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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-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 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01673800 plot. PO RIVER NEAR SPOTSYLVANIA, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/22/2017 is 43.75 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


                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
6.49
14.6
26.0
47.8
89.0
135
178
219
354
 
53
February
9.05
25.4
35.6
55.2
99.2
144
198
262
692
 
53
March
8.84
35.6
50.0
70.9
107
157
274
365
594
 
53
April
19.5
31.5
41.8
67.3
112
164
257
352
514
 
53
May
8.02
25.3
31.9
46.4
74.4
121
208
253
433
 
53
June
1.54
7.86
12.8
25.4
42.1
78.3
141
219
520
 
53
July
0.09
2.84
4.23
8.41
19.5
37.4
75.3
118
594
 
53
August
0.02
0.72
2.01
4.65
15.3
29.7
66.7
92.8
231
 
53
September
0.12
0.65
1.05
2.05
8.60
24.6
55.3
80.4
279
 
53
October
0.07
0.32
0.87
2.99
14.0
37.3
89.9
162
325
 
52
November
0.26
1.58
6.40
12.0
24.3
74.7
139
177
307
 
53
December
0.96
9.18
16.0
31.2
57.6
111
200
240
401
 
53
 
       

The current 28-day running-average value for 03/22/2017 is 43.75 cubic feet per second.

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

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