The City of Cape Town and the National Department of Water and Sanitation measures dam levels to check how much water is available for the region and whether water restrictions are necessary for residents and businesses. The dam levels are critical for Cape Town’s water supply.

​​​​​Daily levels​​​​​​​

The dams in and around Cape Town form part of the Western Cape Water Supply System, which is an integrated and collectively managed system of dams, pump stations, pipelines, and tunnels. In addition to servicing Cape Town, the system supplies water to towns in the Overberg, Boland, West Coast, and Swartland areas, and provides irrigation water for agriculture.​

See the reading for 29 September 2026.

Current Dam Water Levels - 29/9/2026
Major dams	Storage
	Ml	%
	Capacity when full	29/9/2026
Berg River	130 010	93.9
Steenbras Lower	33 517	49.7
Steenbras Upper	31 767	95.0
Theewaterskloof	480 188	75.9
Voëlvlei	164 095	59.0
Wemmershoek	58 644	88.2
Total Stored Ml	898 221	681 982
% Storage		75.9

Because each dam size is different, the best indicator of overall dam water levels is the total quantity stored expressed as a percentage of total dam capacity. This statistic is shown in the bottom line of the table.​

​​​​​​​​​​​​​​Weekly levels

See the reading for the week 28 September 2026.

Major dams	28/9/2026	Previous week	% 2025
​Berg River	94.0	94.2	99.8
Steenbras Lower	49.5	50.4	97.2
​​Steenbras Upper	96.0	95.0	101.4
Theewaterskloof	76.1	76.8	85.8
​Voëlvlei​	59.0	59.2	102.0
Wemmershoek	88.5	89.5	88.4
Total Stored M​l	683 331	687 898	825 881
% Storage​	76.1	76.6	91.9

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You can also track how much water we have in our main dams supplying our city, compared to this day last week and this day last year. To see a year-on-year comparison, please see our extended weekly water report​.

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Photographer – Bruce Sutherland

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If you would like to find out about dam levels in the rest of the Western Cape or the rest of South Africa, visit the National Department of Water and Sanitation’s weekly dam levels update.