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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-Day Average Streamflow
 
03531500 POWELL RIVER NEAR JONESVILLE, VA
LOCATION.--Latitude 36°39'43", Longitude 83°05'42", North American Datum of 1927,
                    Lee County, VA, Hydrologic Unit 06010206.
DRAINAGE AREA.--319 square miles.
PERIOD OF RECORD.--October 1931 to current year. Monthly discharge only for some periods, published in WSP 1306.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--No known regulation.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 03531500 plot. POWELL RIVER NEAR JONESVILLE, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/22/2017 is 829 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


                03531500     POWELL RIVER NEAR JONESVILLE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
41.9
109
188
413
769
1,090
1,410
1,650
2,940
 
84
February
58.2
252
348
600
883
1,230
1,790
2,210
3,000
 
84
March
108
401
500
688
935
1,410
1,920
2,220
3,750
 
84
April
164
344
436
577
899
1,240
1,680
2,070
3,650
 
84
May
93.8
199
245
373
617
924
1,210
1,400
2,670
 
84
June
46.1
101
131
195
318
539
859
1,050
1,690
 
84
July
45.8
77.3
94.5
124
202
333
511
637
1,710
 
84
August
43.0
62.8
75.4
101
174
304
450
585
1,290
 
84
September
23.8
36.7
47.0
69.3
112
187
311
397
1,270
 
84
October
22.5
29.9
34.8
57.1
91.5
158
330
483
1,160
 
83
November
22.9
32.6
43.4
62.1
129
311
559
695
1,470
 
84
December
30.0
57.3
72.9
146
357
776
1,190
1,460
2,220
 
84
 
       

The current 28-day running-average value for 03/22/2017 is 829 cubic feet per second.

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

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