Joint Asia –African Water Cycle Symposium
25-27 November 2013
UTokyo, Tokyo, Japan

Project Design Matrix (PDM) by VOLTA BASIN
AUTHORITY (VBA)
Dr. Charles Biney, Executive Director ,Volta Basin Authority andDr. Jacob TUMBULTO, Director, Volta Basin Observatory,
Volta Basin Authority
Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Volta Basin Member States

Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Rainfall and Agro-Ecological Zones
and Water Resourcesi. Spatial variability - southnorth gradient;ii. Medium-term variability alternating dry & wet
periods basin-wide;iii. Strong spatial and shortterm variability within agiven season• The Sudano-Sahelian Zone:
500-900 mm – BF and MA• The Sudanian Zone: 9001,100 mm – northern GH, CI,BE & TG
• The Guinean Zone: >1,100m;
bimodal rainfall; southern GHSurface Water Resources
Sub-basin

Area (km2)

Contribution

Black
Volta

149,015

18%

Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

White

104,749

20%

Oti

72,778Others26%
36%Autorité du Bassin de la Volta (ABV)Population•Basin population
18.6 million in 2000;•Projected to reach
33.9 million in 2025;•Rural pop. 70% ;•Live on naturalresources• Export of primarycommodities;• 2012 HDI mostly <0.5(UNDP, 2012)
Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Agricultural Production Systems•
•
•

•
•
•

Agricultural production about
40% of basin economic output;
Most cultivation still rain-fed;
Production increases largely
due to expansion of agric.
land;Cropping systems distributedin the agro-climatic regions;Livestock - important
upstream water use;
Fisheries in large reservoirs;

Irrigated agriculture relatively
developed in BF

Climate Change Adaptation could lead to morewater retention upstream

Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Development Challenges -Large
Dams/Reservoirs
Env. Change – Water Supply – Water Demand – Stakeholders/Capacity – Decision SupportSurface water:
Agricultural & hydropower development

Ziga Reservoir
NIGER
Volume: 0.2 km³2000Lery Reservoir
MALI
Volume: 0.6 km³
1976
BUR

KI

NA

FA

S

Bagre Reservoir
Volume: 1.7 km³
1992

O

BURKINA FASO
Small Reservoirs
Volume: 0.6 km³

Kompienga Reservoir
Volume: 2.0 km³
1984

Tono Reservoir
Volume: 0.1 km³
1980

BENIN

Bui Reservoir
Volume: 12.3
IVORY COAST
km³
2009/2010

lake

TOGO

Volta

Lake Volta
Volume: 148 km³
1964

GHANA
Small Reservoirs
Volume: 0.1 km³

GH

A

NA

Kpong Reservoir
Volume: 0.2 km³
1982

Top 2 Prioritised Water Resources Challenges

Degradation
Degradation of Aquatic Ecosystems
Changes
Changes in water quantity and seasonality of flows
Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Project purpose/ Outputs
The purpose of the project is to improve upon the quantitative andqualitative data in the basin
Outputs
1.

Demonstrate quantitative and qualitative improvement of water
cycle observations
2. Demonstrate flood and drought early warning capability
3. Assess climate change impacts on floods, droughts and water-nexus
4. Prototype data and information integration and sharing systems
5. Improve observational, modeling and application capacity

Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Activities and Key Leaders and Contributors
Lead Organizations
Volta Basin Authority (VBA) / AGRHYMET

1. Demonstrate quantitative and qualitative improvement of water
cycle observation:
••Transmitting rain gauge data to the Lead Organization’s Data Facility andsharing the data by Internet for producing bias-corrected satellite-based rainfall
map to be disseminated to wide communities (WMO/HYCOS, ESA, TIGER-NET,
NASA, NOAA, JAXA, DIAS)(In-situ and satellite observation data archive
WMO/HYCOS, UNEP/GMES, UNESCO/G-WADI, UNESC-WMO/IGRAC, Tiger
heritage, ODA project heritage, AMMA,Reanalysis (ECMWF, NCEP, JMA), ESA, NASA, NOAA, JAXA, CEOS Water Portal,
GEOWOW, NASA-SERVIR, DIAS

Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Activities and Key Leaders and Contributors
Climate data archive at least past 20 years which correspond to the availabilityof the GCM model outputs.
WMO/HYCOS, Reanalysis (ECMWF, NCEP, JMA), ESA, NASA, NOAA, JAXA, CEOS
Water Portal, GEOWOW, NASA-SERVIR, DIAS
Acquisition and installation of integrated meteorological observation network
covering the parts of the Volta basin.
WMO/HYCOS, AfDB, EU, JICA.

2. Demonstrate flood and drought early warning capability•

Develop distributed physically-based hydrological models including simulation
ability for runoff, evapotranspiration,soil moisture, ground water and vegetation growth. CREST, DIAS, science
communityPrototype real-time data integration systems for satellite data bias correction,hydrological modeling including data assimilation and information dissemination(ACMAD, ECMWF, National Weather Services, GEOWOW, NASA-SERVIR,UNESCO-IFI, UNESCO-Princeton Univ., DIAS)

Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Activities and Key Leaders and Contributors
3. Assess climate change impacts on floods, droughts and water-nexusSelection of GCMs which can express the regional climate (PCMDI, DIAS, sciencecommunities)
Bias correction and downscaling (PCMDI, CORDEX, DIAS, science communities)
Socio-economic data archive: GLOWASIS; Assessment of the changes of flood,drought and water-nexus (GLOWASIS, CORDEX, DIAS, science communities)

4. Prototype data and information integration and sharing systems


Develop an integrated water portal for improving data accessibility and data sharing(CEOS Water Portal, GEOWOW, NASA-SERVIR, DIAS)
Prototype a data integration and analysis and information dissemination system

5. Improve observational, modeling and application capacity

Develop training modules and design and implement training courses (Tiger,UNESCO, NASA-SERVIR, RCMRD, ITC, UNU, UTokyo,
Promote secondary educational program in collaboration with universities (ITC,UNU, UTokyo)

Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)Thank you for your attention

Bénin, Burkina Faso, Côte d’Ivoire, Ghana, Mali, Togo

Autorité du Bassin de la Volta (ABV)