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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-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 7-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 7-day running-average value for 03/22/2017 is 22.94 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


                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
1.60
2.78
3.19
8.98
23.9
35.1
51.9
97.3
174
 
14
February
2.29
2.70
7.59
13.7
21.4
35.0
63.4
103
218
 
14
March
2.19
5.28
6.43
17.9
33.9
62.3
106
127
229
 
14
April
5.09
7.43
10.3
16.3
26.9
46.2
83.6
124
182
 
14
May
4.36
7.18
8.36
11.9
22.7
45.2
96.6
150
295
 
14
June
1.74
3.46
4.33
7.39
14.8
31.5
59.5
93.1
137
 
14
July
0.33
1.07
1.43
3.11
7.11
11.5
21.8
27.3
116
 
14
August
0.00
0.09
0.56
1.17
2.89
5.01
8.99
11.9
19.9
 
15
September
0.00
0.00
0.02
0.75
2.05
5.76
16.9
36.7
189
 
15
October
0.00
0.00
0.92
2.06
6.32
13.4
24.3
40.6
210
 
14
November
0.74
1.12
1.51
4.19
11.9
23.5
43.7
54.6
236
 
14
December
1.22
2.17
2.91
10.9
23.2
35.7
62.4
76.1
202
 
14
 
       

The current 7-day running-average value for 03/22/2017 is 22.94 cubic feet per second.

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

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