| Station: | Aliwal North | Continent: | Africa | ||
| River: | Orange | Major Basin : | Orange | ||
| Country: | South Africa | Discharge into : | Atlantic Ocean | ||
| Observation Period: | 1964 - 1986 | Total Months: | 258 | ||
| Latitude (dec deg): | 30.65 S | Area (km2): | 37075 | ||
| Longitude (dec deg): | 26.69 E | Elevation (m): | |||
| Annual Discharge: (m3/s): | 143.5 | (km3/yr): | 4.6 | ||
| Annual Runoff: (l/s/km2): | 3.9 | (mm/yr): | 122.7 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 219.6 | 364.3 | 259.6 | 160.3 | 88.6 | 58.6 | 28.4 | 41.9 | 55.8 | 140.1 | 160.9 | 169.9 |
| km3/mo | 0.6 | 0.9 | 0.7 | 0.4 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.4 | 0.4 | 0.5 |
| mm/mo | 15.9 | 23.8 | 18.8 | 11.2 | 6.4 | 4.1 | 2.1 | 3.0 | 3.9 | 10.1 | 11.2 | 12.3 |
| l/s/km2 | 5.9 | 9.8 | 7.0 | 4.3 | 2.4 | 1.6 | 0.8 | 1.1 | 1.5 | 3.8 | 4.3 | 4.6 |
