It is the only multi-arch dam in Japan that has remained operational for nearly a century since its completion.
The dam's design was modeled after the Hume Lake Dam in California.
It was designated a Registered Tangible Cultural Property in 2006 and elevated to an Important Cultural Property in 2013.
The reservoir area is known as a local spot for viewing cherry blossoms in the spring.
The total water storage capacity of the reservoir is approximately 1.4 million cubic meters.
Honen Pond Dam is Japan's oldest multi-arch concrete dam, designed by the dam engineering pioneer Mamoru Kogi. Constructed between 1926 and 1930, the structure is recognized as an Important Cultural Property of Japan. It features 32 buttresses and 17 arches that support its 141-meter-long crest. The design was heavily influenced by the Haas-style multi-arch dams developed in the United States during the early 20th century. It is primarily used for agricultural irrigation in the surrounding Kanonji plains. The dam undergoes periodic water releases, creating a dramatic overflow effect across its distinct arched face. The structure is located deep within a valley, providing a contrast between its industrial architecture and the surrounding natural vegetation.
The lower observation area provides a clear line of sight to capture the full breadth of the 17 arches.
Visit during the spring cherry blossom season for the best aesthetic views of the dam surroundings.
Wear comfortable, non-slip walking shoes to navigate the slopes and observation paths safely.
Bring a telephoto lens if you are a photographer, as the best viewpoints are situated at a distance from the dam wall.
Do not attempt to climb or cross the dam barrier, as it is strictly prohibited and dangerous.
