Mapping rainwater management strategies at landscape scale Nile 3 on targeting and scaling out

1. Mapping rainwater management strategies at landscape scale Nile 3 on targeting and scaling out

2. Overview • Introduction • Concepts used (definitions) • Modeling framework with illustration • Using the maps • Up-coming research

3. Targeting and scaling out tool • Objective • Feasibility maps that includes bio-physical and socio-economic criteria • Landscape approach to rainwater management modeling intro concept framework use up-coming

4. Overview • Introduction • Concepts used (definitions) • Modeling framework with illustration • Using the maps • Up-coming research

5. Some definitions • Rainwater management practice = farmers’ choice to improve water retention or water productivity • Soil and water conservation (bunds, …) • Water harvesting • Tree (agro-forestry) • Livestock and grassland management • Crops and fertility management • Intervention = “external actor” to enable a practice change intro concept framework use up-coming

6. Landscape approach to water intro concept framework use up-coming

7. Landscape approach to water Highland : infiltration ↑ Midlands : SWC ↑ Lowlands : efficiency ↑ intro concept framework use up-coming

8. Rainwater management strategy intro concept framework use up-coming

9. Overview • Introduction • Concepts used (definitions) • Modeling framework with illustration • Using the maps • Up-coming research

10. Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice (diversion, terraces, trees,…) Modeling framework Transformation into spatially explicit variables and threshold definitions Mapping RMS at landscape scale intro concept framework use up-coming Feasibility map practice A Feasibility map practice B Feasibility map practice C Rainwater management strategy map

11. Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice (diversion, terraces, trees,…) Modeling framework Database of 80 practices Transformation into spatially explicit variables and threshold definitions Mapping RMS at landscape scale intro concept framework use up-coming Feasibility map practice A Feasibility map practice B Feasibility map practice C Rainwater management strategy map

12. Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice (diversion, terraces, trees,…) Modeling framework Transformation into spatially explicit variables and threshold definitions Mapping RMS at landscape scale intro concept framework use up-coming Feasibility map practice A Feasibility map practice B Feasibility map practice C Rainwater management strategy map

13. Suitability criteria

14. Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice (diversion, terraces, trees,…) Modeling framework Transformation into spatially explicit variables and threshold definitions Mapping RMS at landscape scale intro concept framework use up-coming Feasibility map practice A Feasibility map practice B Feasibility map practice C Rainwater management strategy map

15. Getting single feasibilty maps Bio-physical suitability Willingness to adopt Feasibility map intro concept framework use up-coming

16. Biophysical suitability maps equal weight aggregation intro concept framework use up-coming

17. Adoption maps : Small area estimation technique

18. Adoption rule for orchard

19. Adoption rule for SWC

20. Adoption rule for diversion

21. Willingness of adoption maps intro concept framework use up-coming

22. Feasibility maps intro concept framework use up-coming

23. Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice (diversion, terraces, trees,…) Modeling framework Transformation into spatially explicit variables and threshold definitions Mapping RMS at landscape scale intro concept framework use up-coming Feasibilty map practice A Feasibilty map practice B Feasibilty map practice C Rainwater management strategy map

24. Strategy quantification

25. Aggregation into strategies at landscape scale zonal overlay with a landscape layer Bio-physical map, willingness of adoption map, feasibility map intro concept framework use up-coming

26. Overview • Introduction • Concepts used (definitions) • Modeling framework with illustration • Using the maps • Up-coming research

27. Using the maps • High uncertainty • Difficulty to validate the maps • Entry point to start a discussion with community • Towards an open source GIS tool for policy makers, research centers, NGO, extension service intro concept framework use up-coming

28. Overview • Introduction • Concepts used (definitions) • Modeling framework with illustration • Using the maps • Up-coming research

29. Up-coming research • Map validation in 4 new watersheds • Using the “happy strategy game” • Farm household survey (600 farmers) • Impact assessment • on hydrology, ecosystem services, livelihoods • Explorative scenarios intro concept framework use up-coming