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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
02056650 BACK CREEK NEAR DUNDEE, VA
LOCATION.--Latitude 3713'39", Longitude 7952'06", 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 Daily Streamflow Conditions
Provisional Data Subject to Revision
02056650 plot. 
BACK CREEK NEAR DUNDEE, VA
Provisional Data Subject to Revision

                    

The current daily value for 02/23/2017 is 42.0 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


                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
6.40
13.0
17.0
24.0
43.0
68.0
126
194
1,560
 
41
February
8.40
16.0
18.0
30.0
51.0
80.0
140
201
1,790
 
41
March
8.10
23.0
28.0
42.0
68.0
107
182
291
1,330
 
41
April
14.0
23.0
28.0
37.0
62.0
102
169
255
2,580
 
41
May
10.0
16.0
20.0
31.0
48.0
71.0
110
170
1,080
 
41
June
2.20
6.56
9.70
20.0
32.0
50.0
94.9
159
1,490
 
41
July
1.80
4.60
5.80
11.0
19.0
31.0
59.0
90.8
2,020
 
42
August
0.11
2.30
4.43
8.70
14.0
23.0
46.0
73.8
2,050
 
42
September
0.93
3.60
5.00
7.40
13.0
25.0
58.9
123
3,950
 
42
October
2.20
4.40
5.80
10.0
16.0
31.0
61.8
97.4
1,530
 
41
November
4.20
7.50
9.80
14.0
23.0
46.2
86.0
130
4,000
 
41
December
3.70
9.76
13.0
20.0
37.0
61.0
101
142
727
 
41
 
       
Instantaneous minimum flow for period of record = 0.04 cubic feet per second.

The current daily value for 02/23/2017 is 42.0 cubic feet per second.

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

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