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Shinano River

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River
—°2
Shinano River (Japan)

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The Shinano River is the longest river in Japan, with a total length of 367 kilometers. It originates from Mount Kobushi in the Japanese Alps and flows through Nagano and Niigata Prefectures before emptying into the Sea of Japan at Niigata City. Within Nagano Prefecture, the river is traditionally known as the Chikuma River, taking the name Shinano only after crossing the border into Niigata. Its drainage basin covers approximately 11,900 square kilometers and is vital for agriculture, particularly rice production in the fertile Echigo Plain. Historically, the river was an important commercial artery, though it was also notorious for frequent and destructive flooding. To mitigate this, the Shinano River diversion channel (Okozu Canal) was completed in 1922, ranking as one of the largest civil engineering projects in Japan. Numerous hydroelectric power plants are situated along its course, providing a steady supply of energy to the surrounding regions.

Best time to visit & climate

The most pleasant time to visit is May, Jun, Sep.

JanFebMarAprMayJunJulAugSepOctNovDec
Avg °C55710152024262318138
Rain mm1671051079585113213145141151168215

📋 Practical info

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Getting there
The scenic banks of Shinano River are exceptionally integrated into urban transit networks, placing them just a brief walk away from major train stations.
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Best season
Mild spring afternoons reveal an incredibly beautiful array of riverside blossoms, while harsh late summer monsoons periodically flood the walkways.
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Terrain & paths
The heavily frequented central segments boast smoothly paved continuous cycling tracks, gradually giving way to untamed grassy fields downstream.
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What to bring
Routine breathable urban walking attire easily suffices, but packing premium sunblock and a dependable hydration flask is immensely critical here.
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Parking
Dedicated municipal parking facilities line the adjacent concrete embankments, though they inevitably overflow during sunny weekend picnic outings.
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Safety
Entering the deceptively swift currents for independent swimming is universally prohibited; organized vessel tours remain the only secure water activity.
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Time needed
Most people allocate slightly over a single uninterrupted hour for casual exploration, whereas guided historical sunset cruises inherently take longer.

Geography

Coordinates
37.92000, 139.11000

Facts

  • The Shinano is the longest river in Japan, spanning 367 kilometers.
  • In Nagano Prefecture, the river is known as the Chikuma River.
  • The river's drainage basin covers approximately 11,900 square kilometers.
  • The Okozu diversion channel was completed for flood control in 1922.
  • The river empties into the Sea of Japan at the city of Niigata.
  • More than 150 major bridges cross the span of the Shinano River.

Explore nearby

Notable places around

NiigataNiigata8 km · SExplore →
Echigo PlainEchigo Plain30 km · SEExplore →
YahikoYahiko34 km · SEExplore →
IzumozakiIzumozaki55 km · SEExplore →
Kashiwazaki-Kariwa Nuclear Power PlantKashiwazaki-Kariwa Nuclear Power Plant70 km · SEExplore →
Sado IslandSado Island78 km · SExplore →
Echigo-YuzawaEchigo-Yuzawa89 km · EExplore →
Sado Gold MineSado Gold Mine95 km · SExplore →

Route planner — Car & Motorhome

Where do you start? We build the route here, with stops and country notes along the way.

Vehicle
Only stops with (optional):

© OpenStreetMap contributors · OpenRouteService

Sights in the town Shinano River (2)

ouun bridge📍 landmark

This important road bridge on Route 49 crosses the Shinano River, connecting the regions east of Niigata.

Niigata Rice Cracker Museum🎡 recreation

An interactive museum in Niigata where visitors can bake their own senbei rice crackers over an open fire.

Sights nearby

Frequently asked questions

How long is the Shinano River?
At 367 kilometers, it is the longest river in Japan.
Where does the Shinano River end?
It flows into the Sea of Japan at Niigata City.
Why is the river famous?
It is famous for the Nagaoka Fireworks Festival, one of the largest in Japan.
Can you take a boat trip on the river?
Yes, in Niigata there are water taxis and sightseeing boats that operate on the river.
Does the river have another name?
In Nagano Prefecture, the upper part of the river is called the 'Chikuma' River.
Shinano River: where is it located?
Shinano River is located in Japan.
Shinano River: what is there to see?
Highlights include ouun bridge, Niigata Rice Cracker Museum.
Shinano River: when is the best time to visit?
The most pleasant time to visit is May, Jun, Sep.
Shinano River: why is it worth visiting?
The Shinano River is the longest river in Japan, with a total length of 367 kilometers.
View on map → The Top 50 Attractions → OpenStreetMap →
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Nearby cities

Niigata — Shinano River (Japan)
Niigata
Niigata is the largest port city on the Sea of Japan coast in the Chubu region.
Joetsu — Shinano River (Japan)
Joetsu
A port city on the Sea of Japan, famous for Kasugayama Castle and its deep-rooted sake culture.
Itoigawa — Shinano River (Japan)
Itoigawa
A unique city on the Sea of Japan, known as a UNESCO Global Geopark and for its jade beaches.
Yahiko — Shinano River (Japan)
Yahiko
A spiritual hub in Niigata, famous for the Yahiko Shrine, hot springs, and the nearby Teradomari fishing coast.
Izumozaki — Shinano River (Japan)
Izumozaki
A historic fishing village on the Niigata coast, famous for its traditional architecture and as the birthplace of the monk Ryokan.
Sado Island — Shinano River (Japan)
Sado Island
Japan's second-largest island, famous for its historic gold mines, Kodo taiko drummers, and the rare crested ibis.

More places

Echigo Plain — Shinano River (Japan)
Echigo Plain
The largest plain on the Sea of Japan coast, known for its production of high-quality Koshihikari rice.
Kashiwazaki-Kariwa Nuclear Power Plant — Shinano River (Japan)
Kashiwazaki-Kariwa Nuclear Power Plant
Once the world's largest nuclear power plant by net electrical power rating.
Sado Gold Mine — Shinano River (Japan)
Sado Gold Mine
The most productive gold mine in Japan during the Edo period, contributing significantly to the finances of the Tokugawa shogunate.
Japanese Alps — Shinano River (Japan)
Japanese Alps
A series of mountain ranges in central Honshū, comprising the Hida, Kiso, and Akaishi Mountains.