This map shows where it needs to rain to fill up the Theewaterskloof, Berg River, Wemmershoek and Steenbras dams. Rain falling inside the green catchment polygons will end up in one of these dams (less water lost to evapotranspiration, infiltration and interception of course). Rain falling outside the catchments won't end up in these dams unless it is somehow pumped there.
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