Department of Water Affairs, Namibia HYMONTH V86 Output 29/07/2010 Site 0786865 Witvlei Site 0786865.RN 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 1939/40 [ ] [ ] [ ] 139.9 9.4 117.6 30.7 0.0 0.5 0.0 0.0 3.0 [33.5] [301.1] 92 1940/41 0.0 0.0 47.7 28.5 0.0 13.6 25.6 0.0 0.0 [ ] 0.0 0.0 [10.5] [115.4] 31 1941/42 18.3 0.0 24.2 0.0 152.7 99.4 79.8 0.3 0.0 1.5 0.0 2.0 31.5 378.2 0 1942/43 27.7 24.8 113.7 41.6 63.0 31.4 53.4 0.0 0.0 0.0 4.1 0.0 30.0 359.7 0 1943/44 0.0 60.2 149.1 153.0 43.9 26.9 0.0 0.0 0.0 0.0 [ ] 1.5 [39.5] [434.6] 31 1944/45 7.9 48.2 0.0 9.2 17.0 4.8 48.5 0.0 0.0 0.0 0.0 0.0 11.3 135.6 0 1945/46 0.0 65.4 85.9 2.5 21.6 16.7 9.9 0.0 0.0 0.0 0.0 0.0 16.8 202.0 0 1946/47 0.0 15.3 18.1 45.0 45.9 27.5 25.4 0.0 1.5 0.0 0.0 0.0 14.9 178.7 0 1947/48 10.7 0.0 22.7 29.5 71.4 52.3 7.4 10.9 0.0 1.5 0.0 0.0 17.2 206.4 0 1948/49 0.8 55.9 6.9 112.1 36.3 187.9 15.2 0.0 0.0 0.0 0.0 0.0 34.6 415.1 0 1949/50 8.9 8.2 20.0 83.3 97.1 106.1 96.8 18.3 0.0 0.0 6.4 15.2 38.4 460.3 0 1950/51 0.0 18.0 85.4 19.5 38.6 32.0 100.0 26.2 0.0 0.0 0.0 4.8 27.0 324.5 0 1951/52 24.9 24.4 18.8 28.4 131.2 9.7 4.0 0.0 30.7 0.0 0.0 1.8 22.8 273.9 0 1952/53 33.3 43.7 56.1 53.4 120.7 90.0 17.3 11.8 0.0 0.0 0.0 0.0 35.5 426.3 0 1953/54 46.0 17.0 71.1 45.0 123.0 119.0 33.0 0.0 0.0 0.0 0.0 14.8 39.1 468.9 0 1954/55 46.0 22.0 99.5 54.8 103.5 54.0 37.5 0.0 19.0 0.0 0.0 0.0 36.4 436.3 0 1955/56 26.0 48.0 25.2 101.6 51.1 59.6 15.5 0.0 0.0 0.8 0.0 5.0 27.7 332.8 0 1956/57 2.0 29.7 27.9 87.3 56.0 44.7 6.0 5.5 0.0 12.0 0.0 25.0 24.7 296.1 0 1957/58 16.0 62.0 41.5 83.5 67.5 42.0 0.0 0.0 0.0 0.0 0.0 0.0 26.0 312.5 0 1958/59 0.0 0.0 9.5 23.5 55.5 36.5 10.5 0.0 0.0 0.0 0.0 0.0 11.3 135.5 0 1959/60 0.0 36.5 6.5 34.0 268.5 10.0 9.5 17.0 0.0 0.0 0.0 0.0 31.8 382.0 0 1960/61 0.0 41.5 3.5 10.0 22.0 37.5 61.5 13.0 19.0 0.0 0.0 0.0 17.3 208.0 0 1961/62 0.0 37.1 16.0 0.0 124.8 0.0 36.0 0.0 0.0 0.0 6.0 0.0 18.3 219.9 0 1962/63 22.1 22.0 0.0 188.9A 0.0 31.5 65.6 4.0 0.0 0.0 0.0 0.0 27.8A 334.1A 0 1963/64 34.0 168.6 6.6 18.1 5.5 47.0 19.5 0.0 0.0 0.0 0.0 0.0 24.9 299.3 0 1964/65 20.5 19.0 13.5 36.5 21.0 27.8 59.5 0.0 0.0 0.0 0.0 0.0 16.5 197.8 0 1965/66 5.0 9.0 9.5 143.0 97.0 0.0 0.0 0.0 0.0 0.0 0.0 50.1 26.1 313.6 0 1966/67 0.8 0.0 81.0 110.0 150.0 40.0 0.0 0.0 0.0 0.0 0.0 0.0 31.8 381.8 0 1967/68 0.0 26.5 61.0 13.5 10.0 162.0 34.0 44.5 1.0 0.0 0.0 0.0 29.4 352.5 0 1968/69 4.0 86.5 13.5 37.5 91.5 48.0 20.0 0.0 0.0 0.0 0.0 0.0 25.1 301.0 0 1969/70 0.0 48.0 0.0 63.7 76.0 7.0 21.5 0.0 0.0 0.0 0.0 0.0 18.0 216.2 0 1970/71 46.5 0.0 113.0 67.7 100.6 63.0 33.0 0.0 0.0 0.0 0.0 0.0 35.3 423.8 0 1971/72 5.5 3.5 0.0 106.0 0.0 80.0 95.0 0.0 0.0 0.0 0.0 0.0 24.2 290.0 0 1972/73 0.0 26.5 0.0 8.0 121.5 82.5 24.5 0.0 0.0 0.0 0.0 0.0 21.9 263.0 0 1973/74 55.5 28.0 123.5 120.5 187.0 67.5 35.5 0.0 11.0 0.0 0.0 7.0 53.0 635.5 0 1159 Tot ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... A ... Accumulated Data [ ] Data Not Recorded Department of Water Affairs, Namibia HYMONTH V86 Output 29/07/2010 Site 0786865 Witvlei Site 0786865.RN 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 1974/75 3.0 25.0 10.5 26.5 56.0 171.5 13.0 23.0 0.0 0.0 0.0 0.0 27.4 328.5 0 1975/76 0.0 4.5 0.9 145.3 152.0 112.6 24.5 1.0 0.0 0.0 0.0 0.3 36.8 441.1 0 1976/77 1.5 31.5 9.5 32.0 128.9 108.5 103.0 10.0 0.0 0.0 0.0 0.0 35.4 424.9 0 1977/78 31.0 17.7 53.5 213.5A 306.3 21.8 25.5 0.0 0.0 0.0 3.5 0.5 56.1A 673.3A 0 1978/79 2.0 22.6 12.6 136.7 181.2 1.0 4.2 19.2 0.0 0.0 0.0 0.0 31.6 379.5 0 1979/80 37.3 26.5 36.7 19.8 163.0 60.0 10.5 0.0 0.0 0.0 0.0 33.5 32.3 387.3 0 1980/81 0.0 36.0 49.0 12.5 21.0 42.8 30.5 0.0 0.0 0.0 1.5 0.0 16.1 193.3 0 1981/82 3.5 72.0 12.5 45.5 44.9 38.0 22.5 0.0 0.0 0.0 0.0 0.0 19.9 238.9 0 1982/83 9.0 48.0 95.5 59.0 0.0 62.0 28.0 2.5 4.0 0.0 0.0 0.0 25.7 308.0 0 1983/84 0.3 71.6 106.5 13.0 22.5 28.5 73.0 1.0 0.0 0.0 0.0 0.0 26.4 316.4 0 1984/85 22.0 27.0 0.0 29.5 40.5 43.0 30.5 0.0 0.0 0.0 0.0 0.0 16.0 192.5 0 1985/86 29.1 48.7 16.5 74.7 47.3 64.5 34.7 0.0 0.0 0.0 0.0 0.0 26.3 315.5 0 1986/87 31.8 7.2 21.5 6.5 121.0 2.0 98.0 0.0 0.0 0.0 0.0 0.0 24.0 288.0 0 1987/88 11.2 10.7 19.3 132.8 54.0 13.8 61.2 0.0 0.0 0.0 0.0 0.0 25.3 303.0 0 1988/89 6.5 8.3 51.9 147.5 65.5 0.0 15.4 2.0 0.0 0.0 0.0 0.0 24.8 297.1 0 1989/90 0.0 0.0 0.0 60.1 30.5 60.4 44.1 0.0 0.0 0.0 0.0 0.0 16.3 195.1 0 1990/91 1.5 42.0 75.1 179.2 187.5 22.0 [ ] [ ] [ ] [ ] [ ] 27.0 [76.3] [534.3] 153 1991/92 [ ] 20.0 95.5 0.0 7.7 12.0 2.3 0.0 0.0 0.0 0.0 0.8 [12.6] [138.3] 31 1992/93 27.7 14.0 17.0 42.7 214.0 8.0 43.2 0.0 0.0 0.0 0.0 0.0 30.6 366.6 0 1993/94 74.4 49.5 27.5 223.0 22.5 17.3 30.0 0.0 0.0 0.0 0.0 0.0 37.0 444.2 0 1994/95 1.5 14.0 5.0 8.5 23.3 33.5 1.5 0.0 0.0 0.0 0.0 0.5 7.3 87.8 0 1995/96 8.5 5.7 19.0 63.2 27.0 0.0 10.2A 0.0 0.0 0.0 0.0 0.0 11.1A 133.6A 0 1996/97 0.0 17.1 104.5 267.6 68.2 155.5 2.0 21.5 0.0 0.0 0.0 41.5 56.5 677.9 0 1997/98 27.3 1.0 25.0 122.5 24.5 74.7 19.0 0.0 0.0 0.0 0.0 0.0 24.5 294.0 0 1998/99 11.0 38.0 5.0 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [18.0] [54.0] 273 1999/ 0 [ ] [ ] [ ] 83.5 167.5 60.0 42.0 [ ] [ ] [ ] [ ] [ ] [88.2] [353.0] 245 2000/ 1 2.0 [ ] 5.0 [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [ ] [3.5] [7.0] 303 1159 Tot Mean 13.6 29.7 37.4 70.7A 79.3 51.5 32.2A 4.0 1.5 0.3 0.4 4.0 [28.0] [312.7] Mean Med. 5.5 24.8 19.7 49.4A 56.0 41.0 25.5A 0.0 0.0 0.0 0.0 0.0 Med. Max 74.4 168.6 149.1 267.6A 306.3 187.9 103.0A 44.5 30.7 12.0 6.4 50.1 [88.2] [677.9] Max Min 0.0 0.0 0.0 0.0A 0.0 0.0 0.0A 0.0 0.0 0.0 0.0 0.0 [3.5] [7.0] Min OK 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% OK Cnt 59 59 60 60 60 60 59 58 58 57 57 59 62 62 Cnt ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... A ... Accumulated Data [ ] Data Not Recorded