Laguna La Picasa is a well-known fishing lagoon located in the General López department of Santa Fe province, Argentina. Long considered an iconic destination for Argentine anglers, this lagoon has historically drawn fishing enthusiasts from across the region seeking its productive freshwater fishery. Situated in the Pampas lowlands, the lagoon is part of the broader wetland system characteristic of central Argentina's flat agricultural landscape, where shallow lakes and lagunas serve as vital aquatic habitats. In recent years, La Picasa has faced serious environmental pressures, most notably a significant decline in water levels that has raised urgent conservation concerns among the fishing community and local authorities alike.