DETERMINATION OF GROUNDWATER AQUIFER TYPES BY GEOLOGICAL APPROACH : CASE OF THE COMMUNE OF AMPITATAFIKA ANTANANARIVO MADAGASCAR

Geology, hydrogeology, geophisics

In the uplands Malagasy, specifically in the Analamanga Region, access to drinking water seems to be difficult due to outdated installations and a lack of new water connections, particularly in the peripheral areas of the town. The majority of households in Ampitatafika Antananarivo opt for well water as their water supply solution. As a preliminary study for further research work, a geological and hydrogeological knowledge base of the area is to be determined for sustainable exploitation of the underground water resource. The aim of this article is to identify aquifers. The combined geological, hydrogeological and geophysical approach consists in determining the lineaments by satellite image processing, then interpreting a geoelectric section of the area to specify the lithology of the terrain in order to determine the characteristics of existing aquifers. The results concluded that there are two types of aquifer at Ampitatafika: an alterite aquifer and a fractured basement aquifer.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.