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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-Day Average Streamflow
 
02029000 JAMES RIVER AT SCOTTSVILLE, VA
LOCATION.--Latitude 37°47'50", Longitude 78°29'30", North American Datum of 1927,
                    Albemarle County, VA, Hydrologic Unit 02080203.
DRAINAGE AREA.--4,581 square miles.
PERIOD OF RECORD.--October 1924 to current year. Monthly discharge only for some periods, published in WSP 1303.
DURATION STATISTIC COMPUTATION PERIOD.--October 1924 to December 1979.
REGULATION.--Flow regulated since December 1979 by Lake Moomaw 198 miles upstream, since October 1984 by Back Creek Lake 226 miles upstream, and since January 1985 by Little Back Creek Lake 229 miles upstream. Large diurnal fluctuations caused by powerplants upstream of gage during periods of low-flow. Flow augmented by summertime releases since 1982.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02029000 plot. JAMES RIVER AT SCOTTSVILLE, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/22/2017 is 2316.79 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


                02029000     JAMES RIVER AT SCOTTSVILLE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
831
1,520
2,070
3,410
5,350
7,800
11,200
13,900
20,400
 
55
February
1,010
1,870
2,550
4,710
7,090
10,100
12,500
14,400
18,000
 
55
March
1,360
3,480
4,250
5,730
8,290
11,000
14,300
16,300
22,500
 
55
April
1,890
3,660
4,380
5,700
7,810
11,200
16,000
18,500
26,100
 
55
May
1,630
2,650
3,090
4,100
6,150
8,550
11,200
12,700
16,600
 
55
June
1,180
1,680
1,910
2,710
3,910
6,170
9,230
11,100
19,900
 
55
July
513
1,040
1,230
1,590
2,350
3,230
5,590
6,780
24,800
 
55
August
481
745
886
1,290
1,980
2,920
5,890
8,060
16,700
 
55
September
470
644
722
930
1,660
3,320
6,540
9,240
19,500
 
55
October
456
631
722
1,100
1,740
3,680
6,550
8,800
17,500
 
55
November
524
798
966
1,340
2,400
4,600
7,120
8,920
16,600
 
56
December
779
980
1,150
2,010
3,510
5,710
8,230
12,400
21,400
 
55
 
       

The current 28-day running-average value for 03/22/2017 is 2316.79 cubic feet per second.

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

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