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Small reservoirs:  hot spot of scattered resources in the Volta basin P. CECCHI On behalf of the V3 Project
Burkina Faso Localization  Enclosed within the large ring of the Niger River 274 200 Km 2  ( ≈  ½ France; ≈ 22% South Afri...
1951-1980 1981-2000 600 mm 900 mm 1/ Threshold  ≈  mid-seventies 2/ Precipitations:  - 30 % 3/ Southern migration:  > 100 ...
SR ≈  7 M. rural folk  Dry season: > 1000 km 2 > 4000 km
CPWF2: V3 Uses  require  water ( quantity and quality ) Uses  impact  the resource ( quantity and quality ) There exist  t...
CPWF2: V3 <ul><li>Selection of  key questions  to be answered: </li></ul><ul><ul><li>Erosion & siltation   </li></ul></ul>...
CPWF2: V3 <ul><li>Selection of  key questions  to be answered: </li></ul><ul><ul><li>Water quality & productivity   </li><...
CPWF2: V3 <ul><li>Selection of  key questions  to be answered: </li></ul><ul><ul><li>Conflicts & access to (land & water) ...
Up- & Down- scaling  in terms of resource  management   and/but  also  in terms of  processes  involved From scale to scal...
CPWF2: V3 <ul><li>Main challenges </li></ul><ul><ul><li>Real need of clarification of the (stakeholders) expectations </li...
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Small reservoirs: hot spot of scattered resources in the Volta basin

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Presented by Philippe Cecchi (G-eau / IRD) at the International Forum on Water and Food (IFWF), South Africa, 14-17 November 2011.

The International Forum on Water and Food (IFWF) is the premier gathering of water and food scientists working on improving water management for agricultural production in developing countries.

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Transcript of "Small reservoirs: hot spot of scattered resources in the Volta basin"

  1. 1. Small reservoirs: hot spot of scattered resources in the Volta basin P. CECCHI On behalf of the V3 Project
  2. 2. Burkina Faso Localization Enclosed within the large ring of the Niger River 274 200 Km 2 ( ≈ ½ France; ≈ 22% South Africa) 10,5 M. inhbts in 1996 (14,1 M. in 2006) ≈ 38 inhbts / km 2 ; recurrent poverty Upper Basins of the Volta River (Ghana)
  3. 3. 1951-1980 1981-2000 600 mm 900 mm 1/ Threshold ≈ mid-seventies 2/ Precipitations: - 30 % 3/ Southern migration: > 100 km SR: an answer to aridification 1951-1980 > 1700 reservoirs
  4. 4. SR ≈ 7 M. rural folk Dry season: > 1000 km 2 > 4000 km
  5. 5. CPWF2: V3 Uses require water ( quantity and quality ) Uses impact the resource ( quantity and quality ) There exist trade-off between impacts and requirements That determine the nature of available resources <ul><ul><li>Key words </li></ul></ul><ul><ul><li>Integrated managements </li></ul></ul><ul><ul><li>Processes studies </li></ul></ul><ul><ul><li>Local scale </li></ul></ul>Water Uses and Users Requirements Resources Impacts
  6. 6. CPWF2: V3 <ul><li>Selection of key questions to be answered: </li></ul><ul><ul><li>Erosion & siltation </li></ul></ul><ul><ul><ul><li>Why? Where? How? </li></ul></ul></ul><ul><ul><ul><li>What to do? </li></ul></ul></ul><ul><ul><ul><ul><li>Agricultural practices </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Landscape management </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Buffer areas </li></ul></ul></ul></ul><ul><ul><ul><ul><li>Context of climate change (rain events frequency & intensity) </li></ul></ul></ul></ul>
  7. 7. CPWF2: V3 <ul><li>Selection of key questions to be answered: </li></ul><ul><ul><li>Water quality & productivity </li></ul></ul><ul><ul><ul><li>Agricultural intensification </li></ul></ul></ul><ul><ul><ul><li>Pesticides: origin & impacts </li></ul></ul></ul><ul><ul><ul><li>Eutrophication & Cyanobacteria: determinism </li></ul></ul></ul><ul><ul><ul><li>Health impacts </li></ul></ul></ul><ul><ul><ul><li>Bio-indicators: definition </li></ul></ul></ul><ul><ul><ul><li>Fisheries: development & limitations </li></ul></ul></ul>
  8. 8. CPWF2: V3 <ul><li>Selection of key questions to be answered: </li></ul><ul><ul><li>Conflicts & access to (land & water) resources </li></ul></ul><ul><ul><ul><li>Ownership </li></ul></ul></ul><ul><ul><ul><li>New stakeholders </li></ul></ul></ul><ul><ul><ul><li>Agro-business & market </li></ul></ul></ul><ul><ul><ul><li>Decentralization </li></ul></ul></ul><ul><ul><ul><li>Rules? Equity? </li></ul></ul></ul><ul><ul><ul><li>Management & Governance </li></ul></ul></ul>
  9. 9. Up- & Down- scaling in terms of resource management and/but also in terms of processes involved From scale to scale CPWF2: V3
  10. 10. CPWF2: V3 <ul><li>Main challenges </li></ul><ul><ul><li>Real need of clarification of the (stakeholders) expectations </li></ul></ul><ul><ul><ul><li>Political – Economical – Social – (…) VBDC </li></ul></ul></ul><ul><ul><li>Importance of the participative approaches & modeling </li></ul></ul><ul><ul><ul><li>Multidisciplinary diagnostics </li></ul></ul></ul><ul><ul><ul><li>Simulations PLATEFORMS </li></ul></ul></ul><ul><ul><li>Assessment of the pertinence of the measured externalities </li></ul></ul><ul><ul><ul><li>Economical </li></ul></ul></ul><ul><ul><ul><li>Hydrological CONSENSUS </li></ul></ul></ul><ul><ul><ul><li>Eco-health </li></ul></ul></ul><ul><ul><li>Implementation of “pilot” operations METHODOLOGY </li></ul></ul><ul><ul><li>Up- and Out- scaling SHARING </li></ul></ul>
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