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PROPOSED DEVELOPMENTS

The sizing and location of the MCWAP-related infrastructure takes place within a dynamic planning environment, and changes may occur through interaction and consultation with role-players such as the intended end users of the transferred water, affected landowners, authorities and other stakeholders. The various components of MCWAP are tabulated and illustrated below.

MCWAP Components

Component

Brief Overview

Phase 1

A pipeline parallel to the existing pipeline, to augment the supply from Mokolo Dam. This is to supply in the growing water requirement and also to supply more water for the interim period until a transfer pipeline from the Crocodile River(West) can be implemented. The system will utilise the available yield from Mokolo Dam. Phase 1 consists of the following:

·         Rising main from Mokolo Dam to Wolvenfontein balancing dams;

·         Gravity line from Wolvenfontein to Matimba Power Station; and

·         Gravity line from Matimba Power Station to Steenbokpan.

         

         

Mokolo Dam spillway

Existing pipeline at Rietspruitnek

View of existing pipeline servitude

Phase 2

Transfer scheme from the Crocodile River (West) at Vlieëpoort near Thabazimbi to the Lephalale area via a system consisting of:

·         A weir and abstraction infrastructure, including a balancing reservoir, desilting works, and a high lift pumpstation at Vlieëpoort (near Thabazimbi);

·         Transfer system (approximately 100 km): consisting of three potential pipeline routes for the rising main pipeline, with the preferred route running primarily parallel to the railway line;

·         A Break Pressure Reservoir;

·         An Operational Reservoir; and a

·         Delivery system, consisting of a gravity pipeline (approximately 30km) running from the Operational Reservoir to the Steenbokpan area, connecting to the Phase 1 works.

 

              

         

Proposed weir site

Existing railway line

 

De-bottlenecking

De-bottlenecking of the existing pipeline that stretches from Mokolo Dam to Lephalale, which belongs to Exxaro. This entails the construction of the first 9km of the proposed gravity pipeline (for Phase 1) from Wolvenfontein balancing dams, with interconnections to the existing pipeline. The intention of the de-bottlenecking is to improve the hydraulic gradient at Rietspruitnek, where the existing pipeline passes over a high point .

   

 

         

De-bottlenecking section

 

 

 

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