An analysis of data on the flow of the Congo River and the energy production of the Inga Dam, from 1990 to 2021, was carried out in order to derive a mathematical equation that would establish a correlation between the two variables. This study yields the equation of the simple linear regression line below: y=204.618+0.142x. This equation found will therefore allow us to estimate, based on the water level of the Congo River, the quantity of electrical energy to be produced at the INGA Dam, while considering that the system remains constant. It is observed that the evolutionary trend of the energy production of the Inga Dam follows the rhythm of the evolution of the flow of the Congo River. The evolution of the flow of the Congo River would lead to either positive or negative impacts on the production capacity of the Inga Dam, knowing that this depends on the periods observed. During flood periods, the impact is positive because it increases the production of electrical energy, while during periods of deep low water the impact is negative, it significantly reduces the electrical energy production capacity of the INGA Dam.

An analysis of data on the socio-economic and environmental impact generated by water drilling in the Bahumbu II district of the N’sele commune was carried out. The study made it possible to highlight the contribution of drilling in improving the socio-economic and environmental conditions of the population of the said district. It results from this study that the presence of water boreholes in the Bahumbu II district has a triple social, economic and environmental advantage. On the social level: Improvement in living conditions through the creation of temporary and daily jobs during borehole installation work, the engagement of water sellers in standpipes by the NGO ASUREP... On the economic level: improving public health through more reliable access to clean water, which reduces the cost of treating water-borne diseases. It is also the source of income for the owners of the boreholes through the marketing of water. On the environmental level: the negative impacts of water drilling are not obvious because since the installation of the various water drillings until today, we have not observed the likely effects that could harm the human environment and physical.

Built on the alluvial plain of Kinshasa, the planned city of Matete is bordered on its peripheral areas by green spaces and benefits from a diversity of housing types and facilities laid out on serviced grids, compared to other neighborhoods of the city. Demographic pressure, population densification, and the spread of self-built housing on the former grid-based urban fabric—largely driven by rural exodus, the departure of colonial settlers on the eve of independence, the decline of the National Housing Office (ONL), the anarchic occupation of land extending to the foothills of hilly zones in complicity with the customary authorities of the time, and finally the shift to the rent-to-own system during the Zairianization period—are among the main factors underlying the current transformation of this former turnkey housing area. A local land-use and development plan has now become necessary in order to address the effects of this spontaneous growth generated by upward urbanization.

Anarchic peri-urban town planning has become one of the modes of production of popular housing in African cities. Coming from ascending urbanization, it remains particularly today the most practiced method in the development and growth of the city of Kinshasa. Today, the city of Kinshasa no longer has an urban plan enforceable by all, a planning body or a private or public construction company which would take charge of the subdivisions, the land equipment, the construction of houses as well as their subsequent management and finally a housing policy which would juxtapose the individual initiatives of city dwellers and the regulatory framework of the State. Abandoned to its own devices, the population tries to support itself by building new forms of housing outside of legality, which is often the consequence of the gap between strong demographic pressure and the housing supply.