Yubune Water | Kagawa Prefecture │ Complete Guide to Shodoshima’s Selected Waters of Japan【Access・History・Tourism Information】
“Yubune Water (Yubune no Mizu),” located in Nakayama, Shodoshima Town, Shozu District, Kagawa Prefecture, is precious mineral water that springs forth on Shodoshima within the Seto Inland Sea National Park. In 1985 (Showa 60), it was selected as one of the “100 Selected Waters of Japan” by the Ministry of the Environment, and in 1992 (Heisei 4), it was certified as “Sanuki’s Selected Waters” of Kagawa Prefecture. This spring, from which approximately 400 tons of abundant water flows daily, never runs dry even during extended periods of sunshine, and has long served as a precious water source supporting the lives of local residents.
About Yubune Water | Overview of Shodoshima’s Representative Selected Water
Yubune Water is a clear spring that emerges from the mid-slope of Mount Yubune (Mount Yubuneyama) at an elevation of approximately 400 meters, located in the central part of Shodoshima. The water source is located within the grounds of Rengeji Temple, the 44th sacred site of the Shodoshima Pilgrimage, and is beloved by pilgrims and tourists alike.
The water temperature remains stable year-round at approximately 16 degrees Celsius, with high transparency and a smooth, mellow taste. This water has been used not only as drinking water and domestic water since ancient times but has also supported regional rice cultivation as agricultural water. It plays a particularly important role as the water source for “Nakayama Senmaita,” the terraced rice paddies of Shodoshima.
Double Designation as Selected Water and Sanuki’s Selected Water
Yubune Water was designated as one of the “100 Selected Waters of Japan” by the Environmental Agency (now the Ministry of the Environment) on March 28, 1985. This is a prestigious designation with only 100 sites selected nationwide, representing comprehensive evaluation of water quality, water volume, conservation status, and accessibility.
Furthermore, on June 26, 1992, it was certified as one of ten “Sanuki’s Selected Waters” independently selected by Kagawa Prefecture. This dual designation is proof that Yubune Water is highly evaluated not only at the regional level but also nationally.
History and Origin of Yubune Water
Various theories exist regarding the origin of the name “Yubune Water,” with the most credible being based on a legend that hot springs once existed in this area. In reality, it is cold spring water rather than hot springs, but the name “Yubune” has been used for this area since ancient times.
Deep Connection with Rengeji Temple
The place where Yubune Water springs forth is within the grounds of Rengeji Temple, the 44th sacred site of the Shodoshima Pilgrimage. Rengeji Temple is a Shingon Buddhist temple and one of the eighty-eight sacred sites of the Shodoshima Pilgrimage, visited by many pilgrims. The temple’s history is ancient, and this clear water has been used in the monks’ ascetic practices and religious rituals.
The temple grounds are equipped with facilities for drawing water, and visitors are free to take this precious water home. Many people bring containers to draw this precious water.
Water Source Supporting Local Residents’ Lives
Shodoshima belongs to the Seto Inland Sea climate zone, with relatively low annual precipitation. Therefore, it has long suffered from water shortages. However, Yubune Water never runs dry even during extended sunny periods and has been carefully preserved as a precious water source for local residents.
From the Edo period through the Meiji, Taisho, and Showa periods, residents of the Nakayama district have used this water as domestic water and as agricultural water for the surrounding terraced paddies. It continues to be used as one of the water sources for the local water supply today.
Water Quality and Characteristics of Yubune Water
Abundant Spring Water Volume
The most distinctive feature of Yubune Water is its abundant spring water volume. Approximately 400 tons (400,000 liters) of water flow daily, which is equivalent to the daily water usage of approximately 1,000 average households. This stable water volume is made possible by the abundant forest on Mount Yubune storing water and allowing it to slowly percolate underground.
Water Quality Characteristics
Yubune Water is characterized by high transparency and a mild taste with a slight sweetness. The water temperature remains stable year-round at approximately 16 degrees Celsius, feeling cold in summer and relatively warm in winter.
It contains mineral components in good balance and is soft water suitable for drinking. Regular water quality inspections are conducted, ensuring safety in terms of hygiene. However, as it is natural spring water, boiling is recommended before drinking.
Natural Environment of Mount Yubune
Mount Yubune, where the water source is located, has highly natural primeval forests, with its entire area designated as a natural monument by both Kagawa Prefecture and Shodoshima Town. This abundant forest functions as a water source conservation forest, allowing rainwater to slowly permeate underground and producing stable spring water.
The mountain is covered with evergreen broadleaf forests where shii, kashi, tabu, and other evergreen broadleaf trees thrive. These forests are also rich in biodiversity, with many birds, insects, and small animals inhabiting them.
How to Access Yubune Water
Access by Public Transportation
Using bus from Tonosho Port:
- Board the Shodoshima Olive Bus “Oonude Line” from Tonosho Port
- Get off at “Kasuga Shrine Mae” bus stop (approximately 20 minutes travel time)
- Walk approximately 20 minutes from the bus stop to reach Yubune Water
Bus frequency is limited, so it is recommended to check the schedule in advance. Especially during holidays and tourist seasons, buses may become crowded.
Using bus from Ikeda Port:
You can also use Shodoshima Olive Bus from Ikeda Port, but some routes may require transfers. It is recommended to contact the bus company in advance.
Access by Automobile
From Tonosho Port:
Approximately 15 minutes from Tonosho Port via Prefectural Road 26. There are directional signs when entering the Nakayama district.
From Ikeda Port:
Approximately 10 minutes from Ikeda Port via Prefectural Road 252 and Prefectural Road 26. Access is relatively easy.
Parking Information:
There is free parking at Rengeji Temple grounds (approximately 10 regular-size vehicles). However, as it is a designated space for visitors, please refrain from long-term parking. The lot may become crowded on weekends and during tourist seasons.
Rental Car and Rental Bicycle Information
Rental services for cars, bicycles, and electric-assist bicycles are well-developed throughout Shodoshima. Several rental shops are located near Tonosho and Ikeda ports.
However, the road to Yubune Water is a mountain trail with many slopes, so if using a bicycle, choosing one with electric assist is strongly recommended. For those without confidence in their physical condition, using a rental car or taxi is more practical.
Tourist Spots Around Yubune Water
Nakayama Senmaita
Approximately 5 minutes’ walk from Yubune Water, “Nakayama Senmaita” features the terraced rice paddies characteristic of Shodoshima. Approximately 800 small paddies are arranged in a staircase pattern on a mountainside, creating scenery reminiscent of traditional rural Japan.
During spring planting season (late April to early May), paddies filled with water create a beautiful mirror-like landscape. In summer, young green rice plants sway in the breeze, and in autumn, golden rice ears can be seen. One of the water sources for these thousand paddies is Yubune Water, which has long supported terraced paddy cultivation.
Rengeji Temple (44th Sacred Site of Shodoshima Pilgrimage)
Rengeji Temple, where Yubune Water springs forth, is the 44th sacred site of the Shodoshima Eighty-Eight Sacred Sites. The temple grounds have a quiet, serene atmosphere welcoming both pilgrims and general tourists.
The main hall, statues, and stone monuments within the grounds are also worth viewing. Cherry blossoms are particularly beautiful in spring, and autumn foliage in fall, allowing enjoyment of nature through the four seasons.
Shodoshima Sacred Sites Pilgrimage
Shodoshima has 88 sacred sites following the model of the Four Country Eighty-Eight Site Pilgrimage. Starting from Rengeji Temple, visiting nearby sacred sites is also recommended.
Nearby sites include the 43rd site “Shohoji Temple” and the 45th site “Eitaiji Temple.” Pilgrimage on foot is possible, but due to distance, travel by car is typical.
Shodoshima Olive Park
Approximately 20 minutes by car from Yubune Water, “Shodoshima Olive Park” is a representative tourist facility. Located atop a hill with spreading olive groves, it offers panoramic views of the Seto Inland Sea.
The park features a Greek-style white windmill, an olive museum, herb garden, and more. You can shop for olive products and enjoy dining at the café. It is also known as a filming location for the live-action version of “Kiki’s Delivery Service.”
Angel Road
“Angel Road,” near Tonosho Port, is a sandy path that emerges from the sea only twice daily due to tidal changes. Known as a “sacred place for lovers,” it attracts many couples.
You can visit this spot when returning toward Tonosho Port after visiting Yubune Water. Check the low tide time in advance before visiting.
Kankakei
Located south of Hoshigajojo, Shodoshima’s highest peak, “Kankakei” is counted as one of Japan’s three most beautiful gorges. You can ride a ropeway to the summit and enjoy scenic views throughout the seasons.
The autumn foliage season is spectacular, attracting many visitors from across the country. It is approximately 25 minutes by car from Yubune Water.
How to Enjoy Yubune Water and Proper Etiquette
Water Drawing Etiquette
You are free to draw Yubune Water, but please observe the following etiquette:
- Bring a container: Prepare a clean container such as a plastic bottle or polycan
- Respect the order: Show consideration during crowded times
- Keep the water area clean: Clean the surrounding area after use and take all trash with you
- Avoid drawing large quantities: Keep amounts reasonable considering other users
- Boiling is recommended for drinking: As it is natural spring water, boiling before drinking is recommended rather than consuming it raw
Temple Visit Etiquette
As it is located within Rengeji Temple grounds, please observe temple visit etiquette:
- Maintain quiet: Do not speak loudly or make noise within the temple grounds
- Obtain permission for photography: Obtain permission before photographing the interior of the main hall
- Proper visitation sequence: Enter from the mountain gate, cleanse your hands at the water basin before worshiping at the main hall
- Offering coins: Place offering coins with gratitude when worshiping at the main hall
Cooperation for Environmental Conservation
Yubune Water is a precious regional asset. To pass this beautiful natural environment to future generations, please cooperate in the following:
- Take all trash with you: Many areas lack trash bins, so use a trash bag you bring
- Do not pick plants: Surrounding plants and flowers are protected
- Do not contaminate the water source: Using detergents or soap for washing is strictly prohibited
- Parking etiquette: Park only in designated parking areas
Best Seasons to Visit Yubune Water
Spring (March–May)
Spring is rice planting season at Nakayama Senmaita. From late April to early May, paddies filled with water create beautiful mirror-like scenery. Cherry blossoms also bloom within Rengeji Temple grounds, allowing you to feel the arrival of spring.
The climate is pleasant and temperate, making it ideal for tourism. Golden Week brings crowds, so weekday visits are recommended.
Summer (June–August)
Summer is when young green rice grows. The lush greenery of the thousand paddies is vibrant, offering scenery full of vitality. Yubune Water, maintaining approximately 16 degrees year-round, feels particularly refreshing on hot summer days.
However, intense sunlight and heat make hats, sunscreen, and water hydration essential.
Autumn (September–November)
Autumn is rice harvest season when golden ripened ears color the terraced paddies. Late September to early October is peak viewing. Additionally, surrounding mountains display autumn foliage, creating beautiful fall scenery.
The climate is mild, ideal for tourism. October particularly marks peak tourism season for Shodoshima, so early reservations are recommended.
Winter (December–February)
Winter is an excellent season to enjoy Yubune Water quietly with fewer tourists. You can experience the serene atmosphere of winter in clear air. Yubune Water, at approximately 16 degrees, feels relatively warm even in winter.
However, mountain areas experience severe cold, making cold weather gear essential. Additionally, snow and freezing are possible, so check road conditions in advance.
How to Reach Shodoshima and Access Information
Access by Ferry and High-Speed Boat
Multiple ferry routes operate to Shodoshima from Honshu and Shikoku:
From Okayama Prefecture:
- Okayama Port→Tonosho Port (Ferry approximately 70 minutes, High-speed boat approximately 35 minutes)
- Shin-Okayama Port→Tonosho Port (Ferry approximately 70 minutes)
- Hisui Port→Oobe Port (Ferry approximately 60 minutes)
From Hyogo Prefecture:
- Himeji Port→Fukuda Port (High-speed boat approximately 100 minutes)
- Kobe Port→Sakate Port (High-speed boat approximately 100 minutes)
From Kagawa Prefecture:
- Takamatsu Port→Tonosho Port (Ferry approximately 60 minutes, High-speed boat approximately 35 minutes)
- Takamatsu Port→Ikeda Port (Ferry approximately 60 minutes, High-speed boat approximately 35 minutes)
Accommodation Information
Shodoshima offers diverse lodging options:
- Hot spring inns: Inns where you can enjoy hot springs such as Shodoshima Onsen or Shioe Onsen
- Resort hotels: Resort-type hotels with ocean views
- Minshuku and pensions: Small-scale accommodations with homey atmosphere
- Guest houses: Budget accommodations for backpackers
- Campgrounds: Facilities for camping in nature
Few accommodations exist near Yubune Water, so most visitors stay in port towns like Tonosho or Ikeda and visit as a day trip.
Yubune Water and Shodoshima’s Food Culture
Olives and Noodles
Shodoshima is known as the birthplace of olive cultivation in Japan. The warm climate and well-draining soil are ideal for olive cultivation, with cultivation beginning in the Meiji period. The island has many olive farms, with olive oil and olive products becoming specialty items.
Shodoshima is also famous as a somen (thin noodle) production area, with “Shima no Hikari” brand hand-stretched somen produced here. The clear water, Seto Inland Sea salt, and traditional methods create somen with firm texture and smooth throat feel.
Island of Soy Sauce
Shodoshima is known as a soy sauce production area, with soy sauce brewing flourishing since the Edo period. More than 20 soy sauce breweries currently operate, producing traditionally made wooden barrel soy sauce.
Some soy sauce breweries offer tours and experiences, and you can also enjoy unique products like soy sauce soft serve ice cream.
Sea and Mountain Bounty
Surrounded by the Seto Inland Sea, Shodoshima offers abundant fresh seafood. Octopus, yellowtail, and oysters are particularly famous. Mountain products include rice and vegetables grown with Yubune Water, also highly praised.
Recommended Spots for Those Who Have Seen Yubune Water
Selected Water Spots in Kagawa Prefecture
Beyond Yubune Water, Kagawa has other waters designated as “Sanuki’s Selected Waters”:
- Shioe Hot Spring Area Water: Clear streams in the hot spring area of Shioe Town, Takamatsu
- Takei Kannon Falls: A waterfall in Mitoyo City
- Kotohiki Park Spring: Spring water in a park in Kanao City
These waters are also worth visiting.
Islands of the Seto Inland Sea
Having visited Shodoshima, consider exploring other Seto Inland Sea islands:
- Naoshima: Internationally famous as an island of contemporary art
- Teshima: An island where terraced paddies and contemporary art blend
- Ogijima: A small island known as a cat island
- Mejima: An island where the Oni Legend remains
These islands are relatively close to Shodoshima and can be visited by ferry.
Summary: Experience Shodoshima’s Nature and History at Yubune Water
Kagawa Prefecture’s Yubune Water on Shodoshima is not merely a tourist spot but a precious water source that has supported regional history, culture, and people’s lives. Selected as one of the Ministry of Environment’s 100 Selected Waters of Japan and Kagawa’s Sanuki’s Selected Waters, this clear water boasts abundant daily spring flow of 400 tons and never runs dry despite sunshine.
This water, springing forth within Rengeji Temple grounds, holds historical value as a sacred site of the Shodoshima pilgrimage and plays an important role as a water source for the surrounding Nakayama Senmaita. When visiting, observe water-drawing etiquette and cooperate in environmental conservation, maintaining awareness of preserving this precious natural heritage for future generations.
Shodoshima offers many fascinating tourist attractions beyond Yubune Water, including Olive Park, Kankakei, and Angel Road. Convenient ferry access allows enjoyment whether visiting for a day or staying overnight. The serene Seto Inland Sea climate, beautiful nature, and warm hospitality continue to captivate visitors.
Please visit Yubune Water once to experience Shodoshima’s rich nature, history, and culture. The sound of clear water and the surrounding tranquil natural environment will surely make you forget daily hustle and bustle.
