Quantification of water related soil erosion in the transboundary basin of the Bia (West Africa)

In view of the complexity of the phenomenon of water related soil erosion in the Bia catchment area, linked to a large heterogeneity of soils, to a very scattered and in some places non-existent vegetation cover, and to a poorly distributed precipitation in both space and time, a mapping test of the “specific erosion” random variable is undertaken. The mapping of the intensity of the erosion hazard was carried out using the Universal Soil Loss Model (USLE). The map shows that the basin is generally characterized by relatively moderate erosion rates with an average erosion rate of 16 t/ha/year.

ASSESSMENT OF CARCINOGENIC RISK OF DRINKING SURFACE WATER CONSUMPTION OF THE TRANSBOUNDARY BASIN OF THE SELENGA RIVER IN THE TERRITORY OF MONGOLIA

The assessment of the carcinogenic risk of the impact of drinking surface waters on the population health of the transboundary basin of the Selenga river in Mongolia is described in the article. We carried out expeditionary studies of the quality of drinking surface waters on the territory of four aimags, which represent different degrees of economic development and are completely included in the Selenga river basin: Khuvsgul, Arkhangai, Bulgan and Selenge. In this work, we used the methodology used by the US Environmental Protection Agency to quantify the carcinogenic risk of exposure to chemical compounds present in surface waters using the example of these aimags in Mongolia. The application of this methodology for risk assessment gives a great advantage over traditional methods of regulation. It has been established that on the territory of the Selenge aimag, the risk of developing a carcinogenic effect from the impact of priority pollutants on public health associated with the quality of drinking water is high and in the territory of Bulgan, Khuvsgul and Arkhangai aimags are medium, which requires state regulation of the risk and the development of appropriate standards.

African Basin Management Organizations

In Africa, basin organizations are almost indispensable mechanisms for any attempt to achieve the sustainable protection of transboundary water resources. Indeed, transboundary freshwater pollution is a growing concern at the African transboundary basin level. In this context, African basin organizations play a central role in the protection of transboundary water resources and their ecosystems. In order to prevent pollution damage and protect water resources, basin institutions have been entrusted with a variety of functions and tasks in the formation and implementation of pollution control standards. This monograph explores and highlights the increasingly important role of basin organizations in this area and provides some avenues for strengthening the work they perform to protect river systems.