Department of Water Affairs HYMONTH V93 Output 30/08/2010 Site D3R002 Orange River @ Ruigtevallei Site D3R002.V Variable 10.10 Total Rainfall in Millimetres, on reservoir surface Figures are for period starting 0 hours. Mean Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Total Days 1971/72 [ ]M [ ]M [52.0] 82.8$ 92.0$ 167.6& 24.5& 0.0& 6.3& 0.0& 0.0& 6.0 [43.1] [431.2] 73 1972/73 33.3 10.0& 0.0& 2.5 40.2 32.7 58.3 24.5& 0.0& 5.6 18.2 3.9 19.1& 229.2& 0 1973/74 3.9 33.5 98.0 141.3 226.0 210.3 33.7 86.4 12.6 2.0 115.5& 0.0& 80.3& 963.2& 0 1974/75 9.8 51.5 17.9 52.9& 48.1& 90.7& 56.9& 1.3& 16.3& 16.0& 0.0& 16.3& 31.5& 377.7& 0 1975/76 0.0& 48.0& 68.6& 115.8& 129.8& 229.4& 96.5& 27.2& 6.1& 9.7& 0.5& 48.0& 65.0& 779.6& 0 1976/77 61.7& 42.2& 33.0& 19.3& 85.9& 107.2& 19.6& 27.2& 14.0& 0.0& 0.0& 22.1& 36.0& 432.2& 0 1977/78 45.7& 35.3& 56.4& 52.8& 25.9& 85.6& 63.8& 0.0& 5.0& 2.5& 17.5& 36.8& 35.6& 427.3& 0 1978/79 47.2& 7.6& 53.8& 40.6& 69.3 6.9 24.7 61.6 8.2 27.8 37.0 3.9 32.4& 388.6& 0 1979/80 26.8 25.0 12.0 39.5 105.9 36.8 10.0& 0.0& 5.1 2.5 23.4 16.1& 25.3& 303.1& 0 1980/81 0.0& 41.1 53.1 70.8 127.9 64.4 7.0 48.5 18.0 1.2 109.3 0.0& 45.1& 541.3& 0 1981/82 13.8 22.5 81.7 27.5 33.4 54.5 42.0& 0.0& 25.6 42.0 0.5 21.5 30.4& 365.0& 0 1982/83 35.6 47.6 8.5 8.7 0.0& 64.8 12.0 33.0 15.3 44.5& 0.0& 39.0 25.7& 309.0& 0 1983/84 14.0 62.5 63.5 29.0 1.6 39.0 41.7 18.6 2.0& 0.0& 62.0 0.0 27.8& 333.9& 0 1984/85 73.9 19.0& 0.0& 35.3 78.4 31.0 7.4& 0.0& 0.9& 0.0& 0.0& 0.3 20.5& 246.2& 0 1985/86 85.6 94.5 131.0 91.7 22.0 18.7 12.5& 0.0& 11.0 2.8 28.0 19.0 43.1& 516.8& 0 1986/87 76.1 96.5 7.0& 0.0& 68.6 19.4 14.6 1.3 39.5 29.2 13.0 84.0 37.4& 449.2& 0 1987/88 18.2 71.5 14.0 10.0 321.7 134.2 85.5 17.0 31.0 3.0& 0.0& 57.0 63.6& 763.1& 0 1988/89 25.3 34.1 76.7 90.6 106.7 22.4 59.0 17.0 6.0 2.5 3.0 2.5 37.2 445.8 0 1989/90 4.5 54.5 13.5 59.8 78.6 89.3 66.1 7.0 43.8 10.1 11.6& 0.0& 36.6& 438.8& 0 1990/91 15.6 12.6 33.2 237.0 60.5 117.9 0.1& 0.0& 23.0& 0.0& 0.0& 33.3 44.4& 533.2& 0 1991/92 157.3 37.0 52.5 2.0 6.1 66.9 1.5& 0.0& 6.0 6.5 48.0& 0.0& 32.0& 383.8& 0 1992/93 46.2 50.0& 0.0& 13.5 65.0 33.2 68.8 6.0 7.5 10.1 5.5 0.0& 25.5& 305.8& 0 1993/94 72.0 57.9 146.0 103.5 70.5 52.5 3.0 0.0& 0.3 6.1& 0.0& 0.2 42.7& 512.0& 0 1994/95 0.6 16.0 2.0 17.1 24.1 49.1 7.5 26.1& 0.0& 0.0& 0.6 14.5 13.1& 157.6& 0 1995/96 6.3 46.3 112.7 51.4 44.2 35.4 29.1 5.0 3.1 16.0 6.0 2.2 29.8 357.7 0 1996/97 5.2 88.6 56.7 68.4 30.6 90.9 56.4 63.5 17.7 10.8 3.2& 0.0& 41.0& 492.0& 0 1997/98 16.0 4.5 5.7 11.5 55.2 79.0 20.5 18.5 3.0& 0.0& 14.0 12.0 20.0& 239.9& 0 1998/99 26.5 123.5 30.5 18.1 4.0 24.0 32.0 36.0& 0.0& 3.0& 0.0& 4.5 25.2& 302.1& 0 1999/ 0 27.0 8.0 89.9 65.2 56.5 98.0 66.0 6.5 12.5 3.0 3.6 64.8 41.7 501.0 0 2000/ 1 11.0 22.6 30.0 6.5 28.0 46.5 121.2 40.0 8.0 6.5 0.5 83.5 33.7 404.3 0 2001/ 2 30.0 158.0 177.5 178.7 23.0 24.1 19.0 23.0 43.0 2.5 121.5 24.3 68.7 824.6 0 2002/ 3 3.0 25.5 85.0 4.7 52.0 38.5 26.5 34.5 0.0 0.0 7.1 23.6 25.0 300.4 0 2003/ 4 15.9 41.8 12.0 53.0 80.5 86.0 92.0 1.8 2.1 6.5 4.0 94.0 40.8 489.6 0 2004/ 5 35.0 16.0 76.0 57.5 49.5 22.0 27.5 35.0 33.0 1.0 17.5 0.0 30.8 370.0 0 2005/ 6 17.5 28.0 31.6 155.0 189.0 103.0 71.5 21.5 4.0 23.0 86.5 0.3 60.9 730.9 0 299 Tot ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... $ ... Gauge Plate Readings & ... Monthly Reading M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 30/08/2010 Site D3R002 Orange River @ Ruigtevallei Site D3R002.V Variable 10.10 Total Rainfall in Millimetres, on reservoir surface Figures are for period starting 0 hours. Mean Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Total Days 2006/ 7 30.0 21.0 18.5 49.0 12.0 55.0 55.5 1.0 16.0 6.0 5.0 5.3 22.9 274.3 0 2007/ 8 29.0 38.5 179.5 50.5 88.0 17.0 35.5 67.5 46.0 0.7 7.6 0.0 46.6 559.8 0 2008/ 9 11.0 27.5 28.5 49.5 151.5 26.0 23.5 34.5 49.5Q 8.0Q 7.5Q 0.0Q 34.8Q 417.0Q 0 2009/10 94.0Q 57.5Q 9.5Q 121.0Q [32.0] [ ]M [ ]M [ ]M [ ]M [ ]M [ ]M [ ]M [62.8] [314.0] 226 299 Tot Mean 32.2& 44.1& [51.7] 58.6& [71.4] 67.6& 39.3& 20.8& 14.2& 8.2& 20.5& 19.4& [37.9] [441.3] Mean Med. 25.9& 37.8& [33.2] 50.5& [56.5] 53.5& 30.6& 17.8& 8.1& 3.0& 5.8& 5.7& Med. Max 157.3& 158.0& [179.5] 237.0& [321.7] 229.4& 121.2& 86.4& 49.5& 44.5& 121.5& 94.0& [80.3] [963.2] Max Min 0.0& 4.5& [0.0] 0.0& [0.0] 6.9& 0.1& 0.0& 0.0& 0.0& 0.0& 0.0& [13.1] [157.6] Min OK 100% 100% 99% 100% 99% 100% 100% 100% 100% 100% 100% 100% 100% 100% OK Cnt 38 38 39 39 39 38 38 38 38 38 38 38 39 39 Cnt ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... $ ... Gauge Plate Readings & ... Monthly Reading M ... Missing Data Q ... Data Not Audited