Conceptual and Numerical hydrogeological modelling – Chayahué Peninsula,

Calbuco, Los Lagos Region.

We were asked to develop a conceptual and numerical hydrogeological model in a place where a Fish Farm is located. The previous with the goal of accomplish a sustainable and efficient management of water resources.

The challenge in this requirement was to understand the aquifer’s dynamics and later on, make a numerical model capable of simulate its behavior facing several pumping scenarios.

To accomplish this study, different activities took place:

• Pumping test analyses.
• Geological study of the place.
• Aquifer’s hydraulic parameters calculation.
• Water quality profiling inside the wells.
• Hydrogeological survey of the sector.
• Geophysics prospection campaign using Electrical Resistivity Tomography (ERT).
• Water quality analyses.
• Piezometry elaboration.
• Water balance and recharge calculation.

The information gathered by our team let us define:

• The Conceptual hydrogeological model.
• The water balance calculations.
• The implementation of the numerical model.

Finally, starting from this numerical modelling, we made several approaches for water managing and for having a Controlling Plan to optimize groundwater production with quality and quantity criteria.