Guide
Lake Utonai is a freshwater lake located in the eastern part of Tomakomai, Hokkaido. The area features a unique topography with surrounding lowlands and various marshes, such as Benten Numa. Covering an area of approximately 2.75 hectares, it holds a significant place in history as Japan's first designated Bird Sanctuary. Today, it is recognized globally as a Ramsar Convention wetland, preserving a vital ecosystem. The landscape is characterized by rich natural vegetation, including aquatic plants like Takaramo (Sugi-namazu) and water primrose, alongside vast clusters of reeds and cattails.
The name 'Utonai' is derived from the Ainu language 'utnay-to,' meaning 'the marsh of Utnay.' Originally, the area was known as 'Kimunt' (mountain marsh) or 'Kimuketo' (deep mountain marsh). However, it became known as 'Utunai' (referring to ribs or a river) because the way the rivers flow from the lake resembles a spine and ribs. In 1981, the Japanese Ornithological Society designated it as Japan's first Bird Sanctuary, and in 1991, it became the fourth Ramsar site in Japan. While leisure facilities like hot springs once existed nearby, the priority has shifted entirely to nature conservation.
The greatest draw of Lake Utonai is its role as a crucial stopover for migratory birds. During peak migration seasons, visitors can witness the awe-inspiring sight of tens of thousands of geese and swans. With over 250 bird species recorded, the variety of wildlife changes beautifully with the seasons. Even in winter, when much of the lake is frozen, some birds remain in the area, sometimes aided by local feeding efforts. It is a precious spot to experience the natural cycle of life.
The types of birds you can observe vary significantly by season. During migration periods, the sky is often filled with massive flocks of birds. In winter, the scenery changes dramatically as the lake freezes over. Interestingly, because the flight paths for aircraft heading to New Chitose Airport pass directly over the lake, you may see white swans soaring through the sky from the ground during their southern approach. We recommend adjusting your visit time based on the season and weather for the best views.
The primary activity is birdwatching. You can enjoy the serene landscape while strolling along the wetlands and lakeshore. The 'Utonai Lake Sanctuary Nature Center' is located nearby, offering opportunities to deepen your understanding of the local ecosystem. As this is a protected nature reserve, visitors are asked to observe the environment quietly and respectfully.
National Route 36 runs to the west of the lake, providing good access. The surrounding area is well-suited for learning about environmental conservation through various local facilities. While the area once hosted more leisure-oriented facilities, it is now a peaceful sanctuary for nature.
As this is a protected area, maintaining silence is crucial for the wildlife. Please follow these guidelines: