DEPARTMENT OF WATER AFFAIRS AND OF WATER AFFAIRS AND FORESTRY DIRECTORATE NATIONAL WATER RESOURCE PLANNING CROCODILE (WEST) ... water

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  • P WMA 03/000/00/0404

    DEPARTMENT OF WATER AFFAIRS AND FORESTRY

    DIRECTORATE NATIONAL WATER RESOURCE PLANNING

    CROCODILE (WEST) MARICO WATER MANAGEMENT AREA

    INTERNAL STRATEGIC PERSPECTIVE

    FOR

    MARICO, UPPER MOLOPO AND UPPER NGOTWANE CATCHMENTS

    VERSION 1

    February 2004

  • February 2004 Report No. P WMA 03/000/00/0404

    WMA 3 Marico, Upper Molopo and Ngotwane catchments

    REFERENCE

    This report is to be referred to in bibliographies as:

    Department of Water Affairs and Forestry, South Africa. 2004. Crocodile (West) and Marico Water Management Area: Internal Strategic Perspective of the Marico-Upper Molopo & Upper Ngotwane catchments. Prepared by Goba Moahloli Keeve Steyn in association with Golder and Associates and Tlou and Matji (Pty) Ltd. DWAF Report No. P WMA 03/000/00/0404

    INVITATION TO COMMENT

    This report will be updated on a regular basis until the Catchment Management Strategy of Crocodile (West) and Marico Water Management Area eventually supersedes it. Water users and other stakeholders in the Marico, Upper Molopo & Upper Ngotwane catchments and other areas of the WMA are encouraged to study this report and to submit any comments they may have to the Version Controller (see box overleaf).

    ELECTRONIC VERSION CONTROL The report is also available in electronic format as follows:

    DWAF website:

    o Intranet: http://dwaf-www.pwv.gov.za/documents/

    o Internet: http://www.dwaf.gov.za/documents/

    On CD which can be obtained from DWAF Map Office at:

    157 Schoeman Street, Pretoria (Emanzini Building)

    +27 12 336 7813

    mailto:apm@dwaf.gov.za

    or from the Version Controller (see box overleaf)

    The CD contains the following reports (all available on DWAF website)

    Marico, Upper Molopo & Upper Ngotwane catchments Internal Strategic Perspective (This Report) (Report No: P WMA 03/000/00/0404)

    Crocodile (West) Internal Strategic Perspective (Report No. P WMA 03/000/00/0303)

    The National Water Resource Strategy, First Edition

    Crocodile (West) and Marico WMA: Overview of the Water Resources Availability and Utilisation (Report No: P WMA 03/000/00/0203)

    Crocodile (West) and Marico WMA: Water Resources Situation Assessment (Report No: P WMA 03/000/00/0301)

  • February 2004 Report No. P WMA 03/000/00/0404

    WMA 3 Marico, Upper Molopo and Ngotwane catchments

    LATEST VERSION This report is a living document and will be update on a regular basis. If the version of this report is older than 12 months, please check whether a later version is available.

    This can be done on the DWAF website: http://www.dwaf.gov..za/documents/ or by contacting the Version Controller (see box below)

    VERSION CONTROL

    MARICO, UPPER MOLOPO & UPPER NGOTWANE CATCHMENTS

    INTERNAL STRATEGIC PERSPECTIVE

    Version 1 February 2004

    (List of Previous Versions) (Dates)

    Current Version Controller R Botha

    DWAF Gauteng Office

    Private Bag X995

    PRETORIA

    0001

    +27 (0)12 392 1308

    BothaR@dwaf.gov.za

    The most significant amendments included in the latest version will be included here.

  • February 2004 Report No. P WMA 03/000/00/0404

    Internal Strategic Perspectives: WMAs 1 to 4

    WMA 3 Marico, Upper Molopo and Ngotwane catchments Page i

    EXECUTIVE SUMMARY

    The National Water Act (Act No. 36 of 1998) (NWA) is the principal legal instrument relating to water resource management in South Africa. It is now being incrementally implemented. The NWA introduces far-reaching concepts such as the National Water Resource Strategy (NWRS), the first Edition of which will be published in the first quarter of 2004. This NWRS is being progressively developed to set out policies, strategies, objectives, plans, guidelines, procedures and institutional arrangements for the protection, development, conservation, management and control of the countrys water resources.

    The NWA requires that Catchment Management Agencies (CMAs) are established for each Water Management Area (WMA). These CMAs must each prepare a catchment management strategy (CMS) which will guide the management of the water resources of the WMA. This strategy must set out the objectives, plans, guidelines and procedures of the CMA for the sustainable management of the water resources of its WMA to achieve the social and economic benefit of the users without environmental degradation. The strategy prepared by each CMA must not be in conflict with the Department of Water Affairs and Forestry (DWAF) national water resources strategy (NWRS).

    Until CMAs are established, the Regional DWAF has the legal mandate to be the agency for the sustainable water resource management of a WMA. This raises the need for an interim strategy for the management of the water resources of a WMA. The purpose of this report is to document how the Regional DWAF Office is and will undertake the protection, use, development, conservation, management and control of the water resources of the Marico, Upper Molopo and Upper Ngotwane catchments.

    The Marico, Upper Molopo and Upper Ngotwane catchments are part of the Crocodile (West) and Marico WMA. The development of the internal strategic perspective for Crocodile (West) and Marico WMA was done in two parts. The first part was the Crocodile (West) catchments. This was separated from the other catchments of the WMA, i.e. Marico, Upper Molopo and Upper Ngotwane because of the different catchment characteristics and dynamics of the two parts of the WMA as well as the socio-economic structure of the two areas.

    The Marico, Upper Molopo and Upper Ngotwane catchments are situated to the west of the Crocodile (West) catchment and form the boundary with Botswana. The Marico and Upper Ngotwane Rivers are tributaries of the Limpopo River, a major international shared watercourse between Botswana, Mozambique, South Africa and Zimbabwe, while the Molopo River flows into Botswana before joining the Orange River, which forms an international shared watercourse with Namibia (see Figure 1).

    The climate of the catchments of Marico, Upper Molopo and Upper Ngotwane is generally semi-arid and varies from the Marico catchment in the east to the Upper Molopo and Ngotwane in the west. The distribution of the Mean Annual Precipitation (MAP) ranges between 600 and 800mm in the Marico catchment to between 400 and 600mm in the Upper Molopo catchments. The temporal and spatial variability of the rainfall in these catchments are very high. The topography is generally flat with undulating areas in the lower Marico catchment.

  • February 2004 Report No. P WMA 03/000/00/0404

    Internal Strategic Perspectives: WMAs 1 to 4

    WMA 3 Marico, Upper Molopo and Ngotwane catchments Page ii

    Economically the Marico, Upper Molopo and Upper Ngotwane catchments are the poorest in the Crocodile (West) and Marico WMA. The economy is mainly the primary sectors of agriculture on the dolomites of the Upper Molopo and the Marico catchment as well as mining around Zeerust, with some secondary industries such as cement manufacturing at the Slurry. The tourism sector is growing particularly in the lower Marico in the game reserves of Madikwe.

    These catchments do not contribute significantly to the GGP of the North West Province because of lack of beneficiation in the mining sector within the catchments. Commercial agriculture is practised in the Upper Molopo and Marico contributing particularly to income distribution and to some extent to the GGP of the WMA. Unemployment is estimated to be higher than the national average. This is mainly due to cyclical unemployment due to layoffs in the mines resulting in migration from the mines to the rural areas. The overall population in the Marico, Upper Molopo and Upper Ngotwane catchments is estimated to be 539 100 at 1995 level. This is expected to remain stagnant and later decline, although it is forecasted that there will be a population increase in the towns such as Mafikeng and Madikwe due to the push-pull effect.

    The main water user sectors in the three catchments are (i) commercial irrigation farming in all three catchments (ii) urban water use in the main towns of Mafikeng, Zeerust, Groot Marico and Itsoseng and (iii) rural domestic water use. The major water user in the Marico is irrigation (at 32 million m3/a) along the Groot Marico River and the Klein Marico as well as downstream of Marico Bosveld and Klein Maricopoort. This is followed by rural water use of 12 million m3/a. In the Upper Molopo sub-area irrigation and urban water use is the major water user utilising 24 million m3 per annum and 13 million m3 per annum respectively. The sources of supply are the dolomitic aquifers of the Grootfontein compartment and Molopo springs. Irrigated agriculture is the dominant water user in the Upper Ngotwane sub-area (5 million m3/a) followed by rural water use of approximately 3 million m3/a.

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  • February 2004 Report No. P WMA 03/000/00/0404

    Internal Strategic Perspectives: WMAs 1 to 4

    WMA 3 Marico, Upper Molopo and Ngotwane catchments Page iv

    It is expected that there will be an increase in water requirements for the domestic sector, particularly the urban centres of Mafikeng and Madikwe as the population in these areas is expected to increase by an average annual growth of 1,27% and 2,6% respectively. There will also be an increase in water use by the domestic sector as the levels of service increase. Growth in irrigated agriculture is not likely. Land restitution and redistribution will however bring considerable change in the agricultural sector. This