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Virginia DEQ

Virginia Water Science Center

 
  Duration Plot and Table of Daily Streamflow
 
02070000 NORTH MAYO RIVER NEAR SPENCER, VA
LOCATION.--Latitude 3634'05", Longitude 7959'15", 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 Daily Streamflow Conditions
Provisional Data Subject to Revision
02070000 plot. 
NORTH MAYO RIVER NEAR SPENCER, VA
Provisional Data Subject to Revision

                    

The current daily value for 03/22/2017 is 68.0 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


                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
36.0
57.0
65.7
82.0
106
143
224
330
4,350
 
86
February
41.0
63.0
72.0
89.0
115
155
233
335
1,980
 
86
March
44.0
74.0
81.0
98.0
124
169
275
406
3,900
 
86
April
39.0
72.0
78.0
93.0
118
165
244
355
2,980
 
86
May
32.0
58.0
66.0
80.0
104
145
195
275
1,740
 
86
June
12.0
44.0
51.0
65.0
94.0
124
179
259
5,790
 
86
July
9.20
35.0
40.0
54.0
81.0
109
161
229
3,870
 
86
August
5.90
26.0
33.0
47.0
69.0
96.0
147
208
7,460
 
86
September
8.90
27.0
34.0
47.0
65.0
87.0
139
214
6,490
 
86
October
19.0
33.0
40.0
51.0
69.0
96.0
139
210
6,160
 
86
November
26.0
45.0
50.0
61.0
78.0
109
154
233
3,380
 
86
December
30.0
51.4
59.0
72.0
95.0
128
186
278
2,100
 
86
 
       
Instantaneous minimum flow for period of record = 5.60 cubic feet per second.

The current daily value for 03/22/2017 is 68.0 cubic feet per second.

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

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