Embalse Los Aromos is an artificial reservoir located in the commune of Limache, Región de Valparaíso, approximately 5 km upstream from where Estero Limache meets the Río Aconcagua. Inaugurated in 1972, the reservoir holds up to 35 million cubic meters of water and serves as one of the principal drinking water sources for the Gran Valparaíso region, supplying roughly 20% of the water needs of Concón, Viña del Mar, Valparaíso, Quintero, Puchuncaví, Papudo, Maitencillo, Villa Alemana, and Quilpué — a combined population of over one million people. Its water supply is drawn from Estero Limache and diversions from Río Aconcagua via a canal originating near the Puente Boco.

Paddlers should be aware of a significant legal restriction: because Embalse Los Aromos functions as a drinking water reservoir, nautical and water sports activities — including SUP and kayaking — are prohibited by Chilean law. Carabineros de Limache have confirmed this prohibition explicitly when queried about paddling on the reservoir, noting that while some private landholders may provide informal access to the shoreline, engaging in water sports there is a punishable offense. Anyone promoting or organizing paddling activities on this reservoir does so contrary to the legal framework governing drinking water bodies in Chile.

Vehicle access to the reservoir area carries an entry fee of 6,000 CLP per vehicle and 3,000 CLP per motorcycle. Fishing for pejerrey is practiced at the reservoir, and hunting is prohibited. The reservoir's coordinates are approximately 32°57′49″S, 71°22′36″W, placing it within the Cuenca del Río Aconcagua watershed.