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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 37°33'47", Longitude 77°32'50", 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 08/28/2008 is 1370 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
1,090
1,700
3,980
6,290
11,000
18,900
27,800
117,000
 
48
February
140
2,200
3,140
4,880
7,900
12,600
19,600
28,500
134,000
 
48
March
1,670
3,320
4,570
6,180
9,120
15,000
24,800
32,100
136,000
 
48
April
1,300
3,200
3,700
5,120
7,160
11,500
20,400
30,300
152,000
 
48
May
590
2,050
2,520
3,410
5,300
8,380
14,200
18,900
74,300
 
48
June
194
977
1,250
2,060
3,280
5,340
9,230
13,500
296,000
 
47
July
20.0
409
610
1,100
2,160
3,370
5,500
9,150
41,300
 
47
August
20.0
121
259
775
1,650
3,200
6,480
12,800
195,000
 
47
September
10.0
46.0
112
570
1,280
2,520
5,720
10,400
125,000
 
47
October
10.0
86.5
245
850
1,500
3,380
8,120
15,400
152,000
 
48
November
174
509
775
1,290
2,250
4,880
9,580
14,100
54,000
 
48
December
123
731
1,100
2,140
4,420
7,520
13,400
19,900
116,000
 
48
 
       
Instantaneous minimum flow for period of record = 10.0 cubic feet per second.

The current daily value for 08/28/2008 is 1370 cubic feet per second.

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

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