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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily 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 Daily Streamflow Conditions
Provisional Data Subject to Revision 03170000 plot. LITTLE RIVER AT GRAYSONTOWN, VA
Provisional Data Subject to Revision

                    

The current daily value for 08/28/2008 is 607 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


                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
71.0
110
136
202
310
447
667
942
9,000
 
79
February
60.0
135
173
260
374
531
793
1,100
6,300
 
79
March
60.0
194
229
304
417
574
890
1,320
6,440
 
79
April
110
203
225
277
384
542
818
1,160
8,090
 
79
May
103
172
192
240
337
463
634
834
5,860
 
79
June
68.0
119
140
196
275
374
540
733
10,000
 
79
July
51.0
94.0
110
161
220
304
429
581
2,630
 
79
August
31.0
78.0
95.0
130
183
250
375
555
8,470
 
79
September
40.0
80.0
94.0
120
166
230
420
603
9,330
 
79
October
59.0
92.0
104
131
180
282
466
694
13,200
 
79
November
81.0
113
128
158
219
335
503
690
8,020
 
79
December
66.0
110
128
180
267
377
542
702
6,260
 
79
 
       
Instantaneous minimum flow for period of record = 21.0 cubic feet per second.

The current daily value for 08/28/2008 is 607 cubic feet per second.

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

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