Monthly/Annual Summaries of Depth to Ground Water for Wells With 20 or more Years of Record
Depth to Ground Water
Monthly/Annual Summaries of Depth to Ground Water (in feet) for Wells With 20 or more Years of Record
- POR = Period of Record
- MIN = minimum value for the period of record
- QTILE = 25th or 75th percentile value for the period of record
- MED = median value for the period of record
- AVG = mean value for the period of record
- MAX = maximum value for the period of record
Statistics of ground-water levels from well Db24-18 (permit 96246). Monthly and annual means
reported on 07-APR-08
YR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC AVG
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
1957 13.93 14.21 14.07
1958 9.58 5.08 4.88 9.91 10.83 8.98
1959 11.75 11.14 12.31 13.25 12.11
1960 8.38 11.30 9.84
1961 6.79 13.26 10.03
1962 13.87 11.46 13.15 13.67 14.42 14.71 13.71
1963 14.82 13.78 13.29 13.62 14.14 14.62 15.14 15.72 16.13 16.66 14.79
1964 16.31 15.15 13.59 11.62 10.01 10.74 12.15 13.13 14.15 14.84 15.88 13.13
1965 15.80 15.10 14.24 12.60 12.97 14.09 14.96 15.63 16.17 16.65 14.83
1966 17.37 17.43 16.87 16.37 15.72 15.66 16.37 16.35 15.38 15.24 16.28
1967 14.45 11.69 8.79 9.00 9.68 10.75 8.97 10.02 10.62 10.82
1968 9.15 7.71 8.56 8.89 9.97 10.91 12.72 13.93 10.23
1969 14.21 14.18 13.61 13.63 13.93 14.58 14.70 14.56 14.96 14.85 14.31
1970 12.86 11.46 7.62 8.73 9.42 10.68 12.32 13.62 10.91
1971 13.42 12.76 10.34 10.30 10.45 10.92 12.00 8.17 6.38 10.53
1972 6.72 6.22 5.92 6.26 6.12 6.69 6.70 9.70 11.01 12.00 9.99 7.94
1973 7.01 5.85 6.60 5.76 5.77 5.40 6.93 8.10 9.64 11.05 12.11 12.86 8.09
1974 10.62 9.44 9.61 7.29 8.54 10.20 11.42 12.66 12.97 10.57
1975 10.52 8.97 7.29 7.05 7.19 10.03 9.77 10.21 10.30 8.85
1976 9.35 8.40 9.06 9.73 11.00 12.01 13.41 12.94 13.32 11.02
1977 13.80 14.23 14.09 13.94 14.17 13.68 14.20 15.21 14.41 14.14
1978 9.03 5.95 7.08 7.18 8.20 7.39 7.47
1979 8.94 5.15 5.79 7.55 10.03 9.55 8.25
1980 9.38 9.70 6.93 7.70 10.58 12.10 12.90 13.90 14.60 10.87
1981 15.10 15.60 15.45 15.10 15.50 14.00 13.98 14.15 14.73 15.15 14.91
1982 13.60 12.70 10.92 9.55 9.55 10.03 11.09 12.60 13.00 13.48 13.47 11.81
1983 12.48 9.44 5.59 5.07 7.37 9.78 11.73 12.91 9.15 9.27
1984 9.40 7.69 5.52 6.00 7.60 7.53 8.86 10.46 11.62 8.53
1985 12.53 12.59 11.92 12.67 12.90 13.52 13.80 14.20 14.65 14.92 15.25 13.52
1986 14.49 12.44 11.76 12.27 13.09 14.21 14.99 15.51 15.74 14.97 14.11
1987 12.58 11.37 10.65 10.96 10.89 11.64 12.99 13.85 14.32 14.80 15.12 12.37
1988 14.45 12.59 12.29 12.10 12.15 13.16 14.47 14.88 14.90 13.50
1989 14.39 13.71 12.12 11.11 9.67 9.23 7.37 9.92 9.86 10.84 11.04
1990 11.61 9.66 10.96 10.01 10.08 9.97 11.02 12.62 13.51 14.05 11.32
1991 13.77 11.71 11.08 10.72 12.00 13.15 13.96 14.43 15.15 15.18 13.13
1992 15.20 15.34 14.32 13.81 13.87 14.47 14.96 15.40 15.28 14.72
1993 13.40 10.50 7.42 9.14 10.23 11.88 13.79 14.40 12.69 11.62
1994 11.57 10.03 7.82 8.07 8.93 10.35 11.44 12.27 13.39 14.19 10.99
1995 14.07 13.64 12.77 12.78 13.43 14.09 14.45 14.95 15.33 14.59 14.08
1996 12.69 11.33 10.79 8.95 9.52 9.83 10.23 11.38 11.05 10.61 10.77
1997 8.86 9.45 8.92 10.29 11.74 12.86 13.52 14.36 14.75 11.11
1998 14.70 12.76 10.50 10.96 10.66 11.78 13.55 14.57 15.14 12.89
1999 15.95 15.66 13.87 13.54 13.86 14.27 14.86 14.78 14.52 14.82 14.65
2000 14.41 14.17 13.17 10.44 10.53 11.89 12.14 12.87 13.70 13.95 14.38 14.95 13.15
2001 15.05 14.14 13.54 11.76 11.94 11.71 11.67 13.38 14.04 14.78 15.53 13.27
2002 16.02 16.23 16.40 16.18 16.00 15.92 15.85 16.37 16.56 16.83 16.55 15.33 16.22
2003 13.17 12.56 10.27 8.80 8.19 7.74 7.84 9.02 9.43 9.23 8.96 8.08 9.41
2004 8.18 8.81 9.36 8.67 8.54 8.57 8.31 8.02 9.19 8.82 9.47 8.59 8.71
2005 8.66 8.77 8.76 7.54 8.94 10.09 11.11 12.09 13.00 13.62 13.80 13.87 10.89
2006 12.93 11.75 11.51 11.36 11.60 12.22 12.46 12.64 12.89 12.95 11.96 11.32 12.13
2007 11.26 11.59 10.69 9.66 9.39 10.49 11.41 12.44 13.23 14.27 14.67 14.94 11.55
2008 14.54 13.68 12.69 13.65
Monthly minimums, quartiles, averages, and maximums, and period of record values
MIN JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
minimum 6.72 5.85 5.15 5.08 4.71 5.40 6.70 7.37 8.62 8.17 8.69 6.38 4.71
QTILE JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
25th 8.84 8.86 9.29 8.27 8.47 8.40 8.30 8.88 9.51 9.38 9.56 8.71 8.87
MED JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
median 11.54 11.56 10.29 8.99 9.02 10.05 10.99 11.65 12.68 13.49 13.72 12.54 11.06
AVG JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
average 11.40 11.03 10.33 9.44 9.51 10.08 10.43 10.88 11.62 12.61 12.82 12.01 11.04
QTILE JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
75th 13.19 12.38 11.44 11.01 10.47 11.80 12.19 12.49 13.06 14.36 14.78 14.77 12.85
MAX JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
maximum 17.37 17.43 16.87 16.37 16.00 15.92 15.91 16.47 16.56 16.89 16.85 16.65 17.43
****************************
Statistics of ground-water levels from well Hb14-12 (permit 211615). Monthly and annual means
YR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC AVG
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
1957 9.04 8.90 8.97
1958 4.46 1.49 2.16 6.04 6.78 6.54 5.23
1959 6.69 6.47 6.91 9.13 9.64 7.77
1960 6.24 6.24
1961 3.47 8.19 5.83
1962 8.10 8.84 9.33 9.58 9.74 9.12
1963 9.06 4.35 7.67 8.07 8.38 8.85 9.31 9.82 10.17 10.25 8.59
1964 8.65 7.86 5.77 5.11 4.98 6.68 8.00 8.60 9.37 9.79 10.16 7.50
1965 9.84 8.20 7.48 8.10 9.33 9.95 10.46 10.86 11.07 9.48
1966 11.40 11.59 11.02 11.14 11.92 11.63 11.95 11.94 11.85 11.03 11.15 11.51
1967 10.69 9.56 7.66 7.51 8.16 8.90 9.26 9.12 8.89
1968 7.53 5.81 6.65 6.31 7.11 7.98 8.93 9.87 10.04 8.03
1969 10.21 9.69 8.90 8.84 9.12 9.68 7.44 8.24 8.54 8.29 9.01
1970 6.18 6.11 4.09 5.67 5.89 7.09 8.37 9.25 6.53
1971 8.69 8.14 6.53 6.71 7.03 7.16 8.09 4.17 3.15 6.63
1972 3.71 3.26 3.17 3.94 3.80 4.97 3.20 6.30 7.00 6.78 4.24 4.58
1973 3.22 1.69 3.00 1.54 3.72 3.84 5.61 6.39 7.25 8.06 8.53 8.72 5.13
1974 7.22 6.64 6.89 5.07 6.10 6.53 7.49 7.35 7.41 6.81
1975 5.85 5.28 4.37 4.25 4.64 5.03 6.55 5.69 5.54 6.08 5.26
1976 4.75 4.19 5.63 6.51 7.36 8.15 9.03 9.02 9.22 7.10
1977 9.28 9.36 8.51 8.71 9.40 10.01 9.11 10.37 9.39 9.35
1978 5.56 3.43 3.32 5.13 6.18 7.26 6.97 7.80 5.69
1979 4.67 2.66 3.80 5.10 6.12 6.03 5.64 4.76 5.85 4.96
1980 5.80 6.27 3.13 4.24 5.02 5.87 6.32 7.46 8.01 8.71 6.06
1981 9.14 8.79 8.97 8.69 8.75 8.98 9.44 9.80 10.09 10.35 10.53 9.41
1982 10.16 9.28 7.82 5.84 6.50 5.67 6.14 7.44 8.54 9.09 9.21 8.54 7.75
1983 8.33 7.29 4.94 2.85 2.74 3.08 4.96 6.65 7.70 8.40 8.18 5.38 5.56
1984 5.71 5.18 4.20 2.71 3.56 5.00 5.37 6.58 7.68 8.12 8.37 8.00 5.50
1985 8.23 7.68 7.59 7.77 7.08 7.31 7.33 8.20 8.60 7.89 8.08 7.74 7.75
1986 7.58 5.22 5.74 6.73 7.69 8.35 8.83 9.37 9.88 10.05 9.33 8.08
1987 6.56 5.62 4.31 5.24 5.78 6.67 7.30 8.67 8.99 9.66 10.21 10.40 7.47
1988 10.07 8.36 7.87 7.88 6.77 7.24 7.61 8.02 8.79 9.37 9.58 8.92 8.36
1989 8.54 7.83 5.92 4.53 2.48 3.03 2.03 2.38 4.55 4.23 4.30 5.20 4.49
1990 4.82 4.79 5.39 4.69 3.61 4.16 5.17 6.49 7.37 7.94 8.52 8.70 5.95
1991 6.54 6.38 6.22 5.56 6.05 6.43 7.88 8.41 8.90 9.48 9.88 10.02 7.64
1992 10.01 10.03 9.51 8.66 8.32 8.05 8.46 8.72 8.84 8.74 8.86 7.45 8.89
1993 6.50 6.01 3.14 2.35 4.04 5.46 6.84 8.00 9.13 9.68 9.87 6.01
1994 9.62 8.49 6.29 3.33 4.94 5.88 6.41 6.92 6.56 7.74 8.44 6.77
1995 7.99 7.58 6.66 7.18 7.82 8.43 9.28 9.08 8.50 8.31 8.10
1996 6.73 5.39 5.17 4.20 4.94 3.17 4.35 5.74 5.00 5.03
1997 3.29 3.17 2.94 4.16 6.02 7.37 8.62 9.41 9.15 6.00
1998 8.36 4.45 3.45 3.88 5.39 6.62 8.10 8.75 6.73
1999 9.53 8.84 7.81 8.06 8.81 9.96 9.71 8.25 8.03 7.85 8.85
2000 7.37 6.25 4.20 4.52 6.38 6.48 6.13 6.28 5.82 6.69 7.24 6.23
2001 7.35 5.39 3.84 4.19 5.83 5.68 6.58 7.27 8.04 8.71 9.21 9.77 6.82
2002 9.98 10.13 10.17 9.57 9.26 8.93 9.12 9.96 10.35 10.61 9.96 7.66 9.58
2003 5.45 3.96 3.12 3.12 4.69 1.45 3.00 5.00 4.88 5.64 4.62 3.48 4.03
2004 4.04 4.40 5.00 4.60 4.65 5.32 4.19 5.44 6.47 6.80 6.17 5.15 5.19
2005 5.41 4.50 4.37 2.65 5.14 5.95 6.15 7.00 7.50 8.11 8.14 7.73 7.69
2006 6.39 6.04 6.11 6.72 7.06 7.56 5.58 6.16 6.88 7.06 6.02 5.53 6.23
2007 4.36 5.21 4.37 3.35 4.78 6.08 6.80 8.85 6.49 9.15 8.90 8.83 5.98
2008 9.25 8.34 7.12 9.07
Monthly minimums, quartiles, averages, and maximums, and period of record values
MIN JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
minimum 3.22 1.69 2.01 1.30 1.65 1.45 2.03 1.76 3.54 4.16 3.97 3.15 1.30
QTILE JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
25th 4.75 5.22 4.43 3.11 4.24 5.67 5.47 6.13 6.79 7.04 6.99 5.82 5.38
MED JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
median 6.18 5.98 5.81 4.19 5.03 6.18 6.20 6.61 7.04 8.01 8.31 7.97 6.65
AVG JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
average 6.67 6.20 5.57 4.56 5.32 6.34 6.38 7.05 7.61 7.98 8.04 7.61 6.73
QTILE JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
75th 8.67 6.38 6.15 5.69 6.49 7.08 7.01 8.13 8.74 9.09 8.97 8.75 8.24
MAX JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
maximum 11.40 11.59 11.02 11.14 9.26 11.92 11.63 11.95 11.94 11.85 11.03 11.15 11.95
****************************
Statistics of ground-water levels from well Mc51-01 (permit 178923). Monthly and annual means
YR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC AVG
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
1958 6.02 10.85 8.44
1959 11.16 10.87 11.13 9.64 8.87 10.33
1960 7.29 9.16 10.70 9.05
1961 7.03 13.38 10.21
1962 12.97 13.45 14.04 14.52 13.75
1963 14.10 12.98 9.77 10.93 11.05 14.32 12.38 13.14 13.62 13.30 12.56
1964 10.98 8.12 6.61 7.22 8.48 10.22 12.86 13.54 14.12 14.55 14.73 10.83
1965 14.18 12.13 11.86 10.23 11.49 12.90 13.34 13.74 14.09 14.26 14.70 12.99
1966 14.94 13.76 12.97 11.15 12.57 14.00 12.82 13.30 13.12
1967 12.55 10.50 10.40 10.40 10.60 5.47 6.88 10.04 9.32 9.82
1968 8.82 7.74 9.69 10.51 10.73 11.60 12.68 13.90 14.57 14.95 11.43
1969 14.99 14.38 12.43 11.90 12.74 12.32 8.16 10.78 11.73 12.10 12.41
1970 10.02 10.31 8.04 10.34 9.65 12.20 13.50 13.71 13.54 11.16
1971 12.09 10.05 9.84 10.54 11.24 12.76 12.36 10.17 11.13
1972 9.44 9.34 8.06 9.73 9.06 9.79 8.02 12.02 12.93 12.30 10.08 10.02
1973 8.64 6.47 9.24 10.18 10.47 11.17 12.33 11.79 11.11 12.56 13.03 12.97 10.83
1974 10.80 10.64 11.14 9.83 10.01 11.27 10.62
1975 10.43 9.14 9.23 9.40 4.52 5.79 12.23 12.90 9.63
1976 10.62 10.74 12.06 12.98 14.05 14.65 15.18 14.14 13.58 13.11
1977 14.97 13.59 13.39 13.55 14.02 14.78 15.29 15.69 14.70 14.44
1978 6.88 10.26 6.93 8.81 11.23 12.38 13.29 14.23 14.62 10.96
1979 13.56 5.03 8.59 10.41 11.35 11.36 11.01 10.31 10.93 10.28
1980 11.01 10.45 10.09 11.95 12.50 13.26 13.83 14.57 14.12 12.42
1981 14.46 14.69 13.29 12.66 12.71 13.31 14.07 15.74 15.06 15.53 15.64 14.32
1982 14.55 12.16 11.96 12.03 12.76 13.29 14.02 15.08 14.39 13.36
1983 13.96 12.27 8.65 8.73 9.90 11.69 13.07 13.93 11.10 11.56
1984 10.40 8.94 5.07 4.28 8.56 11.21 12.69 13.64 14.24 9.89
1985 14.09 13.60 13.28 13.57 13.91 13.68 14.17 14.68 14.95 13.61 13.87 13.08 13.85
1986 13.53 11.32 10.73 12.12 13.68 13.90 15.04 15.70 16.00 13.71
1987 13.18 11.41 9.61 10.77 11.52 11.55 13.34 14.11 14.60 15.21 15.79 16.13 13.10
1988 16.29 14.85 13.55 12.98 12.50 12.94 13.50 13.48 14.02 14.52 14.96 14.00 13.93
1989 13.86 12.72 9.44 7.97 7.20 8.60 9.01 10.49 10.25 10.34 11.20 10.10
1990 11.18 11.20 11.74 10.45 9.11 8.66 10.48 11.47 12.24 13.54 14.16 14.61 11.57
1991 13.62 12.85 13.08 12.03 12.11 11.51 12.24 12.95 13.18 13.74 12.73
1992 13.39 13.28 12.65 12.66 12.99 13.47 14.00 14.23 13.93 13.78 13.79 13.47
1993 13.19 12.75 9.85 9.49 10.29 11.47 12.71 13.64 11.67
1994 9.36 13.28 6.29 7.91 10.20 11.89 12.56 13.10 13.52 13.88 10.90
1995 13.69 13.15 12.30 12.71 13.04 13.23 14.15 14.58 13.62 13.45
1996 12.38 9.53 10.25 8.61 9.53 10.57 11.31 12.63 11.64 12.34 11.04
1997 9.11 7.55 8.88 9.67 10.17 11.17 12.34 10.91 12.53 10.55 10.24
1998 9.15 4.43 5.68 10.37 11.50 13.27 14.22 14.65 15.10 10.82
1999 14.39 12.12 11.45 12.16 13.02 13.54 14.21 10.02 11.49 12.57
2000 12.25 12.42 11.98 9.81 10.81 11.89 12.53 12.65 13.17 11.52 13.35 13.69 12.13
2001 13.75 12.77 12.35 10.61 11.35 9.67 8.07 10.76 12.46 13.56 14.35 13.28
2002 14.96 15.32 15.49 14.83 13.87 14.08 14.55 15.10 14.80 14.06 11.36 9.94 14.04
2003 10.03 10.68 6.87 7.85 9.66 7.32 8.56 11.25 11.84 11.44 10.65 8.86 9.58
2004 9.44 10.44 11.69 11.11 11.06 12.44 13.39 14.07 14.62 15.08 15.12 14.39 12.73
2005 13.76 13.21 12.33 10.85 11.70 12.01 11.66 12.21
Monthly minimums, quartiles, averages, and maximums, and period of record values
MIN JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
minimum 6.88 4.43 5.03 5.07 4.28 6.13 4.52 5.47 6.02 10.02 8.87 6.70 4.28
QTILE JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
25th 9.92 10.77 9.85 9.29 10.10 10.35 10.69 11.77 12.29 12.07 10.86 9.89 10.50
MED JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
median 13.01 12.59 11.86 10.69 11.47 12.05 12.50 13.95 14.46 13.29 13.23 13.69 12.36
AVG JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
average 12.09 12.27 11.41 10.93 11.35 11.48 12.05 13.21 13.46 13.28 12.77 12.15 12.16
QTILE JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
75th 14.06 13.79 12.81 12.44 12.15 12.94 13.69 14.79 14.73 14.81 14.22 14.39 14.17
MAX JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
maximum 16.29 15.43 15.57 15.25 14.51 14.31 14.79 15.40 15.74 15.70 15.79 16.13 16.29
****************************
Statistics of ground-water levels from well Qe44-01 (permit 49320). Monthly and annual means
YR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC AVG
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
1959 10.52 9.98 10.25
1960 7.06 8.29 8.82 8.06
1961 6.48 6.90 7.00 10.37 7.55
1962 11.29 11.99 12.18 11.32 11.70
1963 7.12 7.02 4.99 7.47 7.89 7.13 10.64 11.47 11.32 10.49 8.55
1964 5.58 5.33 5.07 5.36 6.79 9.37 11.57 12.18 11.14 10.75 10.39 8.36
1965 9.05 6.83 7.38 6.81 9.04 9.09 8.26 9.64 10.30 10.62 11.09 8.92
1966 11.12 7.32 7.11 6.97 10.24 11.68 11.52 10.97 11.04 9.77
1967 8.66 6.43 7.54 6.76 9.22 8.74 7.28 8.30 6.35 7.66
1968 6.78 5.54 7.09 7.67 6.56 8.09 9.91 11.59 11.75 11.36 8.63
1969 10.88 7.55 6.46 7.10 9.39 9.09 5.80 9.26 9.95 7.05 8.35
1970 5.66 6.29 5.24 10.82 11.38 8.86 7.79
1971 5.82 5.52 6.05 6.96 6.53 7.30 9.67 5.28 6.28 6.60
1972 6.86 5.72 5.74 6.04 5.36 6.43 6.16 8.83 7.61 5.49 5.50 6.34
1973 5.70 4.92 6.02 5.69 6.60 8.26 8.94 9.76 7.34 9.06 9.30 6.55 7.35
1974 5.52 6.22 6.99 6.55 5.91 9.29 7.74 8.44 9.14 6.42 7.22
1975 5.43 5.20 5.39 6.18 7.05 6.05 6.90 6.34 7.01 6.24
1976 5.87 6.90 7.25 8.40 10.03 10.47 11.22 7.12 9.26 8.50
1977 6.92 7.41 6.93 7.97 9.16 11.16 11.06 9.54 7.87 8.67
1978 5.19 6.34 5.96 5.84 9.57 8.03 10.60 11.06 7.81 7.82
1979 4.98 5.69 5.93 8.33 8.82 5.93 5.29 6.38 6.42
1980 7.01 5.61 6.17 9.31 10.63 11.71 9.35 8.54
1981 10.00 8.16 7.85 7.48 8.21 10.20 10.43 11.63 11.93 11.81 9.85
1982 7.65 6.97 6.95 8.60 9.25 10.01 9.88 10.98 10.84 8.58 7.29 8.73
1983 6.78 6.13 5.50 6.88 7.50 8.79 8.88 9.81 8.03 7.20 6.06 7.32
1984 6.04 5.73 4.98 5.80 6.91 8.10 8.85 10.84 10.99 10.04 9.19 7.99
1985 8.56 6.93 7.56 8.31 9.92 10.51 11.29 6.68 7.63 6.87 8.01 7.53 8.31
1986 6.86 6.16 7.33 9.07 10.67 11.47 11.33 11.20 11.93 11.84 10.64 9.98
1987 6.75 5.68 5.78 6.55 6.50 8.16 10.36 11.00 11.44 11.79 11.11 10.07 8.63
1988 7.98 5.98 6.73 7.07 7.58 9.74 10.65 11.24 11.86 11.80 11.16 10.33 9.36
1989 10.22 8.76 6.11 6.06 6.40 7.07 5.82 6.02 7.08 7.25 6.43 6.97 7.02
1990 6.68 6.92 7.56 6.98 6.09 7.79 9.19 8.61 9.53 9.86 10.21 9.69 8.23
1991 6.79 7.55 6.45 6.90 8.58 9.90 9.84 10.27 10.37 8.83 9.33 8.34
1992 7.35 7.11 6.25 7.94 8.30 8.33 9.67 6.20 8.55 8.14 7.66 6.92 7.79
1993 5.94 5.30 5.30 6.13 7.07 6.84 9.23 10.62 11.55 10.76 7.85 7.56
1994 3.66 6.19 5.24 7.79 7.37 10.02 8.42 7.24 9.12 7.52 7.19
1995 7.47 7.18 7.33 7.98 9.00 10.24 12.02 11.72 9.54 9.14
1996 7.51 6.31 7.38 6.68 7.63 9.08 8.18 7.30 7.49 7.34 7.55
1997 6.59 6.42 6.65 6.56 8.46 9.59 9.60 10.92 10.81 6.93 8.34
1998 5.83 5.40 6.20 7.02 8.34 8.90 12.00 12.37 12.29 12.46 8.80
1999 9.21 6.95 7.06 8.96 11.00 11.33 11.89 8.21 7.88 8.96
2000 7.62 7.14 8.58 6.70 7.85 9.53 8.60 7.97 6.66 7.90 9.13 7.64 7.92
2001 6.26 6.68 6.45 6.88 9.02 7.48 10.09 5.84 9.51 10.23 11.00 11.24 8.39
2002 10.79 10.15 10.24 7.57 7.50 9.73 11.05 12.98 9.53 7.77 6.85 6.25 9.60
2003 4.38 5.79 5.42 5.92 6.64 7.85 8.33 8.15 7.56 5.45 5.00 6.41
2004 6.50 6.40 7.45 6.61 7.70 9.26 11.04 9.37 9.15 9.58 8.89 7.39 8.76
2005 7.25 6.37 6.34 6.87 7.66 7.31 6.77 7.87 9.89 7.52 7.16 6.14 7.27
2006 5.98 6.53 7.91 8.82 9.50 10.13 9.41 11.01 8.88 7.67 6.01 6.39 8.20
2007 5.71 5.99 5.79 6.07 8.02 9.74 11.52 11.52 11.83 12.21 11.55 11.31 9.26
2008 9.87 7.85 6.94 9.61
Monthly minimums, quartiles, averages, and maximums, and period of record values
MIN JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
minimum 3.66 4.38 4.98 5.12 5.36 5.91 5.29 5.24 6.20 5.28 4.83 5.00 3.66
QTILE JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
25th 5.82 5.99 5.83 6.04 7.27 7.98 8.39 8.48 8.91 7.35 6.92 6.33 6.56
MED JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
median 6.51 6.30 6.43 6.70 8.11 9.25 9.92 10.24 9.61 9.52 8.33 7.01 8.06
AVG JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
average 6.98 6.45 6.62 6.96 8.01 8.91 9.59 9.81 9.93 9.35 8.63 7.95 8.33
QTILE JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
75th 7.75 6.70 7.38 7.63 8.60 10.04 11.04 11.16 11.24 11.54 10.79 10.15 9.87
MAX JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC POR
------- ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
maximum 11.89 10.15 10.24 9.15 10.04 11.00 12.22 13.11 12.44 12.67 12.29 12.46 13.11