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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-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 28-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01669520 plot. DRAGON SWAMP AT MASCOT, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/22/2017 is 97.61 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


                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
34.8
51.0
63.7
84.2
120
178
245
302
511
 
34
February
41.5
56.6
68.9
99.8
136
203
266
340
661
 
34
March
32.6
58.7
72.1
112
170
229
346
457
598
 
34
April
29.5
55.9
67.1
119
168
252
374
445
565
 
34
May
8.40
41.0
56.8
85.5
129
190
247
286
465
 
34
June
2.06
11.6
24.1
50.8
81.4
115
204
286
460
 
34
July
0.14
2.94
5.06
18.0
51.1
83.5
134
162
520
 
34
August
0.02
0.92
3.34
11.3
40.8
78.2
181
274
783
 
34
September
0.00
0.63
1.66
8.25
27.6
77.7
244
395
745
 
34
October
0.64
1.43
5.27
12.4
33.0
114
275
309
767
 
34
November
0.68
12.5
18.8
31.4
57.3
112
207
273
384
 
34
December
10.5
30.6
38.7
62.7
88.0
143
265
314
552
 
34
 
       

The current 28-day running-average value for 03/22/2017 is 97.61 cubic feet per second.

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

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