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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-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 2015.
REGULATION.--No known regulation.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01673800 plot. PO RIVER NEAR SPOTSYLVANIA, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 03/22/2017 is 93.14 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of 7-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
6.36
15.9
21.7
39.6
75.6
127
217
311
865
 
53
February
6.14
22.7
30.4
48.3
79.6
133
232
354
1,310
 
53
March
5.83
31.3
39.1
57.6
93.7
166
273
404
1,360
 
53
April
11.3
27.7
33.4
47.0
77.0
136
268
353
1,360
 
53
May
4.23
14.3
18.3
29.0
48.6
93.0
183
268
1,170
 
53
June
0.87
4.11
6.42
12.0
26.4
49.6
110
196
1,900
 
53
July
0.06
1.19
2.10
4.60
11.4
27.7
57.9
91.5
515
 
53
August
0.00
0.46
0.90
2.60
7.41
22.0
57.9
91.5
834
 
53
September
0.05
0.31
0.56
1.31
5.17
14.8
50.3
118
1,030
 
53
October
0.06
0.21
0.69
3.41
10.4
33.5
101
195
968
 
52
November
0.19
2.54
5.92
12.4
26.9
69.7
139
241
1,150
 
53
December
1.72
9.83
12.8
28.6
57.7
109
198
292
1,180
 
53
 
       

The current 7-day running-average value for 03/22/2017 is 93.14 cubic feet per second.

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

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