Momiji Lake / Minowa Dam (Nagano Prefecture) Complete Guide｜Thoroughly Explained: 10,000 Autumn Leaves and Four-Season Charm
The Minowa Dam, located in Minowa Town, Kamiina District, Nagano Prefecture, is affectionately known as “Momiji Lake” and is a representative tourist destination in the Ina Valley. The late autumn scenery created by approximately 10,000 maple trees lining the lakeshore is reflected in the blue water surface, inspiring visitors. This article provides a thorough explanation of Momiji Lake’s charms throughout the four seasons and introduces in detail access methods, nearby facilities, and ways to enjoy it.
What is Momiji Lake (Minowa Dam)?
Basic Information and History of the Dam
Minowa Dam is a 72-meter-high gravity concrete dam completed in 1992. Built on the Sawa River, a tributary of the Tenryu River system, it plays an important role in flood control, maintaining normal river flow functions, and supplying tap water to the northern Ina Valley.
When the dam was completed, approximately 10,000 maple trees were planted around the lakeshore as part of regional landscape development. This initiative proved successful, and today the area has become a representative maple leaf viewing spot in Nagano Prefecture, attracting numerous tourists during late autumn.
Origin of the Name “Momiji Lake”
Although the official name is “Minowa Dam,” it was given the affectionate nickname “Momiji Lake” after the 10,000 maple trees planted around the lakeshore. This name has become widely known among local residents and tourists, and is particularly beloved by many people as “Momiji Lake” during the maple leaf season.
Located at an altitude of approximately 850 meters, this lake is surrounded by clear streams and abundant nature, making it a healing spot where visitors can enjoy beautiful scenery throughout the four seasons.
Four-Season Charm of Momiji Lake
Spring: Beauty of Fresh Greens and Clear Streams
Spring at Momiji Lake is when nature awakens from winter’s slumber, brimming with vitality. Maple tree buds burst forth, and vivid green colors the lakeshore. The clear stream, filled with snowmelt water, has high transparency, and the blue water surface reflects the surrounding fresh greenery in a refreshing beauty.
During this season, there are relatively few tourists, allowing visitors to enjoy leisurely walks in a quiet environment. The songs of wild birds and spring flowers can also be enjoyed, providing an experience of oneness with nature.
Summer: Charm as a Summer Resort
Located at an altitude of 850 meters, Momiji Lake remains relatively cool even in summer, making it ideal as a summer resort. The lakeshore, covered in deep green, provides shade, and the breeze crossing the lake brings pleasant coolness.
During summer, the lakeside campground becomes popular with families and outdoor enthusiasts. Visitors can fully enjoy outdoor leisure activities such as lakeshore walks, picnics, and camping in nature.
Autumn: Spectacular Maple Leaf Season
Best Viewing Period: Late October to Early November
Momiji Lake shines brightest during this maple leaf season. When approximately 10,000 maple trees begin to change color all at once, the entire lakeshore is wrapped in a gradient of fiery reds, oranges, and yellows.
In the clear autumn air, the maple leaves reflected in the blue water surface create an emotionally moving scene like a painting. Due to altitude differences, the timing of color changes is subtly different, allowing visitors to enjoy maple leaves for a relatively long period. This is a notable feature of the area.
During peak maple foliage, many tourists arrive by large tour buses and taxis, and many photographers and nature enthusiasts from inside and outside the prefecture visit. The landscape shows different faces depending on the time of day: the mystical scenery enveloped in morning mist at dawn, and the maple leaves softly illuminated by light at dusk.
Winter: Quiet Silver World
Winter at Momiji Lake becomes a separate world covered in snow and enveloped in silence. The deciduous maple trees wear a coat of snow, and the lake surface may freeze. During this season, there are few tourists, making it a hidden gem where you can monopolize the quiet beauty unique to winter.
Walking in the snowy landscape is a precious experience that allows you to feel both the harshness and beauty of winter nature at once.
Facilities and Spots Around Momiji Lake
Event Plaza
The event plaza developed on the lakeshore is used as a venue for regional events and activities. During the maple leaf season, special events may be held, with booths selling local specialties and food appearing.
The spacious grass area is ideal for picnicking and taking breaks, and you can see families spending time leisurely.
Minowa Dam Campground (Taruosawa Campground)
The campground adjacent to the Momiji Lake lakeshore is a popular spot for enjoying outdoor activities surrounded by nature. Tent sites and bungalows are equipped, accommodating both beginners and experienced campers.
Taking advantage of its lakeshore location, visitors can wake up gazing at the scenery reflected in the lake surface, and at night enjoy campfires under the starry sky. Camping during the maple leaf season is particularly special; a camping experience surrounded by colored trees will become an unforgettable memory.
Operating Season: Primarily spring through autumn (may close in winter)
Reservations: Advance reservations are recommended
Lakeshore Park and Walking Trails
The lakeshore has developed parks and walking trails where visitors can slowly enjoy nature in each season. The trails are relatively flat and safe for families and elderly visitors to walk.
Benches and rest shelters are placed at various points, allowing you to take breaks while viewing the lakeshore scenery. Walking during the clear morning air or leisurely strolling along the lakeshore in the soft afternoon light provides refreshment for both body and mind.
Dam Embankment Viewing
The embankment of this 72-meter-high gravity concrete dam can be viewed up close, displaying its impressive form. For dam enthusiasts, this is a must-see spot, and the view from the top of the embankment is wonderful.
When water is released, you can see the powerful flow, experiencing the strength of the dam firsthand.
Access Information
By Car
Route from Central Expressway
- Approximately 15 minutes (about 10 km) from Ihoku Interchange
- Approximately 20 minutes (about 12 km) from Komagane Interchange
Exiting the Central Expressway at Ihoku IC and proceeding via prefectural roads is the most convenient. The roads are relatively well-maintained with signage, making it possible for first-time visitors to arrive without getting lost.
Parking Information
Free parking areas are developed around the lakeshore. There are parking spaces for approximately 100 regular vehicles; however, congestion is expected during peak maple foliage (weekends from late October to early November), so visiting during morning hours is recommended.
Parking spaces for large buses are also provided, making group visits possible.
By Public Transportation
Using JR Iida Line
- About 15 minutes by taxi from Inamatsushima Station on JR Iida Line
- About 20 minutes by taxi from Kinoshita Station on JR Iida Line
For public transportation access, the distance from the station makes taxi use practical. During the maple leaf season, local taxi companies may offer tour plans, so it’s worth checking in advance.
Bus Routes
Community buses operated by Minowa Town run to the area, but with limited frequency, it’s recommended to check the timetable in advance.
Recommended Tourist Spots Around Momiji Lake
Red Buckwheat Field (Minowa Town)
Minowa Town is known as a producer of “red buckwheat,” and from late September to early October, the pink-colored red buckwheat flower fields come into bloom. It’s a perfect spot to visit just before the maple leaf season at Momiji Lake.
Takatao Castle Ruins Park
Takatao Castle Ruins Park, about 30 minutes by car away, is known as “Japan’s Best Cherry Blossoms.” In spring, approximately 1,500 Takatao cherry blossoms bloom magnificently, attracting visitors from across the country.
Mount Kyou
Recommended for hiking enthusiasts is Mount Kyou. There are intermediate-level hiking courses, and from the summit, you can enjoy the magnificent scenery of the Southern and Central Alps.
Ina City Center
About 20 minutes by car into the Ina city center, there are well-developed farm stands selling local specialties and restaurants. You can enjoy local cuisine such as Shinshu soba and Ramen (regional cuisine of the Ina area).
Precautions When Visiting
Congestion Management During Maple Leaf Season
From late October to early November, especially on weekends between 10 a.m. and 2 p.m., parking areas become congested. Visiting early morning (around 7-8 a.m.) or evening (after 4 p.m.) is recommended. Early mornings may offer mystical scenery enveloped in morning mist.
Clothing and Belongings
Located at an altitude of 850 meters, temperatures are lower than in lowland areas. Particularly in late autumn, it gets cold, requiring warm clothing.
- Spring/Autumn: Bring layering pieces
- Summer: Sun protection (hat, sunscreen)
- Winter: Thick coat, gloves, scarf
The walking trails are well-maintained, but sturdy walking shoes are recommended.
Weather Confirmation
As a mountainous area, weather changes are frequent. Check weather forecasts before visiting and prepare rain gear. The lakeshore can be particularly beautiful after rain during maple leaf season, but the ground becomes slippery, requiring caution.
Manners and Rules
- Always take trash with you
- Plant collection is prohibited
- Using fire outside designated camping areas is strictly forbidden
- When bringing pets, always use a leash and properly dispose of waste
- Drone use requires prior confirmation with management
Photography Recommended Spots
Best Photo Spots
1. Panoramic View from Dam Embankment
The angle overlooking the entire lake from the top of the dam embankment is ideal for capturing the full panorama of Momiji Lake. During the maple leaf season, you can see the entire colored lakeshore at once.
2. Lakeside Water’s Edge
For photographing the maple leaves reflected in the blue water surface, the lakeshore water’s edge is ideal. On calm, windless days, a mirror-like water surface creates perfect reflections.
3. Dappled Sunlight from Walking Trails
On walking trails like a maple tree tunnel, the contrast between light and shadow created by dappled sunlight produces beautiful photographs.
Recommended Shooting Times
- Early Morning (6:00-8:00 a.m.): Morning mist may create a mystical atmosphere for photos
- Morning (9:00-11:00 a.m.): Soft light and vivid colors photograph well
- Dusk (4:00-5:30 p.m.): Maple leaves illuminated by sunset glow golden
Local Specialties and Gourmet Information
Minowa Town Specialties
Minowa Town is an agricultural area with the following specialties.
- Apples: Cultivated using altitude differences, apples with balanced sweetness and acidity are produced
- Red Buckwheat: Rare red buckwheat with pink flowers is a Minowa Town specialty
- Highland Vegetables: Lettuce, Chinese cabbage, and other highland vegetables are cultivated
Nearby Gourmet Spots
There aren’t many restaurants directly around Momiji Lake, but within a 10-15 minute drive you’ll find:
- Shinshu Soba Restaurants: Hand-made soba using local buckwheat flour
- Agricultural Produce Direct Sales Shops: Fresh vegetables, fruits, and processed products from local farms can be purchased
- Roadside Stations: Local specialties and light meals are available
Event Information
Maple Leaf Festival
Each year, events may be held around Momiji Lake coinciding with peak maple foliage viewing. Local specialty sales booths, food vendors, and music performances draw many visitors.
As the date and content vary by year, it’s recommended to check Minowa Town’s tourism information and official websites for the latest information.
Summer Camping Events
During summer, outdoor events and nature observation activities utilizing the campground are sometimes held. Programs for family participation are available, offering opportunities to enjoy contact with nature.
Model Courses for Maximum Enjoyment of Momiji Lake
Day Trip Course (Maple Leaf Season)
7:00 a.m. Early arrival, photograph lakeshore enveloped in morning mist
8:00 a.m. Leisurely walk the lakeshore trail (approximately 1 hour)
9:30 a.m. View the dam embankment, take panoramic photos
10:30 a.m. Rest at the event plaza
11:30 a.m. Shop at nearby farm stands
12:30 p.m. Lunch at a local soba restaurant
2:00 p.m. Visit the red buckwheat field (if in season)
3:30 p.m. Return to Momiji Lake for dusk photography
5:00 p.m. Head home
1-Night, 2-Day Course (Camping)
Day 1
1:00 p.m. Arrive at Momiji Lake, check in at campground
2:00 p.m. Set up tent
3:00 p.m. Lakeshore walk
5:00 p.m. BBQ at campground
7:00 p.m. Stargazing
Day 2
6:00 a.m. Early morning lakeshore walk
7:00 a.m. Breakfast
9:00 a.m. Break camp
10:00 a.m. Visit dam
11:00 a.m. Tour nearby attractions
1:00 p.m. Head home
Frequently Asked Questions (FAQ)
Q1: When is the best time to see Momiji Lake’s maple leaves?
A1: The best viewing period is typically late October to early November. Due to altitude differences, maple leaves can be enjoyed for a relatively long period. However, the exact timing may vary depending on weather conditions that year, so it’s recommended to check the latest maple foliage information before visiting.
Q2: Is there an admission fee or parking charge?
A2: Viewing Momiji Lake is free, and parking is also free. However, if using the campground, separate usage fees apply.
Q3: Can I visit with pets?
A3: Pets can accompany you, but always use a leash and be considerate of other visitors by adhering to proper etiquette. Always clean up after your pet. For campgrounds, it’s recommended to confirm in advance whether pets are allowed.
Q4: Can wheelchair users enjoy the walk?
A4: Some lakeshore walking trails are paved and wheelchair-accessible. However, not all trails are barrier-free, so it’s recommended to confirm in advance with Minowa Town’s tourism office.
Q5: Can I visit in winter?
A5: Winter visits are possible, but snowfall and frozen road surfaces may occur, requiring winter tires or chains. Also, campgrounds may close during winter.
Q6: Are there hot spring facilities nearby?
A6: Within a 20-30 minute drive of Momiji Lake, day-use hot spring facilities are available in Ina City and Tatsuno Town. Perfect for relaxing after walks.
Q7: Can I enjoy it on rainy days?
A7: Lakeshore walks are possible on rainy days, but caution is needed as ground becomes slippery. The mist-enveloped lakeshore after rain has a mystical beauty and is popular with photographers.
Q8: Can groups visit?
A8: Group visits are possible. Large bus parking spaces are available. Weekends during peak maple foliage season become crowded, so weekday visits or advance time arrangements are recommended.
Contact Information
For detailed information about Momiji Lake (Minowa Dam) and the latest bloom/foliage information, please contact:
Minowa Town Hall Industry Promotion Division, Commerce and Tourism Section
Address: 10298 Nakaminowa, Minowa Town, Kamiina District, Nagano Prefecture
Phone: 0265-79-3111 (Main Line)
Minowa Town Tourism Association
Provides the latest tourism and event information.
Conclusion
Momiji Lake (Minowa Dam) is a spectacular tourist destination where approximately 10,000 maple trees create a stunning late autumn foliage display. The fiery maple leaves reflected in the blue water surface create an emotionally moving scene for all visitors.
Beyond just the maple leaf season, Momiji Lake offers different charms in each season: spring’s fresh greenery, summer’s refuge from heat, and winter’s quiet beauty. With well-equipped facilities including lakeshore walking trails, a campground, and an event plaza, it’s a destination enjoyable by families, outdoor enthusiasts, and photography lovers alike.
With excellent access from the Central Expressway and nearby attractions such as the red buckwheat field and Takatao Castle Ruins Park, Momiji Lake is definitely worth visiting. The rich nature of the Ina Valley and the warm hospitality of the local area await you.
The beautiful scenery created by clear streams and lakeshore throughout the four seasons will surely become a memorable experience for you.
