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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-Day Average Streamflow
 
02053800 SOUTH FORK ROANOKE RIVER NEAR SHAWSVILLE, VA
LOCATION.--Latitude 37°08'24", Longitude 80°16'00", North American Datum of 1927,
                    Montgomery County, VA, Hydrologic Unit 03010101
DRAINAGE AREA.--109 square miles.
PERIOD OF RECORD.--October 1960 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--No known regulation.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02053800 plot. SOUTH FORK ROANOKE RIVER NEAR SHAWSVILLE, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 03/22/2017 is 67 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


                02053800     SOUTH FORK ROANOKE RIVER NEAR SHAWSVILLE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
11.9
25.8
36.2
64.0
95.1
155
242
327
911
 
55
February
11.4
39.0
46.9
70.5
115
188
271
403
1,030
 
55
March
21.9
50.6
60.5
97.0
155
241
362
483
1,270
 
55
April
39.4
53.9
65.3
86.4
129
217
342
451
1,340
 
55
May
35.4
47.0
54.4
76.0
107
165
250
317
1,250
 
55
June
14.7
28.0
35.4
49.2
73.5
113
188
270
1,600
 
55
July
8.93
21.1
25.3
33.9
46.9
65.9
109
162
1,160
 
55
August
7.54
14.8
19.3
28.8
38.4
55.3
96.0
127
461
 
55
September
9.56
16.1
19.7
24.9
32.9
48.6
101
207
988
 
55
October
11.7
17.6
21.3
29.4
41.6
64.4
128
194
958
 
54
November
15.9
22.6
26.4
35.4
50.2
94.3
168
246
1,150
 
55
December
16.3
22.9
27.0
43.1
76.0
131
214
294
749
 
55
 
       

The current 7-day running-average value for 03/22/2017 is 67 cubic feet per second.

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

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