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Period of Record Monthly Statistics for 312308092395401 - R-1156
Annual monthly statistics of approved data for all data types.
Report date: 3/24/2019 10:37:59 AM

Note: Monthly medians are calculated for months having 10 or more month/years of data

Tip: Click the median value to view its component water-levels.

This table is sorted by 1) Month and 2) Median Value (ascending)
#     MonthYearMedian# of values
 1     Jan1998 6.05 1
 2     Jan1993 8.20 1
 3     Jan1983 8.50 1
 4     Jan1991 9.00 1
 5     Jan1988 9.05 1
 6     Jan1997 10.21 1
 7     Jan1999 10.42 1
 8     Jan1994 11.55 1
 9     Jan1987 12.6 1
10    Jan1990 13.90 1
11    Jan1980 14.80 1
12    Jan1984 15.20 1
13    Jan1982 18.30 1
14    Jan1981 18.50 1
Jan Median = 10.99      14 month-years    

 1     Feb1992 7.25 1
 2     Feb1993 8.50 1
 3     Feb1991 8.60 1
 4     Feb1988 9.50 1
 5     Feb1990 10.05 1
 6     Feb1994 10.15 1
 7     Feb1983 11.00 1
 8     Feb1996 12.10 1
 9     Feb1987 12.7 1
10    Feb1979 13.00 1
11    Feb1980 13.10 1
12    Feb1984 15.70 1
13    Feb2000 15.70 1
14    Feb1982 17.30 1
15    Feb1981 19.40 1
Feb Median = 12.1      15 month-years    

 1     Mar1992 6.73 2
 2     Mar1993 7.21 2
 3     Mar1994 7.60 1
 4     Mar1991 8.10 1
 5     Mar1990 8.40 1
 6     Mar1989 9.30 1
 7     Mar1983 9.80 1
 8     Mar1987 10.0 1
 9     Mar1988 10.05 1
10    Mar1979 11.30 1
11    Mar1984 12.30 1
12    Mar1980 12.40 1
13    Mar1982 15.70 1
14    Mar1981 17.80 1
Mar Median = 9.9      14 month-years    

 1     Apr1990 5.02 2
 2     Apr1997 5.67 1
 3     Apr1993 6.84 1
 4     Apr1999 8.95 1
 5     Apr1998 9.15 1
 6     Apr1995 9.35 1
 7     Apr1988 9.45 1
 8     Apr1994 9.65 1
 9     Apr1991 9.70 1
10    Apr1979 9.80 1
11    Apr1987 10.45 2
12    Apr1984 10.90 1
13    Apr1983 11.40 1
14    Apr1996 11.72 1
15    Apr1980 12.20 1
16    Apr2000 13.40 1
17    Apr1978 15.48 1
18    Apr1982 16.50 1
19    Apr1981 18.30 1
Apr Median = 9.8      19 month-years    

 1     May1991 3.20 1
 2     May1990 3.90 2
 3     May1992 5.91 2
 4     May1993 7.88 1
 5     May1979 7.90 1
 6     May1980 11.00 1
 7     May1994 11.15 1
 8     May1988 11.60 1
 9     May1984 12.80 1
10    May1983 13.20 1
11    May1987 13.70 1
12    May1978 14.96 2
13    May1981 17.10 1
14    May1982 17.80 1
May Median = 11.4      14 month-years    

 1     Jun1991 5.65 1
 2     Jun1993 8.18 1
 3     Jun1979 8.20 1
 4     Jun1992 10.30 1
 5     Jun1980 11.70 1
 6     Jun1982 12.70 1
 7     Jun1994 13.30 1
 8     Jun1988 14.00 1
 9     Jun1984 14.70 1
10    Jun1978 15.80 1
11    Jun1987 16.00 1
12    Jun1981 16.20 1
Jun Median = 13.0      12 month-years    

 1     Jul1989 4.20 1
 2     Jul1990 6.40 1
 3     Jul1992 8.70 1
 4     Jul1991 9.28 2
 5     Jul1993 10.15 1
 6     Jul1979 10.30 1
 7     Jul1997 10.87 1
 8     Jul1982 11.00 1
 9     Jul1996 12.44 1
10    Jul1999 12.60 1
11    Jul1987 12.75 1
12    Jul2000 13.30 1
13    Jul1998 13.69 1
14    Jul1980 13.70 1
15    Jul1981 15.30 1
16    Jul1988 15.50 1
17    Jul1994 15.65 1
18    Jul1978 16.30 1
Jul Median = 12.5      18 month-years    

 1     Aug1989 6.65 1
 2     Aug1992 10.20 1
 3     Aug1990 10.75 1
 4     Aug1995 11.2 1
 5     Aug1993 12.01 1
 6     Aug1994 12.95 1
 7     Aug2018 13.49 1
 8     Aug1979 14.00 1
 9     Aug1982 14.00 1
10    Aug2013 14.57 1
11    Aug1983 14.70 1
12    Aug1987 15.75 1
13    Aug1988 16.25 1
14    Aug1980 17.30 1
15    Aug1981 18.30 1
16    Aug1978 19.00 1
Aug Median = 14.0      16 month-years    

 1     Sep1989 11.10 1
 2     Sep1991 11.75 1
 3     Sep1992 11.98 2
 4     Sep1990 12.50 1
 5     Sep1994 13.55 1
 6     Sep1993 14.35 1
 7     Sep1979 16.00 1
 8     Sep1986 16.51 1
 9     Sep1988 16.70 1
10    Sep1983 17.70 1
11    Sep1987 17.95 1
12    Sep1981 18.60 1
13    Sep1980 18.80 1
14    Sep1982 18.90 1
15    Sep1978 19.90 1
Sep Median = 16.51      15 month-years    

 1     Oct1991 12.10 1
 2     Oct1989 12.30 1
 3     Oct1996 12.71 1
 4     Oct1995 13.01 1
 5     Oct1990 13.25 2
 6     Oct1998 13.57 1
 7     Oct1997 13.59 1
 8     Oct1993 13.60 1
 9     Oct1979 15.90 1
10    Oct1999 17.10 1
11    Oct1981 17.80 1
12    Oct1980 18.70 1
13    Oct1987 18.70 1
14    Oct1982 18.90 1
15    Oct1983 19.20 1
16    Oct1978 20.20 1
Oct Median = 14.8      16 month-years    

 1     Nov1991 11.00 1
 2     Nov1992 13.00 1
 3     Nov1993 13.05 1
 4     Nov1989 13.30 1
 5     Nov1986 15.88 1
 6     Nov1979 17.20 1
 7     Nov1981 17.60 1
 8     Nov1980 18.90 1
 9     Nov1982 19.10 1
10    Nov1987 19.60 1
11    Nov1983 19.80 1
12    Nov1978 21.00 1
Nov Median = 17.4      12 month-years    

 1     Dec1991 8.05 2
 2     Dec1992 11.55 1
 3     Dec1994 11.85 1
 4     Dec1993 12.90 1
 5     Dec1990 13.30 1
 6     Dec1989 13.50 1
 7     Dec1982 13.90 1
 8     Dec1987 14.85 1
 9     Dec1988 15.70 1
10    Dec1979 16.00 2
11    Dec1983 17.00 1
12    Dec1981 17.60 1
13    Dec1980 18.90 1
14    Dec1978 19.50 1
Dec Median = 14.4      14 month-years    

Source: (dbo.sp_MonthYearStats20100317a) - SPC - 1 - lev_va - Comp date: 3/24/2019 10:38:15 AM - Ver: 05-47-0009
  • The data you have obtained are from an automated U.S. Geological Survey database and may be subject to revision. The data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its use.
  • Real time data are considered Provisional and have not been reviewed or edited unless otherwise indicated.
  • These data may be subject to significant change and are not citeable until reviewed and approved by the U.S. Geological Survey.
  • Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences.
  • Information concerning the accuracy and appropriate uses of these data may be obtained from the state contact for the office collecting the data.



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