Lake Kizaki is a scenic mountain lake in Omachi City, Nagano Prefecture, and one of the Three Lakes of Nishina. Located at the southern end of the group, it has long been a favorite destination for both local residents and travelers.
With the majestic Northern Alps rising to the west, Lake Kizaki offers beautiful scenery in every season. The lake is also known for its wide range of outdoor activities, including canoeing, stand-up paddleboarding, sailing, fishing, and camping.
From spring through autumn, the calm waters of Lake Kizaki become a playground for outdoor enthusiasts. Visitors can enjoy canoeing, SUP, sailing, and fishing while taking in views of the surrounding mountains.
Summer is particularly popular. The lake’s clear water and refreshing mountain climate make it an appealing place for families and travelers looking to escape the heat of the cities. Campsites around the shore also provide opportunities to spend the night surrounded by nature.
Whether you prefer an active day on the water or a quiet afternoon beside the lake, Lake Kizaki offers an easy way to experience the natural beauty of the Northern Alps.
One of Lake Kizaki’s most distinctive attractions is smelt fishing, which can be enjoyed throughout the year. The fish grow in the lake’s clean water and are an important local specialty.
In winter, visitors can try smelt fishing from a covered fishing boat, allowing them to stay warm while fishing on the cold mountain lake. The sheltered environment makes the experience accessible even to beginners.
For many visitors, catching the fish is only part of the fun. Freshly caught smelt can also be enjoyed as part of the local food culture, making the activity a memorable combination of outdoor recreation and regional cuisine.
From approximately mid-June to early July, water lilies bloom across the southern end of Lake Kizaki. White and pale pink flowers spread across the surface, creating a dreamlike landscape.
The seasonal display attracts photographers and visitors who come to enjoy the tranquil beauty of the lake. Reflections of the flowers and surrounding greenery on the water make this one of Lake Kizaki’s most charming early-summer scenes.
Lake Kizaki is a fault lake formed along the Itoigawa-Shizuoka Tectonic Line, one of Japan’s major geological structures. The Northern Alps rise dramatically to the west, creating a striking contrast between the mountains and the calm waters of the lake.
The lake is fed by the Nōgu River and Inaozawa River. The Nōgu River flows through Lake Aoki and Lake Nakatsuna before reaching Lake Kizaki, and eventually continues toward the Takase River.
The lake can be reached using the JR Oito Line. Shinano-Kizaki, Inao, and Uminokuchi Stations are the nearest stations, making Lake Kizaki accessible even for travelers exploring the region without a car.
Lake Kizaki Onsen is located along the lakeshore, offering a relaxing way to unwind after outdoor activities. The hot spring water is brought from nearby Kuzuyu Onsen, one of the historic hot spring areas of the Northern Alps region.
Ryokan-style inns and guesthouses are scattered around the lake, allowing visitors to combine mountain scenery, hot springs, outdoor activities, and traditional Japanese hospitality in a single trip.
Spring brings fresh greenery and flowers to the surrounding mountains. Nearby Iyajiri Marsh is known for its seasonal flowers, while June brings the magical sight of fireflies glowing around the water at night.
Summer is the busiest season at Lake Kizaki. Visitors come for swimming, camping, boating, fishing, and other outdoor activities. A fireworks festival also adds a festive atmosphere to the lakeside during the season.
In autumn, the mountains surrounding the lake turn brilliant shades of red, orange, and yellow. On calm mornings, mist may form above the water, creating a beautiful contrast between the soft clouds, colorful forests, and mirror-like lake surface.
Winter transforms the surrounding mountains into a snowy landscape. Nearby ski resorts, including Kashimayari Ski Resort and the former Yanaba Ski Area, attract visitors looking for winter activities in the Northern Alps region.
Lake Kizaki is home to a variety of fish, including carp, crucian carp, and smelt, as well as largemouth and smallmouth bass. Among them, the most intriguing is the rare fish known as Kizaki Trout.
Kizaki Trout is thought to have originated through natural hybridization involving cherry salmon, amago trout, and biwa trout. It can grow to approximately 60 centimeters in length and is known for its reddish flesh and excellent flavor.
The fish once became scarce because of overfishing. Beginning in 1985, the local fisheries cooperative and a prefectural research facility began stocking efforts, and the population has since recovered to a more stable level.
For anglers, encountering this unusual fish is one of the special attractions of Lake Kizaki.
Lake Kizaki has also experienced environmental challenges. During a period of development, nutrient enrichment caused water quality problems, and freshwater red tides occurred between 1986 and 1993.
Measures such as the development of sewerage systems and the introduction of wastewater treatment facilities have significantly improved the lake’s water environment.
Water clarity changes depending on the season and conditions, but visibility can reach approximately 8 meters. The continuing efforts to protect the lake have helped preserve its appeal as a beautiful natural destination.
The scenery around Lake Kizaki has appeared in numerous Japanese films and television productions. Notable examples include “Haku-sen Nagashi,” “Otoko wa Tsurai yo,” and “The Inugamis.”
The combination of tranquil water, mountain scenery, forests, and lakeside settlements creates a cinematic landscape with a strong sense of atmosphere. Fans of Japanese film may recognize locations while exploring the lake and its surroundings.
Lake Kizaki also has a special connection with Japanese anime culture. It became widely known among anime fans after appearing as a setting for the early-2000s series “Please Teacher!” and “Please Twins!”
Fans began visiting the real-life locations associated with the series, turning Lake Kizaki into a destination for what is known in Japan as an anime pilgrimage.
The local community has also embraced this connection as part of regional tourism, creating anime-themed products such as specially labeled sake and other goods inspired by the characters and stories.
The area around Lake Kizaki offers several facilities and attractions for visitors. These include Lake Kizaki Campsite, outdoor SUP and kayak tours, an outdoor sauna facility, and the POW WOW campground and outdoor recreation area.
Other places of interest include Seikotei, the Shinya Seikai Nishimaru Memorial Museum, Morijo Castle Site, and Abe Shrine. Together, these destinations add cultural and historical depth to a visit beyond the lake itself.
Lake Kizaki brings together the scenery of the Northern Alps, clear mountain water, outdoor recreation, local fishing traditions, hot springs, and popular culture.
From paddling across the lake on a summer morning and watching water lilies bloom in early summer to enjoying smelt fishing from a warm covered boat in winter, the experience changes dramatically with the seasons.
For travelers exploring Omachi and the Northern Alps, Lake Kizaki is a destination where mountain scenery, lakeside relaxation, local food, history, and Japanese pop culture can all be experienced in one place.