Tatara Marsh is a scenic wetland stretching across Tatebayashi City and Ora Town in Gunma Prefecture. It is one of a group of lakes and wetlands formed in the low-lying area between the Tone River and Watarase River.
The marsh covers approximately 80 hectares and has a shoreline of about 7 kilometers. Although most of the actual marsh lies within Tatebayashi City, its surroundings include a prefectural park and areas dedicated to nature observation, making it a popular destination for enjoying the natural scenery of the region throughout the year.
Tatara Marsh is also one of the components of Satoyama and Wetland Culture “SATO-NUMA”, the water-based cultural heritage of Tatebayashi that was recognized as a Japan Heritage site in 2019. The marsh has long been closely connected with the area’s natural environment, culture, and everyday life.
In winter, swans migrate here from Siberia, creating one of the area’s most distinctive seasonal sights. Visitors can enjoy birdwatching, walking, fishing, and relaxing in the natural surroundings.
Surrounding the marsh is the expansive Gunma Prefectural Tatara Marsh Park, a large natural park developed to make the most of the area’s diverse environment. The park covers approximately 98 hectares across Tatebayashi City and Ora Town.
A variety of landscapes can be found around the marsh, including wetlands, wooded areas, and farmland. These environments provide opportunities for nature observation, recreation, and peaceful walks.
The park is also known for its seasonal flowers. In spring, more than 100 cherry trees come into bloom, filling the park with beautiful blossoms. From late April through May, a wisteria trellis approximately 130 meters long becomes covered in flowers, attracting many visitors.
With spacious lawns and playground equipment, the park is also a popular destination for families.
The Tatara Marsh area contains a variety of habitats, including wetlands, reed beds, and woodland. As a result, it supports a rich diversity of birdlife. Approximately 100 species of birds can be observed throughout the year, making the area a well-known birdwatching destination.
During winter, Whooper Swans and Tundra Swans migrate here from Siberia. The area around Gaba Marsh, on the northern side of Tatara Marsh, serves as an important wintering ground.
The swans typically remain in the area from early November to around mid-March. Their graceful movements across the water have become a characteristic winter sight, attracting photographers and nature enthusiasts.
Other birds that can be spotted include ospreys, Northern Goshawks, and kingfishers, as well as various waterfowl. Migratory shorebirds such as sandpipers and plovers stop here during spring and autumn.
In summer, visitors can sometimes see large numbers of swallows returning to the reed beds to roost. Watching them fly rapidly overhead and skim across the wetlands can be an impressive sight.
Located on the eastern side of the marsh, this area includes a nature observation pond and a biotope designed to support local ecosystems.
Local volunteers participate in conservation activities here, including efforts to restore plants that once grew around Tatara Marsh and preserve the surrounding woodland. The area also serves as a place for environmental education, allowing visitors and local residents to learn while experiencing nature firsthand.
On the western side of the park is a popular recreational area for families. It features combination playground equipment, slides, rope-climbing structures, and other facilities.
The spacious lawn provides plenty of room for children and adults to relax and enjoy time outdoors.
The northern section of the park is centered around the wetlands near Gaba Marsh, where swans gather during winter.
The area provides excellent conditions for birdwatching and attracts many bird enthusiasts and photographers. Reed beds and wetlands provide habitats for a wide range of plants and animals, allowing visitors to experience the richness of the local ecosystem.
A small island known as Ukishima Benzaiten lies on the waters of Tatara Marsh and has long been a place of religious devotion.
The site is traditionally associated with the “Taiheiki,” a famous medieval Japanese historical epic. This connection gives the island an additional place in the cultural history of the region.
In spring, the walkway leading to Benzaiten is lined with cherry blossoms, creating a beautiful waterside scene. On May 5, the Ukishima Benzaiten Festival is held, while events such as traditional tea gatherings and morning markets take place in the surrounding park.
Tatara Marsh was once known as one of the habitats of the extremely rare aquatic plant Takano-hoshi-kusa, a species of the pipewort family.
It was discovered in 1910 and named by the renowned Japanese botanist Tomitaro Makino. It was particularly notable as the only fully submerged species of its family known in Japan.
However, the plant gradually disappeared because of over-collection for specimens, deterioration of water quality, land reclamation, and other environmental changes. It is believed to have become extinct sometime between the 1950s and 1960s.
Today, only pressed specimens preserved in museums and other collections remain. The story of Takano-hoshi-kusa serves as a reminder of the importance of protecting wetlands and their delicate ecosystems.
In recent years, active conservation efforts have been carried out around Tatara Marsh. Local elementary and junior high schools and community organizations participate in activities such as cleaning the area and providing food for swans while taking measures to prevent injuries to the birds.
Local residents have also established organizations such as the Association for the Preservation of Tatara Marsh Nature Park. These groups work on projects including the restoration of reed beds and conservation of aquatic plants.
Through these community-based efforts, local residents continue to work toward passing the rich natural environment of Tatara Marsh on to future generations.
Location: Tatebayashi City and Ora Town, Ora District, Gunma Prefecture
By car: Approximately 20 minutes from the Tatebayashi Interchange on the Tohoku Expressway.
By train: Approximately 15 minutes on foot from Narushima Station on the Tobu Koizumi Line.
Tatara Marsh is one of Gunma Prefecture’s notable destinations for experiencing nature, seasonal scenery, and birdlife. From cherry blossoms and wisteria in spring to migrating swans in winter, the landscape changes throughout the year.
Its wetlands, woodlands, and waterways provide a habitat for diverse wildlife, while places such as Ukishima Benzaiten preserve the area’s cultural heritage. For visitors looking for a peaceful escape surrounded by nature, Tatara Marsh offers an opportunity to experience both the natural beauty and historical traditions of Tatebayashi.