The huge man-made structure you see before you to the west of GZ is a dam wall constructed by South African civil engineers, contractors and skilled workers that took three years to build and was completed in 2016 at a cost of a little over R1billion. It is the fifth dam to be built in the Mooi-Mgeni system, which already comprised Midmar, Albert Falls, Nagle and Inanda Dams.
Known as the Spring Grove Dam it was built to create a reservoir of much needed water to augment the Mooi-Mngeni System which supplies water to the increasingly thirsty metropolis of eThekwini (Durban)
The construction components included:
• A roller compacted concrete (RCC) dam with an earth embankment;
• A concrete lined spillway
• Three gauging weirs;
• Re-alignment of private access roads that will be inundated by the dam; and
• An artificial fish barrier.
Water from the reservoir behind the dam wall is pumped uphill to Nottingham Road, about 12km away, and then it’s all down-hill into the Indezi River, near Balgowan, and eventually flows into Midmar Dam from whence it is pipelined to the consumers.
To qualify as a finder, answer the following and email to the CO:
• How high do you estimate the dam wall ?
• Is the overflow smooth or stepped ?
• Any idea of the capacity of the dam when full ? In millions of cubic metres.
• A photo (optional)
No answers = possible deletion
Virtual Rewards 2.0 - 2019/2020
This Virtual Cache is part of a limited release of Virtuals created between June 4, 2019 and June 4, 2020. Only 4,000 cache owners were given the opportunity to hide a Virtual Cache. Learn more about Virtual Rewards 2.0 on the Geocaching Blog.
Well done Beetles and Bentleys for the FTF !