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Projects Restoring Land and Water

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Projects Restoring Land and Water 12 LAND MANAGEMENT Projects Restoring Land and Water With no vegetation to protect it soil is washed away and lands up in the canals and dams that make up the Tugela-Vaal water transfer scheme. In a sleepy hollow in the foothills of the Drakensberg, in KwaZulu-Natal, local communities are not only learning to take care of their own land and water resources, but are also contributing to the protection of one of Gauteng’s economic lifelines – the Tugela-Vaal water transfer scheme. he communities of Mnweni and to several thousand people who Okhombe form part of the make a living from raising livestock TAmangwane tribal authority in and subsistence farming, with little to the northern Drakensberg area of no access to basic services. How- KwaZulu-Natal. Situated between the ever, years of overgrazing and inap- formal conservation areas of Cathe- propriate land management practices dral Peak and Royal Natal National have degraded parts of the land- Park the area is unique in that it is scape. one of the few so-called ‘high Berg’ areas that are highly populated. Dr Terry Everson of the University of Being part of the uThukela catchment Natal in Pietermaritzburg has been it is also a crucial source of water to involved in land rehabilitation projects the country as a whole. One of the in Mnweni and Okhombe for the last largest water transfer schemes in ten years. Her programme, supported South Africa, the Tugela-Vaal, is by institutions such as the Farmer situated here. This scheme provides Support Group, CSIR, Department of valuable water to South Africa’s Agriculture and KZN Wildlife, also aims economic hub, Gauteng, through a to build capacity within the local com- series of dams, canals and pipelines. munities to manage their land and water resources better. The Okhombe community forms part DEGRADED ENVIRONMENT of the Amangwane tribal authority in Scattered huts along the foothills of Dr Everson explains that when live- the northern Drakensberg area of the majestic Drakensberg are home stock such as cattle and goats are KwaZulu-Natal. The Water Wheel March/April 2005 LAND MANAGEMENT 13 allowed to eat too much of the veg- etation in an area the water does not MORE ABOUT THE TUGELA-VAAL infiltrate properly into the ground WATER TRANSFER SCHEME when it rains. This leads to increased water runoff and soil erosion. Huge dongas have already formed in the area. “The most challenging aspect of this project is changing people’s mindsets.” The communities do not only lose land that could be used for food production. Huge loads of silt also lands up in the rivers of the catch- ment and get washed into the dams that make up the Tugela-Vaal water n the early 1960s it was determined that the capacity of the Vaal Dam transfer scheme, such as Woodstock Iwould not be sufficient to cater for the water needs of Gauteng. This Dam and Sterkfontein Dam. This silt resulted in the development of the Tugela-Vaal scheme, which was com- not only reduces the capacity of the pleted in 1974. storage reservoirs, but is expensive to remove. With the construction of the transfer scheme, a certain amount of water from the Tugela River, which starts at Mont Aux Sources, in the REHABILITATING THE LAND Drakensberg, is transferred via canals, pipelines and dams into the Vaal “To restore some of these degraded River system. sites we have trained people from the community in the implementation of a The Tugela River flows into the Woodstock Dam and then into the Driel number of different erosion control Barrage further downstream. A certain amount of water is pumped from the techniques,” explains Dr Everson. Driel Barrage into canals which then flow via gravity into the Kilburn Dam. This includes putting physical struc- Water from the Kilburn Dam is then pumped underground, over the tures such as placing stone packs Drakensberg and into the Driekloof Dam. inside the dongas, stone lines, swales and cattle steps. Community mem- This section of the scheme is used to generate electricity. Eskom built a bers have also been assisted in plant- hydroelectric power station in the Drakensberg mountain called the ing vegetative structures such as Drakensberg Pumped Storage Scheme. When electricity is needed water is vetiver grass planted on contour lines, dropped from the Driekloof Dam, through hydroelectric turbines, and into trees planted in micro catchments and the Kilburn Dam. Then in quite periods the water is pumped back from the indigenous and exotic grasses planted Kilburn Dam and into the Driekloof Dam. on eroded slopes to improve water infiltration and reduce soil erosion. When the Driekloof Dam is full water flows over a weir and into the Sterkfontein Dam where it is stored. Incidentally, when the Sterkfontein Dam Dr Everson’s team are not the only was completed in 1986, it was the world’s second-largest earth wall and the ones looking to restore the area to its largest without a spillway. The dam has a surface area of 67 km2, an aver- former beauty. Rand Water has been age depth of 93 m and a total storage capacity of 2,62 billion cubic metres. involved in Mnweni since 1996. “At one stage, prior to the establishment When water is needed in the Vaal River system, water is released from the of the Lesotho Highlands Water Sterkfontein Dam and into the Nuwejaarspruit, which then flows into the Project, Gauteng, which is our main Wilge River and then into the Vaal Dam. supply area, was drawing 10% of its total bulk water supply from the Source: Rand Water Tugela-Vaal scheme. In addition, The Water Wheel March/April 2005 14 LAND MANAGEMENT procedures, guide training and the use of maps and the global position- ing system have been undertaken. The project aims to increase sustain- able employment opportunities in Mnweni by 25% over the next five to ten years. CASH BOOST Another exciting development is that Rand Water launched a new project in the Mnweni area in April. Aimed specifically at addressing land reha- bilitation and introducing improved Overgrazing and inappropriate agricultural practices have led to increased land management techniques at a runoff and loss of soil, resulting in huge dongas in some areas of the large scale, the project will be under- catchment. taken over the next two years with initial funding of R5,5-million. Impor- tantly, the project will not only aim to rehabilitate degraded pieces of land, but also proactively eliminate degra- dation by introducing new farming techniques. Education and training will be the main components of the new project. “The most challenging aspect of this project is changing people’s mindsets,” explains Nxumalo. “Peo- ple have been farming in the same way for hundreds of years. In a sense they have to be ‘retaught’ in new ways that will not only safeguard their environment, but improve their in- come.” The Tugela River. To replace lost indigenous vegetation it is envisaged that an indigenous many of the communities here were established with an initial capital nursery will be established boosting relocated when the dams for the investment of R2-million from Rand economic development in the area. transfer schemes were built. Thus we Water. Apart from initiating revege- Another initiative is to replace the feel an obligation to assist the com- tation plans that focused on the traditional ox-drawn sledge, which munities in this area to improve land planting of vetiver grass, the trust causes a lot of environmental dam- management and contribute to pov- also developed the Mnweni Valley age, with a friendlier horse-drawn erty alleviation and economic devel- Cultural and Hiking Centre to pro- solution. opment,” says Rand Water project mote ecotourism in the area. manager Arul Moodley. MONITORING AND Rand Water community relations EVALUATION The Rand Water Mnweni Trust was manager Aubrey Nxumalo reports Do these rehabilitation initiatives launched in 1999 as a joint effort that training of community members really work? To monitor and evaluate between the water utility, the Wildlife in skills development workshops the work that has been done on and Environment Society of South ranging from eco- and community- Okhombe the Water Research Africa, Bergwatch and the communi- based tourism, conservation and visit Commission is sponsoring a ties of Amangwane. The trust was management to mountain safety community-participative project The Water Wheel March/April 2005 LAND MANAGEMENT 15 under leadership of Dr Everson. “To assess which techniques have been successful in reducing runoff and soil erosion, it is necessary to monitor and evaluate the project activities,” she explains. “This will enable the communities to make decisions on technologies that are sustainable.” One of the aims of the project is to implement participatory monitoring whereby the rural participants record and analyse differences and change. A total of 17 community members, who now form the Okhombe Monitor- ing Group (OMG), have been trained in assessing the rehabilitation tech- Weirs are one of the monitoring techniques used by the Okhombe niques. Simple techniques are used Monitoring Group. to monitor soil erosion. Each tech- nique is used on an eroded and In each sub-ward rainfall is measured According to Dr Everson, the use of rehabilitated site so that the two can with rain gauges. Donga profiles are these techniques allows the commu- be compared. For example, basal measured to determine sediment nities themselves to determine the cover is determined using a square deposited in the dongas. In addition, effectiveness of the different rehabili- metre quadrant subdivided into 25 square metre run-off plots have been tation techniques on runoff and soil squares. A Morgan splash cup meas- installed and water quality and quan- loss.
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