Activating the Chobe-Zambezi Transfer

One possible future infrastrucutre intervention is the Chobe-Zambezi transfer. This transfer would take water from the Chobe River and transfer it into the North South Carrier System which would transfer the water to the Gaborone Demand Centre. Part of this transfer would

1. Clone the Baseline scenario and name it 'Chobe'

1. Change the max_flow of the Chobe-Zambezi River input node to 1.356 Mm3/day

The Chobe-Zambezi transfer would also provide water to an agricultural scheme. Change the max_flow of the Agr-Zambezi output node which represents the scheme to 0.536 Mm3/day.

1. Run the Chobe scenario.

1. Click on the Gaborone Demand Centre (DC) output node and view its simulated_flow.

Add the Baseline scenario to the plot to compare to the baseline scenario. Remember to press .

The Gaborone DC experiences deficits less frequently when the Chobe-Zambezi transfer is active than in the baseline scenario (orange scenario below).

Click on the Gaborone Reservoir node and view its simulated_volume and compare against the Baseline scenario.

In general the Gaborone reservoir stays at a higher volume when the Chobe-Zambezi transfer is active as compared to the Baseline scenario.

The Chobe-Zambezi transfer helps reduce deficits and increase storage volumes in the Gaborone reservoir however there are still deficits and the reservoir never fully fills.

Under this climate change scenario and high demand level, the Chobe-Zambezi transfer is not enough to maintain good performance.

Please note that this scheme was modelled as a constant yield as modelling the hydrology of the Chobe river was beyond the scope of the study.