Dam levels are dropping fast in the Western Cape. PHOTO: Lise Beyers
Levels of dams supplying the Western Cape have increased to 7,5% in a week. Photo: Lise Beyers

Thirsting Western Cape dams jump to 52% as some catchments overflow

Dam levels are dropping fast in the Western Cape. PHOTO: Lise Beyers
Levels of dams supplying the Western Cape have increased to 7,5% in a week. Photo: Lise Beyers

WESTERN CAPE – It has been a dry season by most measures, but nature offered some welcome relief last week when powerful storms swept through the Garden Route and the Central Karoo, lashing the landscape with the kind of rain that fills rivers overnight and sends dry riverbeds rushing back to life.

Then, over the Mother’s Day weekend, the rains extended their reach across the rest of the province, soaking the catchments that feed its most vital reservoirs.

The latest weekly dam level report, issued by the national Department of Water and Sanitation on Monday 11 May, captures exactly what those storms have left behind.

ALSO READ: Western Cape dams show marginal improvement after recent rains, but levels remain well below last year

Theewaterskloof Dam.
Main dams supplying Cape Town, such as the pictured Theewaterskloof Dam, have increased to 50,5% following the recent autumn rainfall. This photo of the dam was taken on 1 May 2026. PHOTO: Lise Beyers

Across the entire province, dam leaves stands at 52,5% full – a meaningful climb from 44,9% last week, with the region visibly drinking in the season’s gifts.

The total net volume held across all dams has reached 981,5 million cubic metres, a figure drawing quiet relief from water managers and farmers alike.

In Cape Town, the city’s combined dam system – fed by the iconic giants of Wemmershoek, Voëlvlei, Steenbras, Theewaterskloof and Berg River – sits at 50,5%, up from 47,8% just a week ago. The memory of Day Zero still lingers in the city’s collective psyche and every percentage point gained feels like a small victory. 

Theewaterskloof, the region’s largest reservoir, has edged to 49,5% after soaking up 65 mm of rainfall in the past seven days.

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But it is in the Gouritz River Catchment where the most dramatic scenes are unfolding – and it is no surprise, given the ferocity of last week’s storms. The dam system there has surged to an extraordinary 88,8% full, up sharply from 52,2% just last week. 

Stompdrift, Kammanassie, and Gamkapoort have all burst past 100% capacity, their spillways roaring with water they can barely contain. Little Gamkadam, sitting quietly at just 16,5% last week, is now suddenly at 100,25% – a transformation almost too remarkable to believe, yet entirely consistent with the deluge that tore through the Karoo in recent days.

Further north, the Olifants/Doorn River Catchment paints a more sober picture. At only 25,9% full, the dams there – including Clanwilliam at a modest 23,3% – serve as a reminder that the Western Cape is a land of contrast, where abundance and thirst can exist side by side.

The Misverstand Dam in the Berg River Catchment is already overflowing at 116,9%, its waters spilling freely – a joyful overflow that farmers downstream are sure to welcome.

Nearby, Wemmershoek and Berg River Dam have both climbed above 50%, inching toward the comfort zone water authorities hope to sustain through the dry summer months ahead.

These numbers whisper a cautious optimism, but the Western Cape is not yet out of the woods despite the recent rains having made their mark.

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