Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R004 Caledon River @ Welbedacht Site D2R004.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 1972/73 [ ]M [ ]M [ ]M [ ]M [ ]M [ ]M [ ]M [ ]M [ ]M [ ]M [52.8] 46.0& [49.4] [98.8] 306 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 20.1L 40.1L 11.6 18.0& 0.0& 65.3L 783.1L 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 33.2L 29.2 0.3 25.4 20.1 57.3L 688.1L 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 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 0 474 Tot ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... $ ... Gauge Plate Readings & ... Monthly Reading L ... Linear Fill M ... Missing Data Q ... Data Not Audited Department of Water Affairs HYMONTH V93 Output 24/08/2010 Site D2R004 Caledon River @ Welbedacht Site D2R004.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 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 0.0Q 33.8Q 405.7Q 0 2009/10 185.6Q 91.8Q 21.8Q 199.7Q 24.4Q 77.0Q [23.0] [ ]M [ ]M [ ]M [ ]M [ ]M [89.0] [623.3] 168 474 Tot Mean 61.2& 69.1& 74.0& 99.3& 118.9& 84.9& [51.3] 19.8L 15.9L 9.4& [24.2] 33.0& [55.6] [642.4] Mean Med. 52.1& 66.5& 74.2& 72.4& 90.1& 76.7& [40.0] 14.0L 6.5L 0.7& [10.0] 20.1& Med. Max 204.8& 182.4& 230.0& 294.5& 614.6& 259.4& [163.7] 83.1L 60.0L 68.0& [121.8] 174.0& [125.0] [1499 ] Max Min 0.0& 4.3& 4.4& 10.6& 16.1& 5.4& [0.0] 0.0L 0.0L 0.0& [0.0] 0.0& [31.9] [98.8] Min OK 100% 100% 100% 100% 100% 100% 99% 100% 100% 100% 100% 100% 100% 100% OK Cnt 37 37 37 37 37 37 37 36 36 36 37 37 38 38 Cnt ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... $ ... Gauge Plate Readings & ... Monthly Reading L ... Linear Fill M ... Missing Data Q ... Data Not Audited