Orange river flood forecast
GloFAS reads the Orange at 2 places, from Upington, where it drains 355,574 km², down to Vioolsdrif, where it drains 790,178 km². It is read in South Africa and Namibia. For each point, the Global Flood Awareness System gives the chance that the river will exceed the flow it normally reaches only once every 2, 5 or 20 years.
GloFAS rates the Orange Inactive at both points GloFAS reads.
GloFAS forecasts are computer model output, published for information only. They are not a flood warning: only national and regional authorities issue flood warnings for their own area. A reporting point is a place on the model's river network, which may sit a few kilometres from the town it is named after.
Every point GloFAS reads on the Orange
Upington, South Africa · drains 355,574 km²
No chance of exceeding even its 2-year flood flow in this forecast.
GloFAS alert level: Inactive · Peak expected: as currently ongoing · Falling
Vioolsdrif, Namibia · drains 790,178 km²
No chance of exceeding even its 2-year flood flow in this forecast.
GloFAS alert level: Inactive · Peak expected: as currently ongoing · Falling
Nothing has been reported within 100 km of this river in the last 30 days by the agencies this site follows.
What a 2-, 5- or 20-year flood flow is
It is the river flow that, at that point, is reached or exceeded on average once every 2, 5 or 20 years. A 2-year flow typically fills the channel to its banks; a 5-year or 20-year flow goes further. It measures how unusual the flow is, not what it will damage — the same flow can flood a town that has no defences and pass one that does. And "once in 20 years" is an average: two can come in a row.
Contains modified Copernicus Emergency Management Service information 2026 — the Global Flood Awareness System (GloFAS). GloFAS.