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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
01673800 PO RIVER NEAR SPOTSYLVANIA, VA
LOCATION.--Latitude 38°10'17", Longitude 77°35'42", North American Datum of 1927,
                    Spotsylvania County, VA, Hydrologic Unit 02080105.
DRAINAGE AREA.--77.6 square miles.
PERIOD OF RECORD.--October 1962 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007.
REGULATION.--No known regulation.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01673800 plot. PO RIVER NEAR SPOTSYLVANIA, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 08/27/2008 is 3.14 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of 14-Day Average Streamflow
            Flow values in cubic feet per second


                01673800     PO RIVER NEAR SPOTSYLVANIA, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
5.85
15.5
22.9
48.1
88.1
131
208
259
556
 
45
February
6.65
22.2
32.8
54.0
92.1
142
255
340
889
 
45
March
6.36
32.6
43.4
63.8
104
170
279
455
828
 
45
April
11.7
29.3
34.0
53.0
90.2
174
258
333
808
 
45
May
4.95
17.2
21.0
34.8
58.8
100
166
242
356
 
45
June
1.36
4.94
7.46
14.4
29.9
54.6
134
175
993
 
45
July
0.07
1.41
2.47
5.93
14.1
29.5
69.3
140
998
 
45
August
0.00
0.51
0.91
2.97
9.78
29.6
71.3
98.7
423
 
45
September
0.07
0.34
0.62
1.46
5.34
19.0
50.0
101
534
 
45
October
0.07
0.30
0.77
2.89
12.0
42.1
118
173
545
 
44
November
0.19
1.61
5.92
13.1
30.2
79.2
156
241
585
 
45
December
1.40
9.85
12.5
33.5
61.3
113
192
277
738
 
45
 
       

The current 14-day running-average value for 08/27/2008 is 3.14 cubic feet per second.

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

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