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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-Day Average Streamflow
 
01669520 DRAGON SWAMP AT MASCOT, VA
LOCATION.--Latitude 37°38'01", Longitude 76°41'48", North American Datum of 1927,
                    King and Queen County, VA, Hydrologic Unit 02080102
DRAINAGE AREA.--109 square miles.
PERIOD OF RECORD.--August 1981 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 01669520 plot. DRAGON SWAMP AT MASCOT, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 03/22/2017 is 186.86 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


                01669520     DRAGON SWAMP AT MASCOT, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
28.9
42.2
53.7
80.9
121
187
255
341
569
 
34
February
25.4
50.7
58.9
92.3
148
209
291
349
1,360
 
34
March
23.4
48.6
65.2
106
166
245
362
445
1,160
 
34
April
12.0
50.2
60.6
100
144
228
339
442
1,120
 
34
May
4.47
20.7
36.8
64.3
108
158
220
279
778
 
34
June
0.48
4.19
7.42
26.4
59.4
103
162
264
847
 
34
July
0.00
0.81
2.76
7.65
28.9
81.6
154
196
1,480
 
34
August
0.00
0.36
1.22
6.59
29.2
92.6
188
349
1,300
 
34
September
0.00
0.40
1.09
5.08
15.0
63.0
222
462
2,650
 
35
October
0.39
1.32
4.51
12.4
30.4
92.5
164
279
1,040
 
34
November
0.63
14.7
20.9
36.3
65.0
128
218
289
975
 
34
December
17.1
32.0
40.3
63.2
103
152
255
322
726
 
34
 
       

The current 7-day running-average value for 03/22/2017 is 186.86 cubic feet per second.

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

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