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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-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 28-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 28-day running-average value for 03/22/2017 is 63.29 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


                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
16.6
28.5
35.1
69.4
107
147
213
243
402
 
55
February
13.4
42.2
49.5
75.7
131
184
243
316
527
 
55
March
27.5
53.8
67.7
106
165
230
317
390
617
 
55
April
45.9
62.4
77.1
111
167
249
329
400
790
 
55
May
43.1
58.8
68.0
96.3
126
184
267
329
769
 
55
June
23.0
40.4
47.6
64.5
92.9
142
199
260
509
 
55
July
13.3
22.9
28.2
40.4
54.0
82.1
150
261
605
 
55
August
10.8
18.5
22.5
33.2
42.8
62.2
88.1
135
308
 
55
September
12.7
18.8
21.1
27.8
39.7
59.1
114
159
382
 
55
October
15.7
17.8
21.9
29.7
41.6
59.2
119
258
494
 
54
November
17.6
24.0
28.4
37.3
52.0
93.6
175
275
414
 
55
December
18.9
23.9
28.6
44.2
78.4
136
200
247
410
 
55
 
       

The current 28-day running-average value for 03/22/2017 is 63.29 cubic feet per second.

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

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