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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
02037500 JAMES RIVER NEAR RICHMOND, VA
LOCATION.--Latitude 3733'47", Longitude 7732'50", North American Datum of 1927,
                    Henrico County, VA, Hydrologic Unit 02080205.
DRAINAGE AREA.--6,753 square miles.
PERIOD OF RECORD.--October 1934 to current year. Gage-height records collected in vicinity of Mayo's Bridge, at mile 109.5, 1876-1956, and at mile 108.7 since 1957, are contained in reports of the National Weather Service.
DURATION STATISTIC COMPUTATION PERIOD.--October 1934 to June 1982.
REGULATION.--Regulation from upstream powerplants. Diversion through the Kanawha Canal. Flow augmented by summertime releases since June 1982.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.

     Duration Plot with Daily Streamflow Conditions
Provisional Data Subject to Revision
02037500 plot. 
JAMES RIVER NEAR RICHMOND, VA
Provisional Data Subject to Revision

                    

The current daily value for 03/22/2017 is 3190.0 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


                02037500     JAMES RIVER NEAR RICHMOND, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
210
1,080
1,700
3,970
6,290
11,000
18,900
28,100
117,000
 
48
February
140
2,200
3,130
4,880
7,900
12,700
19,700
28,700
134,000
 
48
March
1,670
3,310
4,570
6,180
9,120
15,000
24,800
32,300
136,000
 
48
April
1,300
3,200
3,700
5,120
7,160
11,500
20,500
30,400
152,000
 
48
May
590
2,040
2,520
3,410
5,300
8,380
14,300
19,000
74,300
 
48
June
194
967
1,240
2,060
3,280
5,350
9,290
13,500
296,000
 
47
July
20.0
398
610
1,100
2,160
3,380
5,510
9,280
41,300
 
47
August
20.0
118
256
775
1,650
3,200
6,480
13,000
195,000
 
47
September
10.0
46.0
112
570
1,280
2,520
5,740
10,600
125,000
 
47
October
10.0
80.2
243
850
1,500
3,400
8,210
15,600
152,000
 
48
November
174
491
775
1,280
2,250
4,900
9,690
14,300
54,000
 
48
December
123
720
1,100
2,140
4,420
7,530
13,500
19,900
116,000
 
48
 
       
Instantaneous minimum flow for period of record = 10.0 cubic feet per second.

The current daily value for 03/22/2017 is 3190.0 cubic feet per second.

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

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