A study on the topography and51 the environmental aspects of the irrational occupations of the urban grounds of the Commune of Kisenso with Kinshasa was undertaken in order to determine the constructible zones on the basis of principle of the ekistics one. With this intention, it laid down two objectives: establishment of level lines on the whole of the surface of the Commune and the determination of the constructible zones. The results obtained make it possible to conclude that: the Commune of Kisenso is built on a hill whose altitudes lie between 325-450 Mr. the proportions of the slopes are variable:0-2 %; 2-4 %; 4-8 %; 8-12 %; 12-15 %.The establishment of the plan of the slopes made it possible to deduce the constructible zones from Kisenso with 40.70% and the unconstructible zones to 59.30%. Their surfaces rise respectively to 659.517334 ha and 962.122670 ha.However, the absence of induced adjustment of the free compartmental occupations of the constructible and marginal zones. The current number of the pieces of the Commune of Kisenso occupied freely is 2168. However, in accordance with the ekistics standards, Kisenso should contain 393 pieces. Thus, the uncontrolled extension of occupations of the grounds of the Commune causes erosions, floods, stranding which constitute recurring calamities at each rain season.

The town of Kinshasa, by its spectacular space extension is confronted with many environmental problems, in particular that relating to the land stock management. Observations of ground supplemented by a socio-economic and demographic investigation into the management of the urban grounds in the Commune of Kisenso with Kinshasa were undertaken in order to release the repercussions environmental S rising from the dualistic management of the urban administration and usual Heads of the land resources. The results obtained reveal that: - 60% of the surveyed pieces are directly affected by erosions including 55.2% exposed to erosions; - 25% of the pieces are affected by floods and 15% by stranding; Concerning the causes at the base of degradation of the grounds of the Commune, the results indicate the inexistence of networks of drainage of water, the bad topographic orientation of the dwellings as well as the lack of sumps in the pieces is 47.60 %, 19.40% and 16.40% respectively of the questioned people. Lastly, the investigation into the causes of this ground management of the Commune accuses the absence of a policy of habitat, anarchy in the distribution of pieces and the dualistic administration of the land administration and usual Heads.