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The recent rainfall brought significant relief from the protracted period of drought experienced in the Algoa Bay region, with a significant recovery in dam levels to the extent that Kouga Dam recorded its first spilling since 2015. This catchment is of strategic importance to the western parts of Nelson Mandela Bay Metro, Kouga Local Municipality as well as the agricultural sector in the Gamtoos Valley. 

In Week 19 (15 May 2023), the Algoa Water Supply System recorded an accumulative storage level of only 13,3%, with Kouga Dam at 14,57%, Churchill Dam at 24,4%, Groendal Dam at 17,03%, and Impofu Dam at 6,79%. The latest records of this system’s recovery show that the accumulative storage has reached 70%, with Kouga Dam at 101,42%, Churchill Dam at 100,93%, Groendal Dam at 101%, and Impofu Dam at 24,37%. It is anticipated that Impofu Dam’s levels will increase over the next few days since it will benefit from the spilling from Churchill Dam.

The Department’s Water Resource Management Planning processes are based on hydrological trends, hence there will be continuous monitoring of the accumulation of rainfall-generated run-off throughout the remainder of the hydrological year (period of monitoring) in this catchment. Climate experts warned that there are indicators of a strong El Niño developing which could coincide with warmer temperatures and lower rainfall across South Africa (CSIR, 2023).  The full impact of the anticipated El Niño effect is not known hence the Department’s hesitancy to confidently declare that the protracted drought period has ended. The analysis over a longer period will provide for a more accurate climate and hydrological trend.   This analysis will enable a decision to be made in November regarding the annual restrictions to be imposed on the region.

However, in the meantime, the hydrological recovery of the Algoa water supply system has allowed the Department to favourably consider the upliftment of the restrictions for the area. This relaxation of water use will contribute to the economic recovery in the domestic, agricultural, and industrial sectors in the area.

The Department has reviewed the restrictions as follows:

The water restriction on the Kouga/Loerie Sub-System and Groendal Sub-System has been lifted due to improved storage levels in these dams, up until the next decision date, ie, November 2023.

Restrictions in the Kromme Sub-System, comprising of Churchill and Impofu dams and upstream catchment remain in place until the next decision date (November 2023).

Water users are however required to continue using water responsibly and not to exceed water use abstraction allocation volumes. The general public is also encouraged to continue conserving water and to report water leaks. The Algoa water supply system is still under threat of a growing demand that exceeds the yield, which implies that consumption levels are higher than the natural replenishing ability of the water resource system.   

The sensitive nature of this water supply system demands the cooperation of the collective community dependent on this water resource, to continue using water sparingly.

Issued by Department of Water and Sanitation