USGS - science for a changing world
Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-Day Average Streamflow
 
03471500 SOUTH FORK HOLSTON RIVER AT RIVERSIDE, NEAR CHILHOWIE, VA
LOCATION.--Latitude 36°45'37", Longitude 81°37'53", 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 7-Day Average 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 7-day running-average value for 03/22/2017 is 98.43 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


                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
22.0
32.3
44.0
74.1
112
182
278
370
1,090
 
84
February
28.7
52.3
66.0
94.3
150
235
358
459
1,450
 
84
March
38.6
67.2
86.1
118
169
247
365
494
988
 
84
April
45.6
66.9
78.4
101
138
209
298
392
1,010
 
84
May
38.7
53.9
62.0
81.0
114
165
244
305
730
 
84
June
22.9
35.7
40.0
49.6
70.0
109
169
235
982
 
84
July
15.0
27.0
29.7
37.3
49.6
69.4
106
155
633
 
84
August
16.6
24.1
26.3
30.8
40.7
62.3
103
146
715
 
84
September
17.1
21.6
22.7
26.1
32.4
43.3
64.9
100
717
 
85
October
16.7
21.0
22.3
24.9
33.1
48.7
84.9
135
517
 
84
November
16.0
23.0
24.6
29.0
42.9
73.4
132
168
1,280
 
85
December
19.3
25.4
28.6
41.9
74.9
143
220
287
552
 
85
 
       

The current 7-day running-average value for 03/22/2017 is 98.43 cubic feet per second.

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

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://va.water.usgs.gov/duration_plots/htm_7/dp03471500.htm
Page Contact Information: Virginia WSC Webmaster
Page Last Modified: 6/19/2016