The lake occupies a massive double-caldera structure created by complex volcanic eruptions approximately 200,000 and 15,000 years ago.
The lake rarely freezes in winter due to its significant depth and the insulating effect of the surrounding caldera walls.
It is an oligotrophic lake, meaning it has very low biological productivity and high water clarity.
The 'Otome no Zo' (Maiden Statue) was designed by Kotaro Takamura and serves as the iconic symbol of the lake.
The lake level is artificially regulated to support hydroelectric power generation downstream.
Lake Towada is a double-caldera lake formed by volcanic activity, located at the intersection of Aomori and Akita Prefectures. It serves as the headwaters of the Oirase Mountain Stream, which flows eastward from the lake's outlet. With a maximum depth of approximately 327 meters, it ranks as the third deepest lake in Japan. The lake's surface remains remarkably clear due to low nutrient levels, maintaining a deep blue hue. It is situated within the Towada-Hachimantai National Park boundaries. The surrounding landscape features a mixture of broad-leaved forests that undergo significant seasonal color changes.
The lakeside pier area near the Otome no Zo statue.
Rent a sightseeing boat to access the central lake areas not visible from the shoreline roads.
Combine your visit with a hike along the adjacent Oirase Stream trail for a full experience of the ecosystem.
Check weather reports specifically for the caldera rim, as mountain mist can obscure visibility quickly.
Trying to walk the entire perimeter in one day, as the road system is vast and terrain is mountainous.
Sightseeing boat operations are suspended during the winter months due to ice and snow accumulation.
Maintain silence near the Maiden Statue area; do not remove stones or vegetation from the national park.
