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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-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 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 03531500 plot. POWELL RIVER NEAR JONESVILLE, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 03/22/2017 is 646.71 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


                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
33.7
91.5
160
330
660
1,180
1,940
2,540
6,340
 
84
February
37.9
173
256
445
741
1,290
2,180
2,730
7,140
 
84
March
92.7
302
356
518
815
1,340
2,260
2,980
7,410
 
84
April
125
227
277
410
632
1,080
1,760
2,170
9,280
 
84
May
49.1
138
167
250
412
710
1,240
1,680
4,460
 
84
June
28.1
75.9
94.3
133
218
377
727
956
3,760
 
84
July
30.0
61.0
72.6
103
159
281
529
718
1,620
 
84
August
29.3
46.6
57.6
80.2
136
250
415
636
2,560
 
84
September
18.0
29.4
37.6
54.3
85.3
143
244
343
1,580
 
84
October
19.1
27.0
33.6
50.3
78.9
151
330
539
2,180
 
83
November
23.0
33.0
43.3
64.9
138
349
731
1,050
4,940
 
84
December
27.7
54.5
76.2
151
369
856
1,470
2,020
5,190
 
84
 
       

The current 7-day running-average value for 03/22/2017 is 646.71 cubic feet per second.

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

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