The wells – While the water of Lake Turkana is salty and non-drinking, the water from the sources of the Oasis was drinkable. The aim was to enable these populations to have effective access to drinking water since the sources were insufficient and difficult to access (obligations towards neighbouring populations and other objective difficulties).
Before reaching the decision to build the wells, the springs between Loiyangalani and the village of Elmolo were studied: they are also largely saline and therefore not exploitable. A spring, which had an interesting scope, was instead vulnerable to anthropogenic activities and also to the presence of animals, so its use for the tribe of the Elmolo was excluded.
Acquifera co-funded the project and carried out the study that allowed to reconstruct the structure of the subsoil and allowed to identify the potentially more productive points for the construction of the two wells.
The study made it possible to determine the hydrogeology of a large area, obtaining information and data that, when appropriately used, could give great advantage to local populations.
To address the various problems related to water research, have been carried out specific investigations, which can be replicated at different scales of intervention and which are also decisive in the most difficult contexts.
The drilling of the wells represented the final moment of a research that was divided into three main phases:
- remote sensing and analysis of satellite images,
- geological survey on the ground,
- geophysical prospecting with tomographic resistivity surveys.
Fortunately no water was found coming from the nearby lake, and therefore saline, but good quality water, suitable for domestic use, probably coming from Mount Kulal, such as that of the sources of the Oasis.
A well (depth of about 50 metres) and the tapping work in Loiyangalani were built. Groundwater was found in an area that is always dry, where nobody expected to find water at that depth.
To allow easy collection, a submerged pump was installed, fed by solar panels, a storage tank and a fountain. The well, with a productivity of about 60 litres per minute, provides approximately 20-30 litres of drinking water per day for about 2000 people.
Another well was built 7 km from Loiyangalani.