AQUIFER + GRUNDWASSERLEITER + WASSERFÜHRENDE SCHICHTEN (HYDROLOGIE); INFILTRATION (HYDROLOGIE); HYDROLOGISCHE MODELLE + HYDROLOGISCHE MODELLRECHNUNG; GRUNDWASSERFLUSS + BRUNNENHYDRAULIK (HYDROLOGIE); MAGGIA (TESSINER FLÜSSE); VALLEMAGGIA, BEZIRK + MAGGIA-TAL (KANTON TESSIN); AQUIFERS + WATER-BEARING STRATA (HYDROLOGY); INFILTRATION (HYDROLOGY); HYDROLOGICAL MODELS + MATHEMATICAL MODELLING IN HYDROLOGY; GROUNDWATER FLOW + WELL HYDRAULICS (HYDROLOGY); MAGGIA (RIVERS OF TICINO); VALLEMAGGIA, DISTRICT + MAGGIA VALLEY (CANTON OF TICINO)