Knowra Guarani Aquifer Guarani Aquifer A transboundary groundwater system beneath parts of Argentina, Brazil, Paraguay, and Uruguay. Its sandstone formations store water that supplies towns, agriculture, industry, and thermal springs.
Guarani Aquifer System : The geological and hydrological system of aquifers, confining layers, and recharge zones known as the Guarani Aquifer. This technical framing includes the connected formations and water flows behind the reservoir.
Groundwater : Water held beneath Earth’s surface in saturated soil, sediment, and rock. The aquifer is a major regional store of this resource.
Transboundary aquifer : An aquifer that extends across the territory of more than one country. The Guarani’s shared extent makes it a prominent case of groundwater spanning borders.
Guarani people : An Indigenous people of South America whose communities live across parts of Brazil, Paraguay, Argentina, and Bolivia. The aquifer takes its name from the Guarani, whose homeland spans the region.
Botucatu Formation : A widespread Jurassic sandstone formation in southern South America, part of the principal water-bearing units of the Guarani system. Its porous sandstone stores much of the aquifer’s groundwater.
Groundwater well : A shaft or borehole that accesses groundwater for monitoring or extraction. Wells bring Guarani water to communities, farms, and businesses.
Guarani Aquifer Agreement : A 2010 treaty among Argentina, Brazil, Paraguay, and Uruguay concerning the Guarani Aquifer. The agreement establishes principles for cooperation over the shared resource.
Paraná Basin : A large sedimentary basin in central and southern South America, including parts of Brazil, Paraguay, Uruguay, and Argentina. The Guarani formations lie within the broader geological basin.
Pirambóia Formation : A Permian–Triassic sandstone formation in Brazil that forms part of the Guarani Aquifer System. Its sandstones contribute additional water-bearing layers in the system.
Public water supply : The infrastructure and services that deliver water for household and community use. Many municipalities rely on wells tapping the aquifer for drinking water.
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