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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
03471500 SOUTH FORK HOLSTON RIVER AT RIVERSIDE, NEAR CHILHOWIE, VA
LOCATION.--Latitude 3645'37", Longitude 8137'53", North American Datum of 1927,
                    Smyth County, VA, Hydrologic Unit 06010102.
DRAINAGE AREA.--76.6 square miles.
PERIOD OF RECORD.--October 1920 to December 1931, July 1942 to current year. Monthly discharge only for some periods, published in WSP 1306. Prior to October 1924, published as "near Chilhowie." June 1907 to December 1909, at site 4.5 mi downstream also published as "near Chilhowie"; records not equivalent.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--Some diurnal fluctuation caused by mill prior to 1951.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.

     Duration Plot with Daily Streamflow Conditions
Provisional Data Subject to Revision
03471500 plot. 
SOUTH FORK HOLSTON RIVER AT RIVERSIDE, NEAR CHILHOWIE, VA
Provisional Data Subject to Revision

                    

The current daily value for 03/22/2017 is 99.0 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


                03471500     SOUTH FORK HOLSTON RIVER AT RIVERSIDE, NEAR CHILHOWIE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
15.0
32.2
41.0
70.0
102
166
280
398
3,780
 
84
February
29.0
53.0
63.0
88.0
137
218
366
503
2,080
 
84
March
34.0
64.0
81.0
109
155
230
366
514
2,070
 
84
April
44.0
62.0
74.0
94.0
126
192
287
394
2,870
 
84
May
36.0
51.0
58.0
75.2
104
151
235
316
1,770
 
84
June
17.0
33.0
37.0
46.0
65.0
96.0
155
222
3,450
 
84
July
8.00
26.0
28.0
36.0
47.0
66.0
102
143
1,820
 
84
August
14.0
23.0
25.0
30.0
39.0
57.0
92.0
140
1,250
 
85
September
12.0
21.0
22.0
25.0
31.0
43.0
64.0
90.4
1,940
 
85
October
10.0
20.0
22.0
25.0
33.0
49.0
78.4
114
1,170
 
85
November
13.0
23.0
24.0
29.0
44.0
73.0
132
188
4,040
 
85
December
9.00
25.0
28.0
41.0
73.0
129
220
325
1,380
 
85
 
       
Instantaneous minimum flow for period of record = 2.00 cubic feet per second.

The current daily value for 03/22/2017 is 99.0 cubic feet per second.

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

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