Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Mean Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Mean Median Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Monthly Days 1937/38 [ ]M [ ]M [ ]M [ ]M [5.39] 5.89 6.08 6.21 6.41 6.65 6.57 6.20 [6.18] [6.20] 143 1938/39 5.67 6.05 5.96 6.31 7.83 9.35 9.15 8.92 8.85 8.78 8.73 8.69 7.86 8.71 0 1939/40 8.40 8.13 7.78 7.48 7.10 7.51 7.76 8.09 8.04 7.68 7.11 6.38 7.62 7.72 0 1940/41 6.73 6.43 6.79 7.71 8.79 9.31 8.91 8.49 8.01 7.49 7.03 6.28 7.66 7.60 0 1941/42 5.90 5.17 3.23 1.37 3.08 6.42 6.62 6.53 5.99 5.22 4.61 4.17 4.86 5.20 0 1942/43 3.39 3.36 4.57 6.19 5.76 5.73 6.73 10.71 10.67 10.66 10.65 10.64 7.42 6.46 0 1943/44 10.56 10.72 10.82 10.69 10.29 9.96 9.52 9.05 8.96 8.93 8.69 8.33 9.71 9.74 0 1944/45 8.20 7.83 8.02 7.52 7.16 7.85 7.96 7.82 7.73 7.57 7.30 6.94 7.66 7.78 0 1945/46 6.50 5.99 5.40 5.96 6.57 6.60 8.23 8.32 8.43 8.37 8.23 7.84 7.20 7.22 0 1946/47 7.72 7.47 6.97 6.49 6.73 6.77 6.42 6.63 6.66 6.58 6.34 6.25 6.75 6.64 0 1947/48 6.60 7.24 8.01 8.64 9.04 10.21 10.67 10.67 10.62 10.55 10.40 10.12 9.40 10.16 0 1948/49 10.38 10.29 9.66 8.97 8.36 8.84 8.69 8.48 8.44 8.41 8.24 7.83 8.88 8.59 0 1949/50 7.33 7.51 7.87 7.90 7.45 7.58 10.05 10.72 10.66 10.64 10.61 10.64 9.08 8.97 0 1950/51 10.33 9.98 9.72 10.04 10.02 10.08 9.90 9.69 9.57 9.48 9.28 8.94 9.75 9.81 0 1951/52 9.42 9.19 8.55 7.91 8.49 9.61 9.26 9.13 8.91 9.19 9.43 9.38 9.04 9.19 0 1952/53 9.69 9.34 8.90 8.55 10.25 10.48 10.66 10.52 10.29 10.07 9.77 9.45 9.83 9.92 0 1953/54 9.30 9.45 9.27 8.74 9.37 10.75 10.66 10.58 10.47 10.22 9.90 9.55 9.85 9.72 0 1954/55 9.07 8.53 8.65 8.78 10.78 10.69 10.59 10.64 10.48 10.24 9.95 9.58 9.83 10.10 0 1955/56 9.13 8.71 8.61 8.48 8.51 10.62 10.71 10.57 10.37 10.20 9.84 9.44 9.60 9.64 0 1956/57 9.02 8.97 10.03 10.15 10.42 10.41 10.46 10.14 9.80 9.66 9.42 9.99 9.87 10.01 0 1957/58 10.72 10.55 10.33 10.52 10.47 10.06 9.75 9.53 9.34 9.10 8.68 8.30 9.78 9.91 0 1958/59 7.82 8.48 8.48 8.94 8.82 8.95 8.76 9.16 9.23 9.33 9.38 8.99 8.86 8.95 0 1959/60 8.39 8.02 8.06 8.15 7.96 8.39 9.09 9.55 9.49 9.48 9.40 9.58 8.80 8.74 0 1960/61 9.41 9.72 9.43 8.97 8.48 8.33 9.56 10.28 10.67 10.63 10.48 10.19 9.68 9.64 0 1961/62 9.59 9.12 9.87 10.18 9.90 9.96 10.00 10.00 9.75 9.53 9.22 8.88 9.67 9.81 0 1962/63 8.37 8.13 8.60 8.51 10.31 10.66 10.80 10.67 10.64 10.62 10.64 10.42 9.86 10.52 0 1963/64 9.95 10.28 10.61 10.02 9.27 8.75 9.08 9.06 8.98 9.04 8.97 8.56 9.38 9.07 0 1964/65 8.74 9.43 8.84 8.40 7.92 7.18 7.23 8.01 8.00 8.02 7.86 7.37 8.08 8.01 0 1965/66 6.75 6.20 5.38 6.40 10.74 10.50 9.98 9.61 9.43 9.40 9.38 9.20 8.58 9.39 0 1966/67 8.64 7.89 7.60 8.01 9.42 9.42 10.47 10.75 10.69 10.67 10.66 10.49 9.56 9.95 0 1967/68 9.84 9.30 8.94 8.23 7.11 7.11 7.38 7.73 7.93 7.93 7.88 7.56 8.08 7.90 0 1968/69 6.91 6.12 6.62 6.61 6.16 8.23 10.23 10.67 10.67 10.66 10.47 10.16 8.62 9.19 0 1969/70 9.74 9.68 9.22 8.90 8.53 8.05 7.44 7.20 7.08 7.00 6.88 6.67 8.03 7.75 0 1970/71 7.85 7.69 7.51 7.56 9.04 10.05 10.38 10.72 10.67 10.67 10.55 10.06 9.40 10.05 0 1971/72 9.75 9.39 8.78 9.16 10.13 10.79 10.68 10.67 10.67 10.62 10.44 10.18 10.11 10.31 0 329 Tot ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Mean Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Mean Median Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Monthly Days 1972/73 9.92 9.39 8.59 7.59 7.92 8.17 8.17 8.16 8.07 7.91 7.63 7.50 8.25 8.11 0 1973/74 7.06 6.32 6.06 6.19 10.30 10.81 10.70 10.68 10.67 10.67 10.66 10.63 9.23 10.65 0 1974/75 10.41 10.55 10.63 10.22 9.66 10.01 10.22 10.15 10.09 10.17 10.04 9.80 10.16 10.16 0 1975/76 9.47 9.07 9.60 10.91 10.88 10.86 10.73 10.69 10.67 10.66 10.46 10.20 10.35 10.66 0 1976/77 10.71 10.60 10.05 9.58 9.48 9.70 9.66 9.50 9.32 9.16 8.82 8.63 9.60 9.54 0 1977/78 8.97 8.94 9.21 9.44 9.43 9.35 10.65 10.68 10.66 10.65 10.48 10.44 9.91 9.94 0 1978/79 10.23 9.73 9.96 9.96 9.58 9.45 9.40 9.54 9.47 9.40 9.71 10.55 9.75 9.65 0 1979/80 10.54 10.47 9.95 9.27 8.70 9.13 9.05 8.71 8.55 8.50 8.32 7.96 9.10 8.88 0 1980/81 7.58 6.94 6.87 6.65 8.63 10.00 9.82 9.74 9.88 9.84 9.85 10.51 8.86 9.78 0 1981/82 10.19 9.72 9.42 8.96 [8.34] 7.78 8.10 8.32 8.23 8.25 8.27 8.20 [8.65] [8.29] 1 1982/83 7.78 8.55 8.91 8.19 7.46 6.79 6.37 6.25 6.17 6.24 6.64 6.46 7.15 6.71 0 1983/84 6.13 5.65 6.02 7.08 6.65 6.28 6.24 6.19 6.12 6.09 5.86 5.86 6.18 6.12 0 1984/85 5.50 6.01 6.03 [5.18] 4.89 6.14 6.33 6.13 6.09 6.29 6.22 5.97 [5.90] [6.06] 1 1985/86 5.46 7.03 7.37 7.35 8.04 [7.80] 7.50 7.24 7.16 7.10 6.89 [6.68] [7.14] [7.20] 2 1986/87 6.61 7.67 7.57 6.92 6.40 [6.46] 6.29 6.13 6.02 5.99 6.04 6.18 [6.52] [6.35] 2 1987/88 [6.86] [7.25] 7.64 7.51 8.35 10.89 [10.76] 10.69 10.67 10.67 [10.60] 10.69 [9.38] [10.64] 5 1988/89 [10.70] 10.68 10.58 [10.70] 10.72 10.64 [10.57] 10.62 10.60 10.58 10.43 10.19 [10.58] [10.61] 3 1989/90 9.81 9.40 9.18 8.84 8.53 8.40 8.56 8.57 8.44 8.45 8.26 7.98 8.70 8.55 0 1990/91 7.47 6.93 6.57 6.68 10.62 10.69 10.62 10.42 10.32 10.31 10.18 10.07 9.24 10.24 0 1991/92 10.30 10.68 10.48 10.12 9.51 8.96 8.57 8.27 8.11 8.06 7.94 7.71 9.06 8.77 0 1992/93 7.50 7.32 6.91 6.39 6.13 6.60 6.79 6.88 6.81 6.76 6.64 6.36 6.76 6.78 0 1993/94 6.14 6.21 6.02 6.33 8.57 9.06 8.88 8.80 8.71 8.65 8.54 8.32 7.85 8.56 0 1994/95 7.98 7.51 7.03 6.48 6.05 6.21 6.40 6.36 6.32 6.24 5.97 5.62 6.51 6.34 0 1995/96 5.50 5.38 6.08 7.04 8.48 9.27 9.31 9.34 9.27 9.23 9.21 9.01 8.09 9.11 0 1996/97 8.75 8.64 8.77 8.66 8.44 9.13 10.12 10.11 10.13 10.11 10.08 9.98 9.41 9.55 0 1997/98 9.73 9.44 [9.07] 8.83 9.42 10.66 10.67 10.64 10.58 10.50 10.33 10.10 [10.00] [10.22] 1 1998/99 9.77 9.51 9.43 9.72 9.96 9.60 9.32 9.23 9.19 9.12 8.92 8.69 9.37 9.37 0 1999/ 0 8.41 8.01 7.89 8.79 10.03 10.70 10.67 10.69 10.63 10.60 10.48 10.39 9.77 10.43 0 2000/ 1 10.49 10.43 10.49 10.18 10.14 10.33 10.72 10.73 10.69 10.66 10.58 10.63 10.51 10.54 0 2001/ 2 10.41 10.78 10.78 10.70 10.62 10.51 10.40 10.36 10.69 10.66 10.70 10.73 10.61 10.67 0 2002/ 3 10.51 10.18 10.02 10.32 10.20 10.12 10.20 10.11 10.06 9.99 9.85 9.66 10.10 10.12 0 2003/ 4 9.35 8.99 8.88 8.65 8.36 8.28 8.41 8.30 8.23 8.18 8.05 7.87 8.46 8.33 0 2004/ 5 7.77 7.54 7.11 6.92 7.00 6.97 6.96 6.99 6.95 6.81 6.63 6.39 7.00 6.96 0 2005/ 6 6.03 5.85 5.53 5.90 9.49 10.73 10.78 10.76 10.69 10.66 10.74 10.65 8.98 10.66 0 2006/ 7 10.62 10.68 10.38 10.13 9.79 9.47 9.24 9.08 8.97 8.94 8.83 8.57 9.56 9.36 0 329 Tot ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Mean Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Mean Median Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Monthly Days 2007/ 8 8.42 8.14 8.54 8.86 8.71 8.78 8.80 8.76 8.83 8.81 8.68 8.38 8.64 8.74 0 2008/ 9 8.00 7.61 7.36 7.19 7.43 8.17 7.92 7.79 7.71 7.70 7.66Q 7.50Q 7.67Q 7.68Q 0 2009/10 8.38Q 10.29Q 10.44Q 10.35Q 10.69Q 10.57Q [10.62] [ ]M [ ]M [ ]M [ ]M [ ]M [10.19] [10.44] 171 329 Tot Mean [8.49] [8.39] [8.31] [8.27] [8.62] [8.97] [9.10] 9.13 9.06 9.00 [8.86] [8.67] [8.74] Mean Med. [8.69] [8.59] [8.60] [8.53] [8.70] [9.31] [9.32] 9.42 9.29 9.21 [9.22] [8.91] [8.96] Med. Max [10.72] [10.78] [10.82] [10.91] [10.88] [10.89] [10.80] 10.76 10.69 10.67 [10.74] [10.73] [10.61] Max Min [3.39] [3.36] [3.23] [1.37] [3.08] [5.73] [6.08] 6.13 5.99 5.22 [4.61] [4.17] [4.86] Min OK 100% 100% 100% 100% 99% 100% 99% 100% 100% 100% 100% 100% 100% OK Cnt 72 72 72 72 73 73 73 72 72 72 72 72 73 Cnt ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Maximum Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Max Days 1937/38 [ ]M [ ]M [ ]M [ ]M [5.88] 5.91 6.22 6.22 6.65 6.68 6.65 6.44 [6.68] 143 1938/39 5.95 6.16 6.03 6.81 9.39 9.42 9.21 9.02 8.90 8.81 8.75 8.75 9.42 0 1939/40 8.56 8.23 7.94 7.71 7.26 7.80 7.83 8.14 8.11 7.93 7.45 6.84 8.56 0 1940/41 6.86 6.61 7.16 7.80 9.39 9.45 9.12 8.72 8.35 7.71 7.25 6.80 9.45 0 1941/42 5.97 5.82 4.41 2.01 5.24 6.65 6.68 6.61 6.26 5.73 4.78 4.54 6.68 0 1942/43 3.73 3.66 6.34 6.34 6.00 6.06 9.35 11.77 10.70 10.67 10.66 10.65 11.77 0 1943/44 10.82 11.00 11.22 11.31 10.51 10.09 9.88 9.23 8.99 8.99 8.87 8.43 11.31 0 1944/45 8.37 8.29 8.29 7.75 7.30 8.11 8.08 7.88 7.76 7.68 7.49 7.16 8.37 0 1945/46 6.71 6.25 5.75 6.25 6.86 7.25 8.35 8.46 8.46 8.40 8.35 8.10 8.46 0 1946/47 7.77 7.74 7.26 6.68 7.10 6.98 6.52 6.72 6.69 6.64 6.49 6.54 7.77 0 1947/48 7.31 7.31 8.41 9.08 9.16 11.16 10.70 10.71 10.67 10.58 10.47 10.29 11.16 0 1948/49 10.74 10.57 10.01 9.35 8.55 9.05 8.86 8.50 8.47 8.44 8.37 8.06 10.74 0 1949/50 7.60 8.05 8.02 8.11 7.65 8.74 10.91 11.06 10.68 10.68 10.94 10.72 11.06 0 1950/51 10.54 10.28 9.81 10.13 10.13 10.21 9.97 9.86 9.57 9.57 9.43 9.09 10.54 0 1951/52 9.54 9.46 8.88 8.26 9.31 9.69 9.41 9.25 9.02 9.48 9.48 9.85 9.85 0 1952/53 9.85 9.51 9.12 8.92 10.70 10.65 10.74 10.66 10.42 10.19 9.93 9.61 10.74 0 1953/54 9.55 9.52 9.49 9.09 10.64 11.02 10.70 10.62 10.53 10.35 10.08 9.74 11.02 0 1954/55 9.32 8.83 8.87 11.02 11.34 10.76 10.88 10.70 10.57 10.38 10.09 9.80 11.34 0 1955/56 9.38 8.90 8.84 8.77 10.55 11.00 10.82 10.67 10.45 10.27 10.07 9.59 11.00 0 1956/57 9.34 9.49 10.21 10.31 10.62 10.59 10.50 10.41 9.91 9.71 9.53 11.43 11.43 0 1957/58 11.25 10.68 10.39 11.03 10.66 10.29 9.89 9.65 9.39 9.24 8.91 8.48 11.25 0 1958/59 8.14 8.91 8.90 9.11 8.87 9.05 8.98 9.23 9.23 9.47 9.46 9.26 9.47 0 1959/60 8.73 8.20 8.29 8.44 8.47 8.47 9.51 9.60 9.54 9.49 9.48 9.69 9.69 0 1960/61 9.46 9.91 9.73 9.23 8.74 9.13 10.00 10.36 10.79 10.67 10.55 10.35 10.79 0 1961/62 9.94 9.23 10.67 10.49 10.06 10.00 10.09 10.06 9.84 9.66 9.43 9.08 10.67 0 1962/63 8.69 8.70 8.69 8.67 11.43 10.76 11.49 10.68 10.65 10.64 10.64 10.62 11.49 0 1963/64 10.22 10.85 10.82 10.37 9.60 8.99 9.10 9.08 9.05 9.05 9.02 8.81 10.85 0 1964/65 9.61 9.60 9.10 8.66 8.16 7.60 8.05 8.05 8.02 8.02 8.02 7.62 9.61 0 1965/66 7.03 6.37 5.86 10.21 12.50 10.67 10.19 9.75 9.46 9.41 9.40 9.36 12.50 0 1966/67 9.01 8.22 7.93 8.73 9.45 9.75 11.28 11.13 10.74 10.67 10.67 10.66 11.28 0 1967/68 10.24 9.45 9.11 8.79 7.65 7.24 7.62 7.93 7.93 7.93 7.93 7.80 10.24 0 1968/69 7.31 6.52 7.01 6.77 6.91 9.07 10.68 10.67 10.67 10.67 10.62 10.33 10.68 0 1969/70 9.97 9.75 9.53 9.14 8.69 8.31 7.74 7.31 7.12 7.05 6.96 7.18 9.97 0 1970/71 7.94 7.84 7.57 8.08 10.06 10.08 10.80 10.97 10.67 10.67 10.67 10.34 10.97 0 1971/72 9.90 9.59 9.15 10.06 11.34 11.13 10.86 10.69 10.67 10.67 10.56 10.29 11.34 0 329 Total ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Maximum Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Max Days 1972/73 10.05 9.76 8.97 8.17 8.38 8.38 8.23 8.23 8.10 8.03 7.71 7.58 10.05 0 1973/74 7.38 6.66 6.10 7.48 11.68 11.89 10.98 10.70 10.67 10.67 10.67 10.67 11.89 0 1974/75 10.57 10.97 10.69 10.55 9.85 10.21 10.24 10.21 10.13 10.21 10.14 9.88 10.97 0 1975/76 9.81 9.17 10.97 11.73 11.55 11.22 11.03 10.79 10.68 10.67 10.61 10.35 11.73 0 1976/77 10.94 10.72 10.33 9.80 9.56 9.77 9.75 9.57 9.37 9.30 8.91 8.84 10.94 0 1977/78 9.16 9.17 9.38 9.54 9.46 10.00 11.02 10.71 10.67 10.67 10.59 10.45 11.02 0 1978/79 10.45 10.00 10.25 10.22 9.77 9.56 9.50 9.59 9.54 9.43 10.55 10.58 10.58 0 1979/80 11.20 10.70 10.30 9.66 8.97 9.20 9.18 8.91 8.58 8.54 8.46 8.17 11.20 0 1980/81 7.82 7.23 6.96 7.99 9.13 10.10 9.97 9.78 9.92 9.88 10.52 10.55 10.55 0 1981/82 10.41 9.98 9.51 9.30 [8.63] 8.09 8.36 8.36 8.24 8.30 8.29 8.26 [10.41] 1 1982/83 8.01 9.19 9.11 8.61 7.81 7.11 6.49 6.30 6.20 6.68 6.68 6.57 9.19 0 1983/84 6.36 5.93 6.13 7.36 7.03 6.42 6.29 6.24 6.14 6.12 6.12 5.96 7.36 0 1984/85 5.67 6.28 6.30 [5.69] 5.07 6.37 6.35 6.27 6.32 6.32 6.27 6.17 [6.37] 1 1985/86 5.97 7.17 7.48 7.66 8.22 [7.94] 7.66 7.35 7.19 7.13 7.04 [6.75] [8.22] 2 1986/87 7.01 7.92 7.88 7.32 6.58 [6.58] 6.36 6.26 6.04 6.02 6.12 6.86 [7.92] 2 1987/88 [6.92] [7.59] 7.88 7.84 12.48 12.13 [11.21] 10.70 10.69 10.69 [10.67] 11.49 [12.48] 5 1988/89 [10.92] 10.92 10.95 [10.83] 11.75 10.70 [10.63] 10.65 10.61 10.60 10.56 10.28 [11.75] 3 1989/90 10.07 9.54 9.32 9.07 8.65 8.46 8.62 8.62 8.46 8.46 8.42 8.09 10.07 0 1990/91 7.81 7.18 6.66 9.60 11.47 10.94 10.69 10.52 10.33 10.32 10.28 10.13 11.47 0 1991/92 11.11 10.78 10.57 10.36 9.78 9.24 8.74 8.43 8.15 8.08 8.03 7.83 11.11 0 1992/93 7.60 7.40 7.15 6.68 6.60 6.63 6.88 6.91 6.83 6.78 6.68 6.60 7.60 0 1993/94 6.37 6.37 6.19 6.77 9.13 9.11 8.97 8.85 8.73 8.67 8.62 8.48 9.13 0 1994/95 8.16 7.75 7.27 6.79 6.25 6.43 6.45 6.38 6.35 6.29 6.16 5.73 8.16 0 1995/96 5.57 5.49 6.86 8.33 8.86 9.34 9.38 9.37 9.30 9.24 9.24 9.14 9.38 0 1996/97 8.92 8.85 8.86 8.72 8.64 9.93 10.15 10.14 10.15 10.13 10.10 10.08 10.15 0 1997/98 9.84 9.65 [9.26] 8.91 10.60 10.85 10.70 10.68 10.62 10.56 10.43 10.23 [10.85] 1 1998/99 9.96 9.63 9.63 10.01 10.05 9.82 9.49 9.25 9.22 9.17 9.04 8.81 10.05 0 1999/ 0 8.56 8.27 8.45 9.12 10.62 10.81 10.75 10.89 10.65 10.62 10.58 10.55 10.89 0 2000/ 1 10.54 10.51 10.60 10.45 10.32 10.60 11.15 11.20 10.71 10.69 10.63 10.69 11.20 0 2001/ 2 10.56 11.42 11.20 11.13 10.84 10.56 10.44 10.79 10.79 10.67 11.20 10.88 11.42 0 2002/ 3 10.65 10.35 10.16 10.47 10.29 10.26 10.25 10.14 10.08 10.03 9.92 9.79 10.65 0 2003/ 4 9.58 9.12 9.07 8.79 8.51 8.36 8.44 8.36 8.26 8.21 8.12 7.99 9.58 0 2004/ 5 7.85 7.76 7.33 7.19 7.16 7.02 7.01 7.02 6.99 6.91 6.72 6.49 7.85 0 2005/ 6 6.21 5.91 5.75 7.42 10.94 11.08 11.49 11.09 10.70 10.69 11.23 10.72 11.49 0 2006/ 7 10.75 11.02 10.56 10.30 9.96 9.61 9.28 9.19 8.99 8.96 8.91 8.75 11.02 0 329 Total ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Maximum Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Max Days 2007/ 8 8.49 8.34 8.63 8.95 8.81 8.82 8.83 8.80 8.86 8.84 8.76 8.54 8.95 0 2008/ 9 8.21 7.77 7.45 7.38 8.20 8.24 8.03 7.84 7.74 7.72 7.70Q 7.63Q 8.24Q 0 2009/10 9.52Q 10.73Q 10.64Q 11.14Q 10.87Q 10.65Q [10.65] [ ]M [ ]M [ ]M [ ]M [ ]M [11.14] 171 329 Total Mean [8.75] [8.65] [8.61] [8.76] [9.16] [9.23] [9.32] 9.24 9.11 9.06 [9.00] [8.87] [10.15] Mean Med. [9.08] [8.91] [8.87] [8.85] [9.31] [9.45] [9.50] 9.47 9.34 9.36 [9.32] [9.09] Med. Max [11.25] [11.42] [11.22] [11.73] [12.50] [12.13] [11.49] 11.77 10.79 10.69 [11.23] [11.49] [12.50] Max Min [3.73] [3.66] [4.41] [2.01] [5.07] [5.91] [6.22] 6.22 6.04 5.73 [4.78] [4.54] [6.37] Min OK 100% 100% 100% 100% 99% 100% 99% 100% 100% 100% 100% 100% 100% OK Cnt 72 72 72 72 73 73 73 72 72 72 72 72 73 Cnt ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Minimum Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Min Days 1937/38 [ ]M [ ]M [ ]M [ ]M [5.20] 5.88 5.88 6.19 6.19 6.61 6.44 5.95 [5.20] 143 1938/39 5.46 5.52 5.85 6.00 6.81 9.21 9.02 8.87 8.81 8.75 8.69 8.56 5.46 0 1939/40 8.18 7.94 7.65 7.26 6.95 6.92 7.68 7.83 7.93 7.45 6.69 6.10 6.10 0 1940/41 6.32 6.00 6.31 7.16 7.77 9.12 8.72 8.35 7.71 7.25 6.80 5.82 5.82 0 1941/42 5.73 4.41 2.01 1.04 0.95 5.24 6.52 6.26 5.73 4.78 4.54 3.73 0.95 0 1942/43 2.90 2.59 2.59 5.97 5.22 5.15 5.88 9.35 10.67 10.66 10.65 10.64 2.59 0 1943/44 10.36 10.64 10.58 10.51 10.03 9.81 9.23 8.93 8.93 8.87 8.43 8.14 8.14 0 1944/45 8.02 7.51 7.75 7.26 6.95 6.99 7.88 7.76 7.68 7.49 7.16 6.71 6.71 0 1945/46 6.25 5.75 5.00 5.53 6.10 6.37 7.25 8.26 8.40 8.35 8.10 7.69 5.00 0 1946/47 7.64 7.26 6.68 6.27 6.19 6.52 6.34 6.43 6.64 6.49 6.13 5.91 5.91 0 1947/48 6.26 7.09 7.18 8.41 8.88 9.16 10.62 10.65 10.58 10.47 10.29 9.91 6.26 0 1948/49 9.84 10.01 9.35 8.55 8.21 8.47 8.49 8.45 8.44 8.37 8.06 7.60 7.60 0 1949/50 7.11 6.92 7.80 7.65 7.26 7.24 8.74 10.65 10.63 10.60 10.56 10.54 6.92 0 1950/51 10.15 9.70 9.63 9.67 9.94 9.97 9.86 9.57 9.57 9.43 9.09 8.81 8.81 0 1951/52 8.87 8.88 8.26 7.75 7.76 9.31 9.18 9.02 8.84 8.84 9.40 9.17 7.75 0 1952/53 9.46 9.12 8.83 8.26 8.26 10.29 10.50 10.42 10.19 9.93 9.61 9.27 8.26 0 1953/54 9.05 9.28 9.09 8.38 8.59 10.58 10.62 10.53 10.35 10.08 9.74 9.32 8.38 0 1954/55 8.83 8.30 8.25 8.15 10.64 10.63 10.42 10.57 10.38 10.09 9.80 9.38 8.15 0 1955/56 8.90 8.49 8.44 8.18 7.86 10.45 10.67 10.45 10.27 10.07 9.59 9.34 7.86 0 1956/57 8.75 8.72 9.44 9.97 10.01 10.24 10.30 9.91 9.71 9.53 9.34 9.43 8.72 0 1957/58 10.67 10.39 10.23 10.17 10.29 9.89 9.65 9.34 9.24 8.91 8.48 8.14 8.14 0 1958/59 7.62 7.62 8.29 8.76 8.75 8.84 8.56 8.87 9.21 9.19 9.26 8.73 7.62 0 1959/60 8.20 7.74 7.67 7.78 7.67 8.35 8.35 9.48 9.48 9.46 9.27 9.45 7.67 0 1960/61 9.34 9.37 9.23 8.74 8.22 8.02 9.13 9.97 10.36 10.55 10.35 9.94 8.02 0 1961/62 9.23 9.07 9.11 9.82 9.69 9.88 9.94 9.84 9.66 9.43 9.08 8.69 8.69 0 1962/63 8.04 7.73 8.50 8.43 8.64 10.56 10.68 10.65 10.62 10.60 10.62 10.22 7.73 0 1963/64 9.78 9.88 10.37 9.60 8.99 8.66 8.66 9.04 8.84 9.02 8.81 8.30 8.30 0 1964/65 8.03 9.10 8.66 8.16 7.60 6.83 6.83 7.99 7.99 8.02 7.62 7.03 6.83 0 1965/66 6.37 5.86 4.76 4.11 10.21 10.19 9.75 9.46 9.41 9.40 9.36 9.01 4.11 0 1966/67 8.22 7.59 7.01 7.79 8.73 9.30 9.75 10.67 10.67 10.67 10.66 10.24 7.01 0 1967/68 9.45 9.11 8.79 7.65 6.66 6.61 7.15 7.62 7.93 7.93 7.80 7.31 6.61 0 1968/69 6.52 5.67 5.65 6.31 5.97 6.91 9.07 10.67 10.67 10.52 10.33 9.97 5.65 0 1969/70 9.60 9.53 8.99 8.59 8.31 7.74 7.31 7.12 7.05 6.96 6.71 6.54 6.54 0 1970/71 7.13 7.57 7.40 7.31 8.05 10.00 10.06 10.67 10.67 10.67 10.33 9.90 7.13 0 1971/72 9.59 9.15 8.39 8.20 9.69 10.67 10.67 10.67 10.67 10.56 10.29 10.05 8.20 0 329 Total ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Minimum Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Min Days 1972/73 9.76 8.97 8.17 6.92 6.77 7.93 7.91 8.10 8.03 7.71 7.58 7.38 6.77 0 1973/74 6.66 6.03 6.00 5.94 7.48 10.67 10.67 10.67 10.67 10.67 10.64 10.57 5.94 0 1974/75 10.11 10.06 10.55 9.85 9.56 9.60 10.21 10.11 10.06 10.13 9.88 9.75 9.56 0 1975/76 9.17 8.99 8.73 10.68 10.64 10.59 10.68 10.67 10.67 10.61 10.35 10.06 8.73 0 1976/77 10.21 10.33 9.80 9.38 9.40 9.39 9.57 9.37 9.30 8.91 8.70 8.51 8.51 0 1977/78 8.82 8.65 8.63 9.31 9.37 9.26 10.00 10.65 10.65 10.59 10.38 10.39 8.63 0 1978/79 10.00 9.42 9.30 9.77 9.44 9.22 9.29 9.49 9.43 9.37 9.36 10.52 9.22 0 1979/80 10.30 10.30 9.66 8.97 8.40 8.95 8.91 8.58 8.54 8.46 8.17 7.80 7.80 0 1980/81 7.23 6.73 6.73 6.15 7.99 9.13 9.69 9.71 9.76 9.77 9.60 10.41 6.15 0 1981/82 9.98 9.51 9.30 8.63 [8.09] 7.64 7.61 8.22 8.22 8.23 8.23 8.01 [7.61] 1 1982/83 7.58 7.78 8.61 7.81 7.11 6.49 6.28 6.20 6.16 6.12 6.57 6.36 6.12 0 1983/84 5.93 5.43 5.86 5.97 6.31 6.15 6.15 6.14 6.10 6.05 5.59 5.67 5.43 0 1984/85 5.27 5.63 5.69 [4.94] 4.76 5.07 6.27 6.05 6.01 6.27 6.17 5.73 [4.76] 1 1985/86 5.21 5.97 7.02 7.11 7.66 [7.66] 7.35 7.19 7.13 7.04 6.74 [6.61] [5.21] 2 1986/87 6.51 7.01 7.32 6.53 6.34 [6.36] 6.21 6.04 6.00 5.97 5.99 6.02 [5.97] 2 1987/88 [6.83] [6.74] 7.41 7.19 6.95 10.69 [10.69] 10.69 10.67 10.67 [10.47] 10.45 [6.74] 5 1988/89 [10.63] 10.52 10.48 [10.60] 10.52 10.57 [10.55] 10.58 10.59 10.56 10.28 10.07 [10.07] 3 1989/90 9.54 9.30 9.07 8.65 8.38 8.33 8.45 8.46 8.42 8.42 8.08 7.81 7.81 0 1990/91 7.18 6.65 6.43 6.21 9.60 10.55 10.52 10.33 10.29 10.28 10.09 9.99 6.21 0 1991/92 9.94 10.57 10.33 9.78 9.24 8.74 8.43 8.15 8.08 8.03 7.83 7.60 7.60 0 1992/93 7.35 7.15 6.68 6.15 5.96 6.57 6.63 6.83 6.77 6.68 6.60 6.08 5.96 0 1993/94 6.01 6.05 5.91 5.95 6.77 8.97 8.83 8.73 8.67 8.62 8.48 8.16 5.91 0 1994/95 7.75 7.27 6.79 6.25 5.89 5.89 6.34 6.34 6.29 6.16 5.73 5.57 5.57 0 1995/96 5.46 5.23 5.46 6.70 8.30 8.86 9.24 9.30 9.24 9.21 9.14 8.92 5.23 0 1996/97 8.56 8.47 8.66 8.60 8.24 8.24 9.93 10.09 10.11 10.10 10.05 9.84 8.24 0 1997/98 9.65 9.26 [8.90] 8.73 8.72 10.56 10.65 10.60 10.54 10.39 10.23 9.94 [8.72] 1 1998/99 9.59 9.41 9.21 9.53 9.82 9.49 9.18 9.22 9.16 9.04 8.81 8.56 8.56 0 1999/ 0 8.27 7.75 7.72 8.45 9.11 10.57 10.63 10.65 10.62 10.58 10.36 10.22 7.72 0 2000/ 1 10.40 10.33 10.36 10.00 10.01 10.16 10.60 10.67 10.67 10.63 10.52 10.55 10.00 0 2001/ 2 10.28 10.55 10.68 10.57 10.48 10.44 10.36 10.31 10.66 10.61 10.57 10.65 10.28 0 2002/ 3 10.35 9.96 9.94 10.08 10.13 9.96 10.14 10.08 10.03 9.92 9.79 9.58 9.58 0 2003/ 4 9.12 8.85 8.70 8.51 8.26 8.24 8.36 8.26 8.21 8.12 7.97 7.74 7.74 0 2004/ 5 7.71 7.33 6.94 6.67 6.90 6.93 6.91 6.90 6.90 6.72 6.49 6.21 6.21 0 2005/ 6 5.88 5.74 5.28 5.29 7.41 10.65 10.68 10.70 10.68 10.62 10.62 10.58 5.28 0 2006/ 7 10.52 10.55 10.27 9.96 9.61 9.28 9.19 8.99 8.95 8.91 8.75 8.43 8.43 0 329 Total ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R001 Witspruit @ Egmont Site D2R001 VarFrom 100.00 Surface Water Level in Metres VarTo 101.00 Minimum Corrected Surface Water Level in Metres Figures are for period starting 0 hours. Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Min Days 2007/ 8 8.34 7.97 8.24 8.53 8.68 8.64 8.78 8.69 8.68 8.76 8.53 8.21 7.97 0 2008/ 9 7.77 7.44 7.25 7.02 7.03 8.03 7.83 7.71 7.69 7.67 7.63Q 7.36Q 7.02Q 0 2009/10 7.36Q 9.52Q 10.24Q 10.06Q 10.64Q 10.50Q [10.58] [ ]M [ ]M [ ]M [ ]M [ ]M [7.36] 171 329 Total Mean [8.24] [8.10] [8.00] [7.93] [8.12] [8.70] [8.90] 9.03 9.01 8.92 [8.74] [8.50] [7.12] Mean Med. [8.30] [8.38] [8.34] [8.19] [8.26] [9.12] [9.18] 9.32 9.24 9.11 [9.09] [8.71] Med. Max [10.67] [10.64] [10.68] [10.68] [10.64] [10.69] [10.69] 10.70 10.68 10.67 [10.66] [10.65] [10.28] Max Min [2.90] [2.59] [2.01] [1.04] [0.95] [5.07] [5.88] 6.04 5.73 4.78 [4.54] [3.73] [0.95] Min OK 100% 100% 100% 100% 99% 100% 99% 100% 100% 100% 100% 100% 100% OK Cnt 72 72 72 72 73 73 73 72 72 72 72 72 73 Cnt ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... M ... Missing Data Q ... Data Not Audited