Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2E007 Welbedacht @ Welbedacht Dam Site D2E007 Variable 10.00 Total Rainfall in Millimetres Figures are for period starting 800 hours. Mean Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Total Days 1970/71 [1.0] 30.0& 81.0& 82.8& 82.3& 79.5& 54.9& 60.5& 0.0& 0.0& 8.9& 3.6& [40.4] [484.5] 30 1971/72 39.1& 20.1& 42.7& 103.1& 176.3& 172.2& 17.3& 23.1& 5.3& 0.0& 4.0& 0.0& 50.3& 603.2& 0 1972/73 59.7& 46.5& 24.5& 3.8& 62.0& 34.3& 35.8& 15.5& 0.0& 0.0& 56.4& 46.0& 32.0& 384.5& 0 1973/74 52.1& 29.2& 79.0& 226.3& 317.8& 141.2& 65.5& 15.5& 3.3& 2.0& 54.6& 3.3& 82.5& 989.8& 0 1974/75 48.8& 101.6& 44.7& 34.3& 94.0& 70.1& 85.3& 0.0& 48.5& 15.5& 0.0& 39.9& 48.6& 582.7& 0 1975/76 4.1& 81.8& 163.3& 208.3& 159.0& 139.7& 58.2& 50.8& 17.3& 3.8& 0.3& 88.6& 81.3& 975.2& 0 1976/77 102.1& 24.6& 163.8& 106.7& 69.9& 76.7& 39.9& 11.2& 4.8& 0.0& 3.4& 77.5& 56.7& 680.6& 0 1977/78 116.6& 23.1& 127.3& 61.5& 102.9& 118.1& 121.5& 0.0& 8.0& 4.7& 31.0& 38.9& 62.8& 753.6& 0 1978/79 9.7& 11.3& 120.4& 64.8& 53.6& 8.5& 60.3& 27.5& 2.0& 27.0& 121.8& 6.3& 42.8& 513.2& 0 1979/80 97.7& 15.6& 43.5& 53.2 89.5 56.1 23.8& 0.0& 2.2 0.7 11.3 54.2& 37.3& 447.8& 0 1980/81 0.0& 65.8 46.5 133.4 90.1 83.8 37.8 60.9 21.5& 0.0& 108.8& 0.0& 54.1& 648.6& 0 1981/82 33.9 69.5 91.9 39.2 33.6 43.2 86.7& 0.0& 41.1 44.0& 0.0& 42.3 43.8& 525.4& 0 1982/83 96.2 116.9 38.8 37.0 23.0 30.0 44.8 9.0 18.3 61.5& 0.0& 17.0 41.0& 492.5& 0 1983/84 52.8 124.9 106.6 35.5 22.8 84.1 19.5 38.6 6.5& 0.0& 67.0 1.0 46.6& 559.3& 0 1984/85 97.5 50.0 8.3 48.2 125.0 79.6 12.0& 0.0& 60.0& 0.0& 0.0& 0.6 40.1& 481.2& 0 1985/86 149.9 48.6 74.2 160.4 64.1 54.5 19.0& 0.0& 13.5& 0.0& 37.6 41.3 55.3& 663.1& 0 1986/87 102.9 89.4 28.4 16.4 184.0 36.2 31.4& 0.0& 6.0 23.2 48.4 174.0 61.7& 740.3& 0 1987/88 58.1 158.6 83.3 14.5 614.6 259.4 94.2 2.7 29.6 8.4 9.2 167.0 125.0 1499 0 1988/89 163.3 43.5 90.4 197.6 184.4 54.5 96.5 23.6 4.4 10.7 1.0 34.0 75.3 903.9 0 1989/90 7.6 98.4 89.4 52.7 66.2 167.4 76.1 12.5 27.3 3.6 10.8 7.4 51.6 619.4 0 1990/91 0.6 4.3 64.4 175.4 98.7 103.2& 0.0& 0.0& 47.5 8.5& 0.0& 63.3 47.2& 565.9& 0 1991/92 204.8 73.8 63.0 10.6 63.8 33.7 29.0& 0.0& 0.1& 0.0& 26.6 6.9 42.7& 512.3& 0 1992/93 80.8 63.8 31.4 48.5 104.8 67.6 40.0 53.0 3.3& 0.0& 44.1& 0.0& 44.8& 537.3& 0 1993/94 125.0 91.5 88.1 169.9 301.9 75.2 35.4 0.0& 0.0& 19.5 1.0& 0.0& 75.6& 907.5& 0 1994/95 0.0& 31.5 14.1 145.1 24.0 74.0 18.0 41.0 3.8& 0.0& 0.0& 31.5 31.9& 383.0& 0 1995/96 59.6 66.5 230.0 294.5 219.0 36.5 87.5 11.5 1.3 68.0 24.5 21.0& 93.3& 1119 & 0 1996/97 0.0& 167.5 101.8 130.6 75.3 174.9 43.2 20.1 40.1 11.6 18.0& 0.0& 65.3& 783.1& 0 1997/98 57.9 40.4 17.6 72.4 201.0 137.3 30.0 10.8& 0.0& 5.2& 0.0& 15.0 49.0& 587.6& 0 1998/99 39.4 86.3 46.4 117.3 91.1 44.4 40.4 75.4 5.4 0.4& 0.0& 0.4 45.6& 546.9& 0 1999/ 0 24.8 20.1 129.7 137.5 117.8 102.6 62.0 18.3 4.6 0.6 0.1 91.4 59.1 709.5 0 2000/ 1 38.2 72.0 75.5 29.8 102.1 98.6 163.7 33.2 29.2 0.3 25.4 20.1 57.3 688.1 0 2001/ 2 76.0 182.4 104.4 111.3 34.8 39.0 28.9 83.1 4.4& 0.0& 73.5 21.7 63.3& 759.5& 0 2002/ 3 14.5 11.4 84.4 68.6 37.9 117.9 11.5 16.2 0.0 0.0 10.0 14.0 32.2 386.4 0 2003/ 4 22.3 42.0 60.1 46.6 45.8 141.2 54.7 1.9 6.5 0.7 25.4 35.2 40.2 482.4 0 2004/ 5 18.8 34.0 32.2 89.2 89.9 103.9 30.9 35.4 9.6 0.0 3.4 0.0 37.3 447.3 0 122 Tot ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... & ... Monthly Reading M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2E007 Welbedacht @ Welbedacht Dam Site D2E007 Variable 10.00 Total Rainfall in Millimetres Figures are for period starting 800 hours. Mean Annual Missing Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Monthly Total Days 2005/ 6 59.3 57.8 4.4 177.7 233.3 109.7 97.2 25.0 0.0 0.0 77.5 2.7 70.4 844.6 0 2006/ 7 43.6 106.7 54.1 18.6 16.1 31.9 58.6 0.0 21.0 0.0 4.0 58.0 34.4 412.6 0 2007/ 8 21.0 81.7 97.4 97.1 65.8 65.7 31.2 16.0 54.6 0.0 2.0 0.0 44.4 532.5 0 2008/ 9 0.0 77.6 16.1 45.5 157.1 5.4 40.0 18.1 26.9 17.0 2.0 0.0 33.8 405.7 0 2009/10 185.6 91.8 21.8 199.7 24.4 77.0Q 58.4Q 15.0Q 28.2Q [ ]M [ ]M [ ]M [78.0] [701.9] 92 122 Tot Mean [59.1] 66.3& 72.1& 96.6& 118.0& 85.7& 51.0& 20.6& 15.2& 8.6& 23.4& 31.4& [54.4] [646.6] Mean Med. [50.5] 64.8& 69.3& 77.6& 90.0& 76.8& 40.2& 15.5& 6.3& 0.6& 9.2& 17.0& Med. Max [204.8] 182.4& 230.0& 294.5& 614.6& 259.4& 163.7& 83.1& 60.0& 68.0& 121.8& 174.0& [125.0] [1499 ] Max Min [0.0] 4.3& 4.4& 3.8& 16.1& 5.4& 0.0& 0.0& 0.0& 0.0& 0.0& 0.0& [31.9] [383.0] Min OK 98% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% OK Cnt 40 40 40 40 40 40 40 40 40 39 39 39 40 40 Cnt ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... & ... Monthly Reading M ... Missing Data Q ... Data Not Audited