River
Shimanto River
196 km from source to mouth · Japan.
JapanFlows into Pacific Ocean9th longest in Japan
In numbers
Length
196km
Average flow
500m³/s
Basin
2,270km²
Drop
349m
from 349 m to 0 m
Country
1
The journey
From source to mouth
196 km of river and 4 stops on the way: 4 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 349 m
- 0 kmYusuhara3,307 people
- 27 kmShimanto15,540 people
- 94 kmNakamura34,559 people
- 102 kmShimoda32,694 people
- 102 kmPacific Oceanat 0 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Kochi prefecture, Japan
At the mouth it carries 500 m³/s on average: an Olympic pool every 5.0 seconds. It drops from 349 m to 0 m, 1.8 m per kilometre on average. Its basin covers 2,270 km², about the size of KM. 97,000 people live in it. Highest water: from June to July; lowest: January. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- NakamuraLargest city on its banks · 34,559 people
- Kochi Ryoma Airport (KCZ)Nearest airport with scheduled flights, 93 km from the cityCar hire at KCZ airport (Nankoku)Discover Cars · Affiliate link↗
- On the water2 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- From October to NovemberThe best months to visit
Shimanto River, month by month
Highest water: from June to July
Lowest water: January. Best months to visit: from October to November.
From about 37 m³/s in the lowest month to 110 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.
Plan the trip
Plan the trip: boat trips, a bed by the river, a car
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
The basin
Shimanto River: the basin in numbers
2,154 km² of land send their water to this river. This is what lives on it.
- 97,000people live in the basin
- 45/km²people per km²
- 398maverage altitude of the basin
- 2,165mmof rain a year (basin average)
- 14.5°Caverage air temperature
- 3%protected areas
What covers the basin
- 91% Forest
- 5% Cropland
- 1% Towns and cities
RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.
Along the river
Shimanto River: what you find on the way
- 5Weirs
- 1Ferry piersShimoda Fishing Port
- 1River beaches
From OpenStreetMap, within 1.4 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Shimanto River in our other atlases
What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.
3mountains at the sourcePeakyas
2islands off the mouthIslandyas
Mountains at the source (3)
Within 15 km of the source, by Peakyas
- Mount Genjigadaba13 km away1,403m
- Mount Irazu15 km away1,336m
- Suzuga-mori12 km away
Islands off the mouth (2)
Within 30 km of the mouth, by Islandyas
- Ōshima27 km away
- Kan'yō Island28 km away
Islandyas is coming soonOpen Islandyas ↗
From space
The source and the mouth, seen from orbit
Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.
Photos
Shimanto River in pictures
South KoreaWhere these numbers come from
| Name, length, places | Wikidata (Q124878) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Our other atlases | Peakyas, Islandyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST |
Every source and licence is on the data sources page.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.
beaches
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lakes
Every lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit mountains
Every summit in 3D: summit weather, the 0 °C line, huts and trails.Visit 
waterfalls
Every waterfall: height, flow month by month and when it roars.Coming soonVisit islands
Every island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit 
rivers
Every river from source to sea: the journey, the flow and the basin in numbers.You are here
canyons
Every canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit