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.