
Guida
Tokuyama Dam is one of Japan's most impressive dams, located in Ibigawa Town, Ibi District, Gifu Prefecture. Its most striking feature is its overwhelming water storage capacity. The total storage reaches approximately 660 million cubic meters, which is roughly twice the capacity of Lake Hamana in Shizuoka Prefecture. The dam's crest length is 427 meters, a massive structure that exceeds the length of 16 Shinkansen 'Nozomi' train cars. This colossal engineering feat plays a vital role in protecting the Ibi River region from flooding and managing local water resources.
Constructed to control the flow of the Ibi River (one of the three most important rivers in Japan, the Kiso Three Rivers), Tokuyama Dam serves the essential purpose of disaster prevention and securing water resources for the region. This dam represents the pinnacle of modern Japanese civil engineering and serves as a critical infrastructure for regional safety. Managed by the Water Resources Management Organization, it has long played a multifaceted role in supporting the local community through flood control and providing water for agriculture and industry. The dam is a cultural cornerstone that supports the very foundation of life in this region.

The most captivating sight is the view from the dam crest, where you can truly feel the massive scale of the structure. The contrast between the vast, tranquil water surface and the towering wall of the dam is awe-inspiring. Visitors can also learn about the mechanics of dam operations at the 'Tokuyama Dam Museum,' which offers excellent educational content for children. When water is being discharged, the sheer power and energy of the water become visible, providing a thrilling spectacle of nature's force. Additionally, you can collect the official 'Dam Card' as a unique souvenir of your visit.
The appearance of the dam area changes beautifully with the seasons. The vastness of the reservoir is particularly emphasized during seasons when water levels are high or during seasonal transitions. The dam management office is generally open during daytime hours (9:00 AM – 5:00 PM). For the best experience, we recommend visiting during bright daylight hours to fully enjoy the scenery. As water levels and discharge status can change based on weather and season, it is common practice to check the latest information before your visit.
Around the dam, you can visually grasp the incredible scale of civil engineering. The museum provides exhibitions regarding the dam's structure and its relationship with nature, offering a deep learning experience. Collecting Dam Cards is also a popular activity among enthusiasts. The area also serves as a great base for driving tours, with nearby campsites and roadside stations (Michi-no-Eki) providing places to rest and enjoy the scenic backdrop.
The area surrounding Tokuyama Dam is dotted with spots to enjoy nature. You can enjoy camping at 'Fujihashi Camping Base' or experience the beautiful starry skies at the 'Hoshifuru Sato Small Auto Campground.' The 'Hoshifuru Sato Fujihashi' roadside station offers local specialties and rest facilities. Furthermore, the location provides easy access to other famous Gifu attractions, such as the historic Magome-juku post town and various scenic walking paths.
Since the dam is located in a natural environment, comfortable clothing and walking shoes are highly recommended for exploring. It is also wise to bring rain gear or warm clothing to adapt to changing weather conditions. Please ensure you visit during the official operating hours for the management office and museum. For the most up-to-date information regarding water discharge or dam status, we recommend checking the official website in advance.