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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-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 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01638480 plot. CATOCTIN CREEK AT TAYLORSTOWN, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 03/22/2017 is 86.57 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


                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
2.93
12.6
16.1
41.3
86.1
149
274
381
1,020
 
44
February
9.36
23.1
33.6
59.6
90.9
143
281
461
1,150
 
44
March
9.01
35.5
47.1
69.6
123
238
390
528
1,150
 
44
April
22.4
36.7
46.6
69.2
111
208
347
509
976
 
44
May
15.6
25.8
31.6
43.6
73.9
148
311
467
1,420
 
44
June
2.69
11.9
16.6
29.6
51.5
98.5
174
316
2,260
 
44
July
0.25
3.81
7.21
14.8
27.9
47.1
80.7
142
1,300
 
44
August
0.10
1.91
2.94
7.04
14.0
25.1
52.0
84.8
677
 
44
September
0.27
1.26
2.11
5.67
10.5
25.2
86.7
191
1,080
 
45
October
0.12
1.85
3.73
8.42
17.2
50.2
141
275
1,260
 
44
November
1.73
6.14
8.84
15.9
34.7
80.0
145
215
1,190
 
44
December
2.64
8.91
13.7
31.8
75.3
149
281
401
1,060
 
44
 
       

The current 7-day running-average value for 03/22/2017 is 86.57 cubic feet per second.

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

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