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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
01638420 NORTH FORK CATOCTIN CREEK AT ROUTE 681 NEAR WATERFORD, VA
LOCATION.--Latitude 39°12'18.0", Longitude 77°37'26.0", North American Datum of 1983,
                    Loudoun County, VA, Hydrologic Unit 02070008.
DRAINAGE AREA.--23.1 square miles.
PERIOD OF RECORD.--July 2001 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--No known regulation.
GAGE OPERATION.--U.S. Geological Survey, Virginia Water Science Center.
     Duration Plot with 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 01638420 plot. NORTH FORK CATOCTIN CREEK AT ROUTE 681 NEAR WATERFORD, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 03/22/2017 is 15.83 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of 14-Day Average Streamflow
            Flow values in cubic feet per second


                01638420     NORTH FORK CATOCTIN CREEK AT ROUTE 681 NEAR WATERFORD, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
1.84
2.58
3.07
12.7
26.3
35.1
57.4
77.2
104
 
14
February
2.31
2.90
7.94
14.2
22.1
38.1
68.5
98.7
130
 
14
March
2.28
4.91
5.95
18.4
35.8
63.0
102
112
148
 
14
April
5.48
8.27
11.3
14.6
30.0
51.8
84.0
102
140
 
14
May
5.30
8.41
9.25
13.0
23.7
51.4
113
149
204
 
14
June
2.91
4.49
5.58
8.52
19.6
34.6
65.2
84.1
129
 
14
July
0.62
1.41
1.95
3.53
8.25
14.7
26.4
38.7
72.6
 
14
August
0.00
0.52
0.79
1.53
3.20
5.74
8.97
11.7
17.5
 
14
September
0.00
0.02
0.08
0.97
2.29
8.07
14.7
22.1
111
 
15
October
0.00
0.00
1.16
2.42
7.02
10.9
29.5
34.8
113
 
14
November
0.98
1.18
1.88
4.86
11.0
21.8
39.3
59.9
129
 
14
December
1.31
2.34
3.06
11.9
22.4
40.1
52.6
63.7
130
 
14
 
       

The current 14-day running-average value for 03/22/2017 is 15.83 cubic feet per second.

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

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