Thursday, April 3, 2025

NASA’s Superb Theewaterskloof Dam Time-Lapse Shows Remarkable Recovery [Videos]

At the height of the Day Zero panic, barren images of Theewaterskloof Dam were everywhere. NASA's here to inject a little hope.
VILLIERS, SOUTH AFRICA - JANUARY 15, 2018: Cape Town’s main supply reservoir, Theewaterskloof Dam, dips to 15.5% capacity. The reservoir was designed to fail at 10% – the lowest level at which water is still accessible. On Thursday, February 22, 2018 it dropped to 10.84%. A temporary coffer dam was built inside Theewaterskloof dam to pool the last 10% of supply to be pumped into the canal that feeds the city's water system. Diminishing water supplies led city officials to warn of "Day Zero"—the day when the collect dam levels reach 13.5% and they would have to turn off the taps to the four millions inhabitants of Cape Town and residents would have to queue at 200 water collection points for their daily allotment of water. On January 15, "Day Zero" was expected on April 12, 2018. Photo by Morgana Wingard

[imagesource:here]

It’s been rather fair-weathered these past few weeks, but late June / early July saw some serious Netflix and chill downpours.

The City of Cape Town might be talking about doing away with the 50 litres per day restrictions, but experts have made it clear that the Western Cape is nowhere close to out of the woods.

That being said, the rise and rise of the Theewaterskloof Dam levels have been heartening to watch, and you’ve probably seen a fair few videos and time-lapses of how things have improved.

It’s nice to know that NASA is still paying attention. Their graphics from back in February painted a very worrying picture, but this time around the news is far better.

The South African shared NASA’s effort, so let’s get stuck in:

I have faith in your ability to apply basic logic, so I won’t explain the light blue / dark blue mapping.

Here’s another aerial time-lapse that maps out the past nine or so months:

If you prefer to have your feet planted, this video from Cape Town Live, posted on July 4, is worth a watch:

Makes such a pleasant change from those barren, desert-like images we all saw during the height of the Day Zero panic.

Just remember that 50 litres a day is manageable, and if we’ve become accustomed to using the prescribed amount, why change now?

[source:southafrican]