Estero Paredones is a small coastal stream in the O'Higgins Region of Chile, originating near the town of the same name from the confluence of Estero Membrillo and Estero de La Población. It flows through a narrow valley in the Cordillera de la Costa, initially trending southwest before shifting northwest and then due west, ultimately emptying into the Pacific Ocean via laguna Bucalemu at the beach resort of Bucalemu. The stream's own length is approximately 15 km, though the full drainage from its longest tributary extends to about 27 km. The watershed covers a total area of 205 km².

The mouth of the estero at Bucalemu serves as a tourist destination, which suggests some level of visitor infrastructure in that area, though specific paddling facilities are not known. The laguna Bucalemu, situated immediately adjacent to the ocean at the stream's terminus, represents the most notable geographical feature along the route and would likely be the focal point of any paddling activity on this waterway.

Given the limited length of the stream and its coastal setting within the hills of the Cordillera de la Costa, paddling here would involve a relatively short, low-gradient waterway passing through a narrow valley before opening into the coastal lagoon. Beyond these basic geographical and hydrological facts, detailed particulars specific to paddling — including access points, hazards, water temperature, water quality, seasonal flow conditions, and any applicable regulations — are not widely known. Paddlers considering a trip on Estero Paredones should seek local knowledge or contact regional authorities before planning a visit.