Numerous irrigation canal networks in the Lowveld, which were built in the 1950s and 1960s, have now reached the end of their lifespans. The deterioration of these canals poses severe water-loss challenges and MBB is spearheading the revitalisation of these crucial irrigation systems.

The Sand River Canal Distribution System, located west of White River, Mpumalanga, is one such irrigation canal network. It comprises a total length of 29,6 km and serves an area of 1 540 hectares. The canal system, which was built in the early 1950s, is incurring significant hydraulic and increased seepage losses and is in urgent need of rehabilitation.

Building upon the recommendations of an initial investigation, the Sand River Irrigation Board commissioned MBB to execute the upgrade of a section of the canal, including the following:

• Constructing a new 208 m long section of parabolic concrete-lined canal.
• Installing a 270 m long 355 mm diameter mPVC siphon pipe.
• Establishing inlet and outlet structures, valve chambers, and scour chambers.
• Incorporating an open channel flow meter for the canal and an electromagnetic water meter for the siphon pipe.

MBB was entrusted with the responsibility to undertake the following tasks:

• Detailed design, the preparation of construction drawings, and creating a bill of quantities.
• Managing the tender process and appointing contractors.
• Providing construction supervision and overall project management.

The success of projects like this depends on a comprehensive system design, requiring a combination of civil and agricultural engineering expertise, as well as a high level of workmanship and project management during the construction phase.

While the project is still in progress, MBB has demonstrated exceptional competence and commitment, instilling confidence in the successful outcome of this project.