52.1
89.3
155
219
837
 
61
August
1.33
6.89
8.83
18.0
39.0
77.7
162
289
2,570
 
61
September
1.08
5.94
8.74
16.7
35.0
74.2
200
352
2,630
 
61
October
4.06
9.31
12.7
23.0
47.5
135
291
495
3,500
 
61
November
12.3
19.6
24.1
38.6
80.4
158
308
470
2,450
 
62
December
18.1
26.7
35.7
74.0
123
208
339
436
1,420
 
62
 
       

The current 7-day running-average value for 10/14/2008 is 26.57 cubic feet per second.

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

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