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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
0163626650 MANASSAS RUN AT ROUTE 645 NEAR FRONT ROYAL, VA
LOCATION.--Latitude 38°56'03", Longitude 78°07'41", North American Datum of 1983,
                    Warren County, VA, Hydrologic Unit 02070007.
DRAINAGE AREA.--11.2 square miles.
PERIOD OF RECORD.--May 2002 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2008.
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 0163626650 plot. MANASSAS RUN AT ROUTE 645 NEAR FRONT ROYAL, VA
Provisional Data Subject to Revision

                    

The current daily value for 09/30/2009 is 2.2 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


                0163626650     MANASSAS RUN AT ROUTE 645 NEAR FRONT ROYAL, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
2.00
3.80
4.15
8.90
12.0
19.0
28.5
38.5
124
 
6
February
2.20
3.30
4.27
7.82
10.0
17.0
27.0
32.1
100
 
6
March
2.20
5.20
5.30
10.0
15.0
29.8
58.0
74.0
119
 
6
April
4.30
4.70
5.09
11.8
20.0
37.0
60.1
78.1
148
 
6
May
1.20
2.68
4.26
6.50
12.0
25.0
45.2
63.2
207
 
7
June
0.60
1.90
2.20
3.52
7.55
21.5
39.3
64.4
120
 
7
July
0.26
0.31
0.58
1.30
3.50
7.90
19.0
26.8
150
 
7
August
0.14
0.21
0.24
0.45
1.10
2.60
9.14
12.0
25.0
 
7
September
0.14
0.20
0.25
0.68
2.40
14.0
39.1
61.6
227
 
7
October
0.17
0.22
0.26
1.30
4.70
12.0
28.0
37.8
82.0
 
6
November
0.87
1.60
2.80
6.28
10.0
21.0
43.0
65.0
205
 
6
December
0.32
3.22
5.00
8.12
12.5
24.0
48.0
63.8
286
 
6
 
       
Instantaneous minimum flow for period of record = 0.13 cubic feet per second.

The current daily value for 09/30/2009 is 2.2 cubic feet per second.

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

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Page Last Modified: 5/22/2009