Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2E010 Knellpoort @ Knellpoort Dam Site D2E010 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 1987/88 [ ]M [ ]M [ ]M [ ]M [ ]M [ ]M [0.0] 26.1 29.4 5.1 1.5 64.7 [21.1] [126.8] 212 1988/89 95.3 22.6 72.1 131.6 189.7 28.5 48.7 30.3 3.0 5.4& 0.0& 16.1 53.6& 643.3& 0 1989/90 8.6 69.1 60.2 38.5 25.0 147.6 54.0 5.0 28.7 3.1 14.9 1.1 38.0 455.8 0 1990/91 1.3 0.4 59.6 161.0 97.8 131.5 1.6 2.5 22.5 8.0& 0.0& 44.5 44.2& 530.7& 0 1991/92 152.2 43.7 79.6 70.0 28.3 29.9 0.8& 0.0& 0.0& 0.0& 27.0 1.0 36.0& 432.5& 0 1992/93 41.0 40.7& 0.0& 136.0 99.8 57.5 86.0 41.0 2.5& 0.0& 31.5 0.0& 44.7& 536.0& 0 1993/94 87.5 79.3 63.5 102.7 156.0 71.7 18.0 1.0 0.5 8.5& 0.0& 0.0& 49.1& 588.7& 0 1994/95 1.0 27.6 9.5 71.0 12.0 105.5 4.5 20.5 3.0& 0.0& 0.0& 16.2 22.6& 270.8& 0 1995/96 30.6 65.2 153.7 109.6 134.9 44.2 71.0 6.8& 0.0& 26.0 14.0 15.6 56.0& 671.6& 0 1996/97 8.3 93.2 92.7 40.0 50.7 155.9 25.0 0.0 25.5 14.0 6.7 2.3 42.9 514.3 0 1997/98 14.0 61.4 0.0 95.5 186.5 79.7 13.0 4.4& 0.0& 8.1 4.5 20.4 40.6& 487.5& 0 1998/99 34.7 81.8 52.4 114.8 62.4 32.4 56.0 29.0 2.3 2.0 0.0 5.3 39.4 473.1 0 1999/ 0 35.9 26.8 217.2 223.0 77.2 54.8 50.0 75.4 6.4 3.0 0.4 58.6 69.1 828.7 0 2000/ 1 26.0 59.5 80.1 52.8 70.0 122.8 101.6 53.4 20.8 11.0 33.2 16.4 54.0 647.6 0 2001/ 2 110.4 159.8 73.7 118.2 102.7 74.8 12.6 65.9 9.0& 0.0& 99.6 9.0 69.6& 835.7& 0 2002/ 3 24.6 9.5 79.5 64.2 23.8 101.3 15.9 14.4 0.0 0.0 8.3 12.8 29.5 354.3 0 2003/ 4 20.2 32.9 43.7 79.0 104.8 93.3 53.9 1.2 4.3 0.0 29.0 41.2 42.0 503.5 0 2004/ 5 29.6 18.1 36.2 63.4 120.8 106.7 37.8 28.8 8.3 0.0 3.0 1.3 37.8 454.0 0 2005/ 6 72.2 74.2 0.1 214.0 183.1 100.2 76.1 22.0 0.0 0.3 91.0 3.4 69.7 836.6 0 2006/ 7 21.8 76.2 63.6 29.5 20.0 39.7 64.5 2.0 38.1 0.0 4.4 22.0 31.8 381.8 0 2007/ 8 39.3 84.4 69.6 148.3 72.8 95.1 28.2 21.6 36.6 0.0 2.8 0.0 49.9 598.7 0 2008/ 9 8.0Q 102.8Q 39.8Q 53.4Q 135.6Q 1.8Q 27.9Q 18.1Q 29.4Q 2.0Q 21.6Q 2.0Q 36.9Q 442.4Q 0 2009/10 129.8Q 102.0Q 45.3Q 142.6Q 36.0Q 110.2Q 42.9Q 9.6Q [ ]M [ ]M [ ]M [ ]M [77.3] [618.4] 122 334 Tot Mean 45.1Q 60.5& 63.3& 102.7Q 90.5Q 81.1Q [38.7] 20.8& 12.3& 4.4& 17.9& 16.1& [45.9] [531.9] Mean Med. 30.1Q 63.3& 61.9& 99.1Q 87.5Q 86.5Q [37.8] 18.1& 5.3& 2.0& 5.6& 10.9& Med. Max 152.2Q 159.8& 217.2& 223.0Q 189.7Q 155.9Q [101.6] 75.4& 38.1& 26.0& 99.6& 64.7& [77.3] [836.6] Max Min 1.0Q 0.4& 0.0& 29.5Q 12.0Q 1.8Q [0.0] 0.0& 0.0& 0.0& 0.0& 0.0& [21.1] [126.8] Min OK 100% 100% 100% 100% 100% 100% 96% 100% 100% 100% 100% 100% 100% 100% OK Cnt 22 22 22 22 22 22 23 23 22 22 22 22 23 23 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