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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
02056650 BACK CREEK NEAR DUNDEE, VA
LOCATION.--Latitude 37°13'39", Longitude 79°52'06", North American Datum of 1927,
                    Roanoke County, VA, Hydrologic Unit 03010101.
DRAINAGE AREA.--55.8 square miles.
PERIOD OF RECORD.--July 1974 to current year.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--Small diurnal fluctuation at low flow from wastewater treatment plant 0.3 mile upstream.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02056650 plot. BACK CREEK NEAR DUNDEE, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 03/22/2017 is 38.14 cubic feet per second.

  explanation   Percentile Description Duration Plot Description 28 Day 14 Day 7 Day Daily
      Duration Table of 14-Day Average Streamflow
            Flow values in cubic feet per second


                02056650     BACK CREEK NEAR DUNDEE, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
7.53
12.4
19.6
27.8
48.2
83.9
119
148
309
 
41
February
10.2
17.4
20.6
28.1
57.8
87.7
127
189
406
 
41
March
9.82
21.6
29.8
47.7
76.4
119
200
257
396
 
41
April
18.1
27.2
31.0
40.6
76.3
132
222
294
672
 
41
May
13.6
20.9
25.4
38.0
55.9
81.9
120
159
574
 
41
June
3.73
8.97
15.0
25.7
40.0
64.5
115
177
327
 
41
July
3.06
5.97
7.61
13.2
23.6
38.1
65.6
164
405
 
41
August
0.41
3.83
6.28
11.1
17.2
28.9
57.4
81.1
254
 
42
September
1.53
5.26
6.32
9.49
15.0
31.9
71.4
123
590
 
42
October
2.49
5.17
6.62
11.6
17.4
36.9
74.4
127
624
 
41
November
4.53
7.76
11.2
15.9
24.6
48.2
87.3
128
521
 
41
December
6.11
10.3
13.6
21.5
41.0
77.9
110
134
219
 
41
 
       

The current 14-day running-average value for 03/22/2017 is 38.14 cubic feet per second.

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

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