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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
01638420 NORTH FORK CATOCTIN CREEK AT ROUTE 681 NEAR WATERFORD, VA
LOCATION.--Latitude 3912'18.0", Longitude 7737'26.0", 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 Daily 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 daily value for 02/25/2017 is 8.5 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily


      Duration Table of Daily 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
1.50
2.50
3.10
8.50
21.0
30.2
48.5
70.2
780
 
14
February
2.10
2.58
6.32
12.0
22.0
35.0
60.8
83.0
418
 
14
March
2.00
4.85
8.10
17.0
31.0
51.0
91.0
142
513
 
14
April
3.90
7.31
9.41
15.0
26.0
41.0
69.0
95.0
605
 
14
May
3.50
5.98
7.40
11.0
19.0
37.0
74.5
109
1,190
 
14
June
1.50
3.00
3.70
6.50
13.0
26.0
63.9
88.7
587
 
14
July
0.12
0.76
1.20
2.70
6.25
10.0
16.3
23.6
429
 
14
August
0.00
0.00
0.33
0.94
2.40
4.15
7.90
12.0
61.0
 
15
September
0.00
0.00
0.00
0.59
1.70
4.60
13.9
33.9
933
 
15
October
0.00
0.00
0.69
1.70
4.75
12.0
25.0
41.5
921
 
14
November
0.58
1.00
1.40
4.12
9.65
23.0
39.8
59.7
325
 
14
December
1.30
2.18
2.90
9.18
19.5
33.0
54.5
81.2
897
 
14
 
       
Instantaneous minimum flow for period of record = 0.00 cubic feet per second.
Flow values of 0.00 are plotted as 0.01

The current daily value for 02/25/2017 is 8.5 cubic feet per second.

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

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