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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-Day Average Streamflow
 
02034000 RIVANNA RIVER AT PALMYRA, VA
LOCATION.--Latitude 37°51'28", Longitude 78°15'58", North American Datum of 1927,
                    Fluvanna County, VA, Hydrologic Unit 02080204.
DRAINAGE AREA.--663 square miles.
PERIOD OF RECORD.--October 1933 to current year. Monthly discharge only for some periods, published in WSP 1303.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--Diurnal fluctuation caused by reservoir operation. Diversion estimated 1.3 cfs.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02034000 plot. RIVANNA RIVER AT PALMYRA, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/21/2017 is 137.29 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


                02034000     RIVANNA RIVER AT PALMYRA, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
88.4
170
243
466
723
1,100
1,570
1,900
2,840
 
81
February
88.7
264
328
512
830
1,240
1,690
2,110
4,230
 
81
March
101
352
462
651
956
1,340
1,920
2,440
3,680
 
81
April
197
348
447
649
935
1,420
2,040
2,430
3,880
 
81
May
184
289
339
473
698
1,090
1,630
2,130
3,980
 
81
June
77.0
179
233
336
557
823
1,240
1,790
4,700
 
81
July
38.6
90.6
117
205
325
524
821
1,250
5,020
 
81
August
19.4
53.0
70.9
147
257
470
860
1,230
3,880
 
81
September
11.6
44.2
64.1
118
216
475
950
2,040
3,600
 
81
October
15.2
49.4
65.0
125
228
606
1,290
2,360
3,970
 
80
November
48.1
93.8
128
193
318
682
1,160
1,650
3,910
 
81
December
65.8
135
187
330
572
936
1,540
1,810
3,650
 
81
 
       

The current 28-day running-average value for 03/21/2017 is 137.29 cubic feet per second.

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

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