Lagunas Encadenadas del Oeste is a remarkable chain of interconnected shallow lakes situated in the western Buenos Aires Province of Argentina, centered near coordinates 36.95°S, 62.38°W at elevations ranging from approximately 92 to 103 meters above sea level. This endorheic (closed drainage) basin system spans over 1,280 square kilometers and represents one of the most ecologically significant lentic (still-water) environments in the entire Pampas region. The lakes are linked through a network of canals, forming a hydrologically connected chain that serves both flood-control functions and supports the surrounding communities. The surrounding landscape transitions between open grasslands dominated by native grasses, sparse woodlands of caldén (Prosopis caldenia) and chañar (Geoffroea decorticans) toward the southern and western margins, and shoreline communities of salt-tolerant vegetation including jume (Sarcocornia sp.) and pelo de chancho (Distichlis spicata), with scattered dune formations. This mosaic of habitats creates a productive and diverse aquatic ecosystem that supports a rich fish fauna and attracts anglers from across the region.