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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-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 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 03531500 plot. POWELL RIVER NEAR JONESVILLE, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 03/22/2017 is 769.79 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


                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
40.6
89.4
173
380
749
1,130
1,710
2,070
4,040
 
84
February
40.7
191
288
518
850
1,310
1,890
2,390
4,750
 
84
March
95.4
332
411
599
887
1,380
2,210
2,760
5,800
 
84
April
140
266
323
465
732
1,190
1,670
2,120
4,980
 
84
May
58.9
153
189
284
472
799
1,240
1,540
3,150
 
84
June
31.3
84.0
101
154
248
442
741
988
2,730
 
84
July
31.4
67.4
79.7
113
173
308
515
681
1,230
 
84
August
32.8
55.1
63.6
88.1
146
272
458
599
1,990
 
84
September
18.8
31.8
38.5
59.3
95.4
156
259
378
897
 
84
October
20.7
27.9
33.4
52.4
82.8
160
336
500
1,920
 
83
November
22.6
32.3
43.5
66.6
139
342
648
877
2,720
 
84
December
28.1
57.9
81.2
160
387
848
1,360
1,730
3,260
 
84
 
       

The current 14-day running-average value for 03/22/2017 is 769.79 cubic feet per second.

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

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