Enakyo was the first dam-created lake in Japan to be designated as a prefectural natural park.
The name 'Enakyo' translates to 'Ena Gorge' and was coined by educator and journalist Soho Tokutomi.
The unique rock formations were sculpted by water erosion over millennia before the dam significantly raised the water level.
The surrounding geology consists largely of granite, which creates the distinctive pale, sheer cliffs rising from the water.
The lake serves as a critical reservoir for hydroelectric power generation in the Gifu region.
Enakyo is a man-made lake formed by the construction of the Ohi Dam on the Kiso River in 1924. The area is defined by its unusual, jagged rock formations, including the prominent Byobu-iwa and Tsuboi-iwa cliffs. Boat tours operate from the central pier, allowing visitors to navigate the narrow gorge created by the dammed river. The water level is regulated by the dam, creating a reservoir environment that reflects the changing colors of the surrounding forests. The landscape features seasonal contrasts, ranging from cherry blossoms in spring to vibrant foliage in autumn. It serves as a scenic gateway between the Kiso Valley and Nagoya.
The observation deck near the Enakyo Visitor Center for a wide-angle shot of the dam and the gorge entrance.
Take the sightseeing boat tour for the only perspective that offers a clear view of the deeper rock formations.
Visit the Enakyo Service Area on the nearby expressway for an elevated panoramic view of the dam and gorge.
Allocate time to walk the lakeside paths, as they provide access to observation decks not visible from the water.
Do not attempt to swim in the lake, as the currents near the dam and the depth of the reservoir make it dangerous.
Sightseeing boats may suspend operations during heavy rain, high wind conditions, or seasonal maintenance periods.
