Home Sci-TechEnvironment South Africa: How Nelson Mandela Bay and Kouga’s Looming Day Zero Water Disaster Could Have Been Prevented

South Africa: How Nelson Mandela Bay and Kouga’s Looming Day Zero Water Disaster Could Have Been Prevented

by
Namibia: Peugeot Will Export 'Once Issues Are Resolved'

The Nelson Mandela Bay Metro and adjacent Kouga Municipality will soon run out of water. Most of their water comes from three dams which are nearly empty and have been for more than a year. Their catchments are degraded by alien tree invasions, overgrazing and wetland destruction. Radical action is needed to restore their functioning — the cost of doing otherwise is beyond contemplation.

Professor Richard Cowling is emeritus professor of ecology at Nelson Mandela University. He is locally and globally recognised for his research on the evolution and conservation of diversity in Cape biomes, the ecological resources that sustained human evolution on the Cape coast, and the restoration of degraded ecosystems. He divides his time between surfing, botanising and thinking about how to dampen the effects of the looming socio-ecological dystopia.

Like most dams in South Africa, the three in the Kromme-Kouga-Baviaanskloof catchments depend on stormflows after floods to fill them up. It’s been 10 years since a dam-filling rainfall event occurred in this region. Disaster has been averted largely through the contribution of small rainfall events and baseflows (the portion of the streamflow that is sustained between rainfall events).

These dry-period flows, the lifeblood of drought-stricken catchments, are…

Source link

related posts

Leave a Comment

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More