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MAKGADIKGADI CATCHMENT

The Okavango River Basin – Challenges & Opportunities. OKACOM, 2003, Corvallis Several slides compiled by Dr Peter Ashton – CSIR (2002). ANGOLA. N. Cuando R. ZAMBIA. Cuito R. Zambezi R. Cubango R. Kavango R. Okavango Delta. Chobe R. ZIMBABWE. Okavango Basin. Nata R.

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MAKGADIKGADI CATCHMENT

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  1. The Okavango River Basin –Challenges & Opportunities.OKACOM, 2003, CorvallisSeveral slides compiled by Dr Peter Ashton – CSIR (2002)

  2. ANGOLA N Cuando R. ZAMBIA Cuito R. Zambezi R. Cubango R. Kavango R. Okavango Delta Chobe R. ZIMBABWE Okavango Basin Nata R. Boteti River basin Omatako R. Lake Ngami Sowa Pan basin Map sourced from GEF Report on Okavango Delta Study Okwa R. NAMIBIA Ntwetwe Pan basin Deception Pan basin 100 km BOTSWANA R.S.A. MAKGADIKGADI CATCHMENT

  3. 20° E M.A.P. ANGOLA (mm) 300 400 500 15° S 600 700 800 ZAMBIA 900 1000 1100 Cuando R. 1200 1300 Zambezi R. 1400 Cubango R. Cuito R. Kavango R. Chobe R. Zambezi R. Rundu ZIMBABWE NAMIBIA Savuti R. 20° S OKAVANGO DELTA Nata R. Boteti R. Omatako R. L. Ngami Maun L. Xau Makgadikgadi Pans BOTSWANA RAINFALL DISTRIBUTION

  4. 180 Max.: 16,145 x 106 m3 Mean: 9,863 x 106 m3 Min.: 5,321 x 106 m3 5-year Moving average 160 140 120 Percentage of mean annual inflow 100 80 60 40 1930 1940 1950 1960 1970 1980 1990 2000 Time (Years) VARIABLE ANNUAL INFLOWS AT MOHEMBO (1933 - 2001)

  5. Inflow Volume (Mohembo) 1000 Inflow (106 m3) 500 0 Rainfall (Average of Shakawe plus Maun) 100 Rainfall (mm) 50 0 Outflow Volume (Thamalakane) 40 Outflow (106 m3) 20 0 J J A S O N D J F M A M J J A S O N D J F M TIMING OF DELTA RAINFALL INFLOW AND OUTFLOW

  6. RIVER INFLOWS + 76 % DIRECT RAINFALL + 24 % DIRECT EVAPOTRANSPIRATION - 84 % OUTFLOW - 3 % RIPARIAN SOILS & GROUNDWATER - 13 % DELTA WATER BALANCE

  7. PROJECTED WATER NEEDS IN OKAVANGO BASIN Anticipated total water requirement = 300 million m3 / year in 2020

  8. RATIFIED INTERNATIONAL CONVENTIONS N/P = Not yet party to Treaty / Protocol

  9. 20° E 15° E ANGOLA 15° S Cuando R. Zambezi R. ZAMBIA Cubango R. Cuito R. Kavango R. Chobe R. Zambezi R. Rundu ZIMBABWE NAMIBIA Savuti R. OKAVANGO DELTA Nata R. 20° S Boteti R. Omatako R. Maun L. Ngami L. Xau Makgadikgadi Pans Boundary of the Okavango Delta RAMSAR site BOTSWANA RAMSAR SITE LOCATION

  10. The Okavango Delta has an enormous variety of different habitat types and a diverse array of aquatic and terrestrial species MOSAIC OF HABITATS

  11. Cuito River Kavango River ANGOLA NAMIBIA OKAVANGO – CUITO CONFLUENCE

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