AN Assessment 2004 Floods in the Caprivi Region

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AN Assessment 2004 Floods in the Caprivi Region

• S.M. LUYANGA

Department of Water Affairs and Forestry
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Overview of Presentation

• Geographical overview of Basin
• 2004 Flood
• NSC concerns
• Potential Control Measures
• Department of Water Affairs and Forestry

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Geographical Overview of the Basin
Total Area (sq km) 824116 Population Density
2.1 Area in Basin (sq km) 24000 Population
Density Caprivi 5.5 Area in Basin 2.9 2002
Total Population 1 830 330 Population in
Basin 79 826 Population in Basin 4.3
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Assessment of 2004 flood

• The 2004 flood was the highest in 25 years since
  1979, but floods of similar or higher magnitude
  regularly occurred in sixties and seventies.
• Planning ahead should be based on the indication,
  from similar floods in all rivers in the north,
  that we have entered a new period of high floods

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Assessment of 2004 flood(contd)

• Zambezi floodplains between Zambezi River and
  Chobe River, east of Katima Mulilo Ngoma line
  1,500 km2.
• Chobe floodplains west of Ngoma Gate 250 km2.
• Lake Liambezi and extended wetlands to northwest
  50 to 100 km2.

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Assessment of 2004 Floods
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Assessment of 2004 flood
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Lake Lyambezi
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Issues raised by the NSC members Aug 2004

• Flood Control Measures
• Digging a canal from the Zambezi (Schumann burg)
  through the Bukalo channel to Lake Liambezi or
  putting a gate at the Ngoma Bridge.
• River Blockages
• Existence of Dams in upper Zambezi
• Narrowing at Victoria Falls
• National Integration

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HYDROGRAPHIC SKETCH MAP OF LAKE LIAMBEZI
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Potential Flood protection measures

• measures require international cooperation,
• protection by embankments is not feasible due to
  terrain features area is too flat.
• Flood control by storage dams needs
  investigations in Zambia and Angola.

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Flood protection measures (contd)

• Better flood warning by means of more directly
  reporting rainfall and riverflow stations in the
  upper catchment is feasible but will require
  investment in infrastructure and operations in
  Angola and Zambia.
• flow release gates at the Ngoma bridge structure.

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Ngoma Bridge

• THANK YOU FOR LISTENING

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IWRM IN NAMIBIA
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IWRM Def.

• A process which promotes
• - Coordinated development and
• - Management of water, land and related resources
  
• - Maximize economic and social welfare
• - Equitable
• - Sustainable

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Enabling Environment

• Namibian Constitution article 95(1)
• 1993 WASP
• - DRWS
• NamWater
• NWRMR-White paper
• WRM act 24 of 2004

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Cross sectoral integration

• NDP,s
• International coordination
• Decentralization policy

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Institutional Arrangements

• Government custodian of water resources
• - MAWF
• NAMWATER
• Basin comm
• Water point comm
• CBNRM
• MRLGRD
• Communal land boards
• NWP

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Present and Past initiatives

• CPP- includes a project on IWRM
• Kuiseb
• Cuvelai Basin
• Karst Mgt body
• Every river has its own people
• WDM- Rehoboth
• NRA
• NWP

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GAPS

• Lack of Policy implementation
• Information dissemination networks
• Fragmented and uncoordinated development of
  resources
• What to integrate ?
• - Decisions
• - Institutions
• - Sectors
• - Utilization