For a view on the current dam levels in the Western Cape, have a look at the below link. Dam levels in the Western Cape are running low.

http://www.capetown.gov.za/Family%20and%20home/residential-utility-services/residential-water-and-sanitation-services/this-weeks-dam-levels

“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.”

A recent article posted that the Calvinia Dam in the Northern Cape has run dry.

http://ewn.co.za/2017/01/05/northern-cape-s-calvinia-dam-runs-dry