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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 7-Day Average Streamflow
 
02017500 JOHNS CREEK AT NEW CASTLE, VA
LOCATION.--Latitude 37°30'22", Longitude 80°06'25", North American Datum of 1927,
                    Craig County, VA, Hydrologic Unit 02080201.
DRAINAGE AREA.--105 square miles.
PERIOD OF RECORD.--April 1926 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2007.
REGULATION.--No known regulation.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 7-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02017500 plot. JOHNS CREEK AT NEW CASTLE, VA
Provisional Data Subject to Revision

                    

The current 7-day running-average value for 10/14/2008 is 8.63 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


                02017500     JOHNS CREEK AT NEW CASTLE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
12.1
21.7
33.3
68.4
125
227
388
532
1,460
 
81
February
14.7
32.7
49.2
89.0
163
274
459
598
1,380
 
81
March
18.3
54.9
73.1
120
196
326
537
745
1,660
 
81
April
34.7
58.5
74.0
103
157
285
505
697
1,390
 
81
May
16.7
34.1
42.1
64.2
110
195
372
503
1,150
 
81
June
9.16
18.0
21.6
29.7
49.3
97.8
217
401
1,630
 
81
July
8.14
11.0
12.5
16.3
23.6
40.4
71.7
128
1,040
 
81
August
7.17
9.36
10.5
13.1
18.7
33.6
79.0
145
1,360
 
81
September
5.63
8.49
9.29
11.4
16.6
27.0
76.3
176
990
 
81
October
7.09
9.47
10.6
13.6
19.7
44.7
122
232
1,180
 
80
November
9.29
13.4
14.7
19.1
36.4
98.2
213
330
1,250
 
81
December
10.6
16.0
19.0
34.7
78.9
159
285
399
1,410
 
81
 
       

The current 7-day running-average value for 10/14/2008 is 8.63 cubic feet per second.

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

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