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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-Day Average Streamflow
 
01638350 SOUTH FORK CATOCTIN CREEK AT ROUTE 698 NEAR WATERFORD, VA
LOCATION.--Latitude 39°11'28.0", Longitude 77°36'55.6", North American Datum of 1983,
                    Loudoun County, VA, Hydrologic Unit 02070008.
DRAINAGE AREA.--31.6 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 01638350 plot. SOUTH FORK CATOCTIN CREEK AT ROUTE 698 NEAR WATERFORD, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 03/22/2017 is 35.57 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


                01638350     SOUTH FORK CATOCTIN CREEK AT ROUTE 698 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
3.57
4.34
6.00
18.3
33.1
52.5
79.8
164
308
 
14
February
4.66
6.85
12.6
19.0
30.6
44.7
89.9
139
358
 
14
March
4.46
9.75
11.4
22.1
38.6
81.4
137
178
300
 
14
April
9.47
11.3
13.4
21.1
33.2
61.4
107
178
258
 
14
May
7.10
8.46
9.61
15.5
30.4
57.8
138
246
406
 
14
June
3.14
6.03
7.09
11.0
23.1
47.4
112
146
197
 
14
July
1.16
2.14
2.91
5.30
9.60
15.8
30.0
42.4
177
 
14
August
0.32
0.81
1.12
2.03
3.99
7.77
18.5
28.7
41.9
 
15
September
0.01
0.23
0.47
1.45
4.73
12.8
36.9
73.5
370
 
15
October
0.00
0.00
2.10
4.93
11.5
23.6
48.5
79.7
367
 
14
November
1.21
2.97
3.97
7.28
18.9
36.4
77.6
95.0
401
 
14
December
1.61
4.97
6.81
18.8
37.8
59.5
96.9
131
308
 
14
 
       

The current 7-day running-average value for 03/22/2017 is 35.57 cubic feet per second.

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

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