Lago Rapel (also known as Embalse Rapel) is a large reservoir nestled in the Libertador General Bernardo O'Higgins Region of central Chile, formed by a dam on the Rapel River. Covering approximately 80 square kilometers (31 square miles) of surface area and sitting at an elevation of 110 meters (360 feet), this expansive body of water is fed primarily by the Cachapoal River and the Tinguiririca River, both of which drain significant portions of the Andes before converging into the lake. The reservoir's size and diverse habitat make it one of the more notable fishing destinations in the O'Higgins Region, drawing anglers in search of both sport and table fish in a scenic central Chilean landscape.