Guida
Lake Kutcharo is a vast brackish lake located in Hamatonbetsu Town, Ezo District, northern Hokkaido, spanning approximately 27km. The lake has a unique shape, resembling a gourd, formed by two basins—Onuma (the large lake) to the southeast and Konuma (the small lake) to the northwest—connected by a narrow waterway. It is the third Ramsar Convention wetland registered in Japan and is designated by the Ministry of the Environment as a site of high importance for biodiversity. The ecosystem is remarkably diverse: the Onuma side has higher salinity due to seawater-influenced currents, while the Konuma side maintains characteristics closer to freshwater.
The name 'Kutcharo' is derived from the Ainu word 'kut-char,' meaning 'the mouth where the water flows out,' reflecting a long history of coexistence with nature. Historically, the region has practiced commercial inland water fishing for species like Shijimi clams and Wakasagi. In 1968, the area was designated as the North Okhotsk Nature Park, and in 1989, it became a Ramsar Site. Today, local residents, fishing cooperatives, and agricultural groups work together through the Lake Kutcharo Conservation Council to maintain the environment through tree planting and water purification efforts.
The greatest attraction is the spectacle of migratory birds. During spring and autumn migration seasons, thousands of Whooper Swans and tens of thousands of ducks descend upon the lake, creating an overwhelming sense of life. In winter, visitors may spot protected species such as White-tailed Eagles and Steller's Sea Eagles. The landscape is also defined by majestic sunsets over the lake and the lush vegetation of the wetlands. Additionally, the coastal sand dunes host the 'Beniya Primitive Garden,' a precious area where over 100 species of northern and wetland plants thrive.
The scenery and wildlife change significantly with the seasons. Spring and autumn are the peak times for bird watching, as the massive influx of swans and ducks provides a spectacular sight. Winter offers the chance to see large raptors like eagles amidst the harsh cold. In summer, the lake becomes a hub for leisure, including the 'Lake Kutcharo Water Festival' and activities like canoeing and windsurfing. The sunset viewed from the lakeshore is a highlight of any season, offering a tranquil end to the day.
Visitors can engage in various activities that utilize the natural environment. Summer brings water sports such as canoeing and windsurfing, as well as competitive racing events. The Waterfowl Observation Center located south of Onuma provides educational resources and information about the local ecosystem. Bird watching is a deeply immersive experience here, allowing you to observe wildlife closely and quietly. Please note that access to certain areas may be restricted during specific periods to protect the birds and prevent avian influenza.
The area surrounding Lake Kutcharo is rich in natural amenities. South of Onuma, there are well-equipped facilities including campsites, hot spring-equipped facilities, and Swan Park, making it an ideal place to rest and recharge. The nearby coastline features developed sand dunes and beach ridges, offering unique topographical views. The town of Hamatonbetsu is also relatively close, serving as a convenient base for your travels.
Protecting the natural environment and the waterfowl is crucial. Please adhere to the following guidelines: