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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 28-Day Average Streamflow
 
01638480 CATOCTIN CREEK AT TAYLORSTOWN, VA
LOCATION.--Latitude 39°15'16", Longitude 77°34'36", North American Datum of 1927,
                    Loudoun County, VA, Hydrologic Unit 02070008.
DRAINAGE AREA.--89.5 mi2.
PERIOD OF RECORD.--August 1971 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 01638480 plot. CATOCTIN CREEK AT TAYLORSTOWN, VA
Provisional Data Subject to Revision

                    

The current 28-day running-average value for 03/22/2017 is 45.54 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


                01638480     CATOCTIN CREEK AT TAYLORSTOWN, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
3.86
11.9
19.6
45.3
106
162
251
295
535
 
44
February
10.5
26.0
35.5
62.5
109
171
281
375
576
 
44
March
11.7
39.1
55.9
75.3
139
224
348
409
629
 
44
April
30.3
41.8
54.2
96.0
153
226
360
437
550
 
44
May
26.0
35.9
40.4
58.0
97.9
196
309
430
588
 
44
June
6.45
18.9
26.2
40.3
72.4
133
233
397
742
 
44
July
1.15
7.65
13.3
23.4
40.5
73.6
125
223
810
 
44
August
0.46
2.89
4.86
9.55
20.1
33.7
51.7
82.8
207
 
44
September
0.97
1.63
3.82
7.65
13.3
28.7
74.0
201
352
 
45
October
0.19
2.03
4.11
8.68
17.6
52.4
206
337
474
 
44
November
2.12
5.46
10.2
14.3
32.6
85.9
153
206
435
 
44
December
3.89
9.96
14.5
33.0
73.0
139
237
288
447
 
44
 
       

The current 28-day running-average value for 03/22/2017 is 45.54 cubic feet per second.

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

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