One of Japan’s Top 100 Cherry Blossom Spots
A Lakeside Covered in Thousands of Cherry Trees
The greatest attraction of Shichikawa Dam is its spectacular row of cherry trees. To commemorate the completion of the dam, local residents planted approximately 3,000 Somei Yoshino cherry trees around the reservoir.
Today, the trees stretch for approximately 5 km around the lakeshore, creating an impressive spring landscape. The beauty of the area has received national recognition, and in 1989, Shichikawa Dam was selected as one of the “100 Best Cherry Blossom Viewing Sites in Japan.”
The pale pink blossoms contrast beautifully with the blue surface of the lake and the fresh green of the surrounding mountains. The combination creates a peaceful yet spectacular landscape that attracts visitors from throughout the region.
Spring Cherry Blossom Festival
The cherry blossoms usually reach their peak from late March to early April. During this period, the area hosts the Sada Cherry Blossom Festival, giving visitors an opportunity to enjoy the beautiful scenery together with local festivities.
The lakeside is attractive during the daytime, when sunlight illuminates the cherry trees and surrounding mountains. In the evening, lanterns are lit along the lakeshore, creating a magical atmosphere and allowing visitors to enjoy cherry blossoms at night.
The combination of illuminated trees, the quiet surface of the reservoir, and the surrounding mountains creates a particularly atmospheric scene that is popular with photographers and visitors looking for a memorable hanami experience.
Enjoy the Scenery Along the Lakeshore
A Relaxing Walk Among the Cherry Trees
The lakeside of Shichikawa Dam is also an enjoyable place for a leisurely walk. Following the road along the reservoir, visitors can admire rows of cherry trees reflected on the calm surface of the water.
The cherry blossoms blend naturally with the surrounding mountains and forests, creating a peaceful landscape that is ideal for a slow-paced sightseeing experience.
Driving along the lakeshore is another popular way to enjoy the scenery. During spring, the road becomes a scenic route through one of the most attractive cherry blossom areas in the Kinan region of Wakayama.
Because much of the natural forest around the reservoir remains intact, visitors can enjoy more than just cherry blossoms. The mountains take on a different appearance with each season, making the area worth visiting throughout the year.
Panoramic Views from Kamiji Bridge
Upstream from the dam is Kamiji Bridge, known as the longest suspension bridge over the Kozagawa River. The bridge is approximately 200 meters long and offers beautiful views of the reservoir and the cherry trees below.
From the bridge, visitors can look out over the lake and enjoy a panoramic view in which the cherry blossoms, water, and surrounding mountains appear to form a single landscape.
During the spring blossom season, the bridge is a popular photography spot. It is also a wonderful place to pause and appreciate the scale and beauty of the natural surroundings.
Discover the Rare Kumano Cherry
A Wild Cherry Tree Native to the Kii Peninsula
The area around Shichikawa Dam is home not only to Somei Yoshino cherry trees but also to the rare Kumano cherry, known in Japanese as Kumano-zakura.
This wild species of cherry is native to southern parts of the Kii Peninsula. It was officially recognized as a distinct new species in 2018. Its flowers range from white to pale pink, and it generally blooms slightly earlier than Somei Yoshino cherries.
For many years, Kumano cherry trees were considered to be a type of wild mountain cherry. However, research revealed that they were genetically and botanically distinct enough to be recognized as an independent species.
Because Kumano cherries naturally occur only in limited areas of southern Wakayama and the surrounding Kii Peninsula, they are a particularly valuable part of the region’s natural heritage. Around Shichikawa Dam, visitors may encounter these trees blooming quietly among the natural forests.
Fishing and Outdoor Recreation
Enjoy the Peaceful Reservoir
Shichikawa Dam Reservoir is also popular for outdoor recreation, including black bass fishing. Surrounded by mountains and forests, the quiet lake provides an opportunity to slow down and enjoy the peaceful atmosphere of the Kozagawa area.
The surrounding forests also provide opportunities for birdwatching and nature walks. Visitors can enjoy observing wildlife and experiencing the changing scenery of the mountains.
While spring is undoubtedly the most famous season because of the cherry blossoms, the area is also attractive in summer, when the mountains are covered in deep green foliage, and in autumn, when colorful leaves decorate the landscape. Even in winter, the quiet lakeside scenery has its own charm.
A Valuable Civil Engineering Heritage Site
Engineering Technology from the Postwar Era
Shichikawa Dam is significant not only for its natural scenery but also for its historical value as a civil engineering project.
In 2019, the dam was selected as a Civil Engineering Heritage Site by the Japan Society of Civil Engineers, recognizing it as a highly valuable example of dam engineering from Japan’s postwar period.
One particularly notable feature is the high-pressure sluice gate installed in the dam’s normal flood-discharge system. It is considered one of the oldest hydraulic high-pressure slide gates of its kind in Japan.
The gate continues to operate under high water pressure, providing a fascinating example of the advanced engineering technology available when the dam was constructed. For visitors interested in infrastructure and engineering, the dam offers a different perspective on Japan’s postwar development.
How to Get There
Access by Train and Bus
Shichikawa Dam can be reached by car in approximately 35 minutes from JR Koza Station on the Kisei Main Line.
Visitors can also use the Kozagawa Town Community Bus. Get off at the Sada Sakura Park bus stop, from where the lakeside area is just a short walk away.
Access by Car
By car, the dam is approximately 40 minutes from the Susami-Minami Interchange of the Kisei Expressway, via National Route 42.
During the peak cherry blossom season, the area can become busy with visitors, so it is recommended to allow plenty of time when planning your journey.
A Beautiful Seasonal Destination in Kozagawa
Shichikawa Dam and its cherry blossom-lined lakeshore are among the most beautiful spring attractions in Kozagawa Town. The landscape combines thousands of cherry trees carefully planted by local residents with peaceful waters and the surrounding mountains.
In spring, visitors can enjoy magnificent cherry blossoms. Summer brings lush green forests, while autumn transforms the mountains with vivid foliage. Winter offers a quieter and more serene lakeside landscape.
Whether you come to admire the famous cherry blossoms, photograph the scenery from Kamiji Bridge, discover the rare Kumano cherry, enjoy outdoor recreation, or simply relax beside the water, Shichikawa Dam offers a chance to experience the natural beauty of the Kozagawa area at a leisurely pace.
When exploring southern Wakayama, take some time to visit Shichikawa Dam and experience the harmony of water, mountains, forests, and cherry blossoms that makes this area such a memorable destination.