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Water Data Revolution: Closing the Data Gap for Transboundary Water in Africa

The World Bank's Water Data Revolution (WDR) program, supported by the Cooperation in International Waters for Africa (CIWA) initiative, addresses critical data gaps in transboundary water management across Africa. This report details the program's objectives, structure, and outcomes, emphasizing the use of remote sensing technology and capacity building to improve decision-making for sustainable water management.

Program Objectives

The WDR aims to enhance institutional capacity for collecting, storing, and analyzing data to support informed, evidence-based decisions on transboundary water resources. By leveraging remote sensing (RS) data, the program seeks to bridge data gaps, reduce collection costs, and promote equitable and sustainable water management across river basins in Africa.

Program Structure

The program is organized into three interconnected pillars:

1. Pillar A: Assessment of Current Status and Needs

• Conducted surveys and interviews with River Basin Organizations (RBOs) and Regional Organizations to identify data gaps, technical limitations, and training priorities.
• Found that constraints include limited technical capacity, financial constraints, and restricted access to reliable, in-situ data.
• Key demand for training in RS data applications for water accounting, flood and drought monitoring.

2. Pillar B: Inception Workshops and Capacity Building

• Delivered online workshops and training sessions on RS data collection, management, and analysis.
• Introduced tools like Google Earth Engine, Hydrosheds, and WA+ (Water Accounting Plus) to enhance water resource monitoring and decision-making.
• Prioritized accessible, cost-free tools to ensure broader accessibility, with an emphasis on hands-on learning and retention of knowledge.

3. Pillar C: Adapting Innovative Tools for Water Resources Management (WRM)

• Developed customizable Water Accounting (WA) dashboards using RS data and open-source tools (e.g., Tableau) for selected RBOs: Volta Basin Authority (VBA), Incomati-Maputo Watercourse Commission (INMACOM), and Zambezi Watercourse Commission (ZAMCOM).
• Dashboards provide real-time, multi-year water balance insights, enabling equitable water allocation and informed resource management.

Water Accounting Dashboard Development

• The WA dashboards were developed using satellite-derived data, aggregated monthly and resampled to 1 km spatial resolution.
• They consist of five tabs (Basin Overview, Water Availability, WA Indicators, Water Balance, and Climate Change) offering visualized insights into water resources.
• Publicly accessible via Tableau, these tools facilitate transparency and collaborative decision-making.

Strategic Insights

• Leveraging Public Domain Data: Utilizing freely available RS data enhances accessibility and reduces costs, though data quality validation is essential.
• Empowering RBOs: Capacity building through training and tools enables RBOs to manage data effectively, with scalable solutions like "train-the-trainer" programs ensuring long-term sustainability.
• Tailoring Analytical Tools: Dashboards must align with RBO-specific needs, contexts, and technical capacities for optimal impact.
• Promoting Collaboration: Open data platforms and joint training initiatives foster trust and cooperation among riparian countries, supporting equitable resource management.

Key Findings

• The WDR program has successfully built capacity, provided tools for data-driven decision-making, and advanced sustainable water management in transboundary basins.
• Challenges include improving data quality, scalability, and addressing varying capacities among RBOs.
• Recommendations include targeted case studies, continuous engagement with RBO members, and further integration of climate change projections into water accounting.

In summary, the WDR represents a transformative approach to closing data gaps in African transboundary waters, enabling evidence-based, equitable, and sustainable water management.