On 07/08/2019 23:41, jleikppkywk wrote:




But when the dam is full or close to full, and a mega downpour
is predicted, the normal drain method wont be able to drain
it quickly enough.

Rod that's why we have the overflow.
Its the bit that failed, hence the problems.

It does mean floods downstream as the full amount of water will be going
downstream, but its a reservoir so not a part of a recent flood control
scheme.