USGS - science for a changing world
Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
03170000 LITTLE RIVER AT GRAYSONTOWN, VA
LOCATION.--Latitude 37°02'15", Longitude 80°33'25", North American Datum of 1927,
                    Pulaski County, VA, Hydrologic Unit 05050001.
DRAINAGE AREA.--309 square miles.
PERIOD OF RECORD.--October 1928 to current year. Published as "at Graysonton" prior to October 1990.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007.
REGULATION.--No known regulation.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 03170000 plot. LITTLE RIVER AT GRAYSONTOWN, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 08/28/2008 is 82.36 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of 14-Day Average Streamflow
            Flow values in cubic feet per second


                03170000     LITTLE RIVER AT GRAYSONTOWN, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
90.4
125
164
234
341
491
660
781
1,420
 
79
February
89.8
147
182
292
416
562
780
931
1,490
 
79
March
85.3
208
244
347
467
632
836
983
1,780
 
79
April
121
230
250
305
438
656
894
1,090
2,280
 
79
May
113
198
222
270
382
496
654
787
1,900
 
79
June
82.0
149
168
228
314
428
565
731
1,670
 
79
July
74.7
111
127
179
240
318
445
583
1,650
 
79
August
38.5
92.8
113
152
214
278
396
545
2,570
 
79
September
58.4
88.3
107
134
182
266
466
652
1,770
 
79
October
70.5
96.0
108
140
192
320
537
795
1,840
 
78
November
84.1
118
133
169
232
353
563
688
1,530
 
79
December
91.1
127
143
195
287
398
558
658
1,320
 
79
 
       

The current 14-day running-average value for 08/28/2008 is 82.36 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_14/dp03170000.htm
Page Contact Information: Virginia WSC Webmaster
Page Last Modified: 8/6/2008