The marina at Lago Tepuhueico serves as the primary water-access point for Parque Tepuhueico, a private conservation and ecotourism reserve on the central-western side of Isla Grande de Chiloé, within the comuna of Chonchi. The lake itself covers 14.

3 km² at an elevation of 25 meters, with a maximum depth of 25 meters, and forms part of an interconnected hydrological system linked to Lago Huillinco.

From the marina, visitors can access the lake by boat or float tube — the recommended approaches for fishing and exploration — and reach the surrounding temperate rainforest ecosystems that shelter species such as the pudú and the huillín.

The facility is registered with SERNATUR under the address Marina del Lago PC-8, Fundo Quilán, Chonchi, and operates in conjunction with Lodge Tepuhueico.