The other 300,000 metric tons remain uncollected, resulting in illegal garbage dumping and block drainage systems, preventing rainwater from draining correctly streams, and causes water stagnation and flash floods.

In the past, wastes, rainwater, and flood management were considered and treated separately. Nowadays, we are witnessing a more complex but interlinked approach to managing these three key components. A better collection, recycling, and repurposing of solid and liquid waste benefit urban peri-urban agriculture (UPA) and green urban spaces (GUS) (Sanfo et al., 2022). In urban areas, besides reducing the quantity of waste in drainage canals to prevent flash flooding, waste recycling also produces clean water and compost as soil nutrients.

The role of the Living Lab of West Africa (LLWA) is to use trans- and inter-disciplinary, participatory, and proactive approaches to better address the heavy rain events, wastes, and urban flash floods in the city of Ouagadougou in Burkina Faso. These approaches bring together different vital stakeholders to handle the framework’s complexity.

Experiments

In the period from February to March, we have identified focal points in different entities including NGO’s, civil servants, civil society organisations, town halls, etc. The ODK clients recruitments is planned for June and July. Regarding equipment procurement and installations, we have already installed one water level gauge in the main reservoir of the town. We also have at our disposal 04 standlone automatic raingauges and a meteotrakers and air pollution measuring instruments to be installed in four districts of the city of Ouagadougou. In respect to the historical data collection and information gathering, activities related to the mapping of dump sites, water reservoirs and green spaces as well the ODK Clients Protocols have been achieved.

 The survey of dumping sites was carried out from 20 April to 2 June 2022. The main objective was to identify potential dumps in the district of Ouagadougou. Our team made use of the ODK software survey form to geo-locate the different sites. We also have a critical look at whether these sites are formally allocated by the town hall to serve as dumps or are just informal sites. The team used the Jareeb software to estimate the surface area of the identified sites.

 The activity for the identification of potential installation sites of rain gauges was conducted at the same time as the identification of waste sites. With the permission of their respective authorities, four districts of the City of Ouagadougou were identified for the installation. Out of the four districts, three already gave their consent for the installation of the rain gauges. We therefore expect to have the consent of the fourth district in short notice.

Background

As a result of rapid urbanization, waste management, sanitation, and hygiene have become major urban concerns in West Africa. Communities in urban and peri-urban settlements of Burkina Faso face challenges such as crop damages, pollution, diseases (e.g., the spread of malaria, cholera, diarrhea), and associated risks.
Waste generation directly correlates with income growth. The insufficient awareness of the population about the benefits of repurposing organic waste and domestic sewage, combined with the inadequate waste management infrastructure, further worsens the problem of sustainable waste disposal and recycling. A better collection, recycling, and repurposing of solid and liquid waste can benefit urban and peri-urban agriculture (UPA) and green urban spaces (GUS).
The increasing frequency and intensity of precipitation events during the June-September season mainly contribute to an increase in floods and water stagnation in the city Therefore there is a need to improve the disaster risk management schemes and early warning systems and guide decision-making in implementing flood-control infrastructure projects at national and regional scales. Currently, warnings for pluvial floods are mostly limited to information on rainfall events over larger areas (i.e., no given rain intensities and durations), which is often not detailed enough to protect people and goods effectively. A proof-of-concept of impact-based forecasting for pluvial floods is necessary for Ouagadougou to combat flood effects and improve livelihoods in urban areas; meanwhile, a circular economy is built around waste management.