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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of 14-Day Average Streamflow
 
02070000 NORTH MAYO RIVER NEAR SPENCER, VA
LOCATION.--Latitude 36°34'05", Longitude 79°59'15", North American Datum of 1927,
                    Henry County, VA, Hydrologic Unit 03010103.
DRAINAGE AREA.--108 square miles.
PERIOD OF RECORD.--October 1928 to current year. Monthly discharge only for some periods, published in WSP 1303.
DURATION STATISTIC COMPUTATION PERIOD.--All data through September 2015.
REGULATION.--No known regulation.
GAGE OPERATION.--Virginia Department of Environmental Quality - Water Division.
     Duration Plot with 14-Day Average Streamflow Conditions
Provisional Data Subject to Revision 02070000 plot. NORTH MAYO RIVER NEAR SPENCER, VA
Provisional Data Subject to Revision

                    

The current 14-day running-average value for 03/22/2017 is 70.5 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


                02070000     NORTH MAYO RIVER NEAR SPENCER, VA

   Minimum daily flow
   5th percentile
 
   10th percentile
 
   25th percentile
 
 
   Median
 
 
   75th percentile
 
 
 
   90th percentile
 
 
 
   95th percentile
 
 
 
 
   Maximum daily flow
         
Years of record
January
39.6
63.1
71.7
92.3
121
174
244
289
580
 
86
February
41.4
64.9
76.0
95.7
128
174
236
319
591
 
86
March
48.1
78.3
87.6
109
141
197
272
353
744
 
86
April
46.0
78.7
84.7
104
139
204
284
360
888
 
86
May
40.0
66.3
72.9
88.8
117
162
213
279
632
 
86
June
15.0
50.6
58.7
74.6
106
142
195
275
854
 
86
July
15.7
40.6
46.2
61.7
89.6
120
191
242
874
 
86
August
8.02
31.3
37.7
52.9
81.5
110
160
215
818
 
86
September
16.7
29.9
36.8
52.1
71.8
101
174
252
880
 
86
October
20.7
33.6
42.4
55.2
73.0
111
200
314
818
 
85
November
26.9
46.1
51.0
64.1
81.1
121
174
222
724
 
86
December
31.9
52.9
60.6
75.3
103
145
196
228
455
 
86
 
       

The current 14-day running-average value for 03/22/2017 is 70.5 cubic feet per second.

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

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