Results
| Country: | South_Africa
| | Station: | AliwalNorth | | River: | Orange | | Area: | 37075 km2 | | Lat: | -30.65 | | Lon: | 26.69 | | Source: | RivDIS | | PointID: | 1453 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1964 | | Ending Year: | 1986 | | Total Years: | 23 | | Total Usable Years: | 21 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1964 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | 426 | 197 | -9999 | -9999 |
| 1965 | 95.1 | 56.3 | 4.42 | 86.4 | 26.1 | 17 | 33 | 38.8 | 99.1 | 63.1 | 86.2 | 20 | 52.13 |
| 1966 | 501 | 622 | 30.9 | 16.7 | 12.4 | 7.09 | 2.75 | 2.96 | 4 | 22.5 | 54.1 | 81.3 | 113.14 |
| 1967 | 165 | 1113 | 240 | 573 | 210 | 345 | 77.8 | 39.3 | 31.5 | 10.2 | 190 | 83.9 | 256.56 |
| 1968 | 28 | 14.6 | 39.4 | 65.5 | 174 | 33.5 | 39.6 | 12.9 | 42.8 | 21.8 | 23.7 | 209 | 58.73 |
| 1969 | 19.3 | 74.2 | 411 | 268 | 47.3 | 34.6 | 7 | 15.5 | 2.56 | 111 | 101 | 56.3 | 95.65 |
| 1970 | 77.1 | 110 | 15 | 6.76 | 3.64 | 2.93 | 4.12 | 8.81 | 46.2 | 216 | 112 | 233 | 69.63 |
| 1971 | 211 | 232 | 116 | -9999 | 169 | 34.1 | 20.1 | 21.4 | 15.4 | 17.3 | 50.8 | 76.8 | -9999 |
| 1972 | 392 | 720 | 621 | 122 | 130 | 53.6 | 19.8 | 7.63 | 4.21 | 46.7 | 78.2 | 30.5 | 185.47 |
| 1973 | 17 | -9999 | -9999 | 96.5 | 12.5 | 3.25 | 4.74 | 78.8 | 52.1 | 61.2 | 49.2 | 85.3 | -9999 |
| 1974 | 603 | 1047 | 550 | 253 | 167 | 99.8 | 49.5 | 168 | 86.4 | 26.1 | 361 | 242 | 304.4 |
| 1975 | 165 | 517 | 470 | 86 | 44.2 | 28.9 | -9999 | 18.7 | 58.3 | 158 | 292 | 458 | -9999 |
| 1976 | 785 | 1008 | 1286 | 410 | 369 | 185 | 67 | 35.4 | 51.5 | 909 | 552 | 80.8 | 478.23 |
| 1977 | 102 | 437 | 565 | 99.6 | 58 | 27.6 | 21.2 | 14 | 38.9 | 230 | 149 | 70.3 | 151.05 |
| 1978 | 423 | 197 | 122 | 628 | 101 | 33.8 | 23.9 | 19.1 | 118 | 111 | 61.4 | 480 | 193.18 |
| 1979 | 92.3 | 127 | 116 | 21.6 | 22.9 | 21.1 | 59.2 | 217 | 173 | 267 | 93.7 | 175 | 115.48 |
| 1980 | 120 | 160 | 131 | 33.4 | 10.6 | 11.4 | 9.29 | 8.06 | 11.7 | 65.7 | 48.6 | 149 | 63.23 |
| 1981 | 331 | 378 | 238 | 85.2 | 91.6 | 185 | 30.3 | 130 | 183 | -9999 | 84.1 | 200 | -9999 |
| 1982 | 68.2 | 97.2 | 91.5 | 295 | 107 | 41.7 | 40.1 | 21.6 | 11.6 | 73 | 450 | 48 | 112.08 |
| 1983 | 17.6 | 29.1 | 24.9 | 32.5 | 35.7 | 35.7 | 46.9 | 39.2 | 19.6 | 43.1 | 70.9 | 243 | 53.18 |
| 1984 | 333 | 48.5 | 56.5 | 83.4 | 115 | 22.3 | 13.7 | 12.2 | 60.3 | 32.1 | 95.2 | 70.6 | 78.57 |
| 1985 | 82.7 | 421 | 223 | 63.1 | 16.7 | 20.6 | 11 | 3.46 | 1.54 | 32.3 | 340 | 476 | 140.95 |
| 1986 | 203 | 237 | 101 | 40.6 | 26.1 | 44.7 | 16.4 | 9.87 | 115 | -9999 | -9999 | -9999 | -9999 |
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| Avg | 219.6 | 364.09 | 259.65 | 160.3 | 88.62 | 58.58 | 28.45 | 41.94 | 55.76 | 140.15 | 160.91 | 169.94 | 148.33 |
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| Std Dev | 205.01 |
343.31 |
299.47 |
175.95 |
86.81 |
79.18 |
21.23 |
55.71 |
51.9 |
200.15 |
142.49 |
141.21 |
108.3 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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