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River

Tone River

322 km from source to mouth · Japan.

JapanJapanFlows into Kashima Sea2nd longest in Japan

Follow the riverMonth by month

SourceMouthTakasakiKogaNaritaToride
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

322km

Average flow

260m³/s

Basin

16,840km²

Drop

846m

from 844 m to -2 m

Country

1

The journey

From source to mouth

322 km of river and 68 stops on the way: 35 towns and cities on its banks, dams, bridges and the tributaries that feed it.

844 m-2 m
Mount Ōminakamiat 844 m0 km
Fujiwara Dam21 km
Maebashi331,849 people89 km
Takasaki372,639 people95 km
Menuma27,684 people134 km
Lake Miyuki0.6 km²175 km
Koga138,237 people178 km
Inzai103,084 people237 km
Narita130,689 people256 km
Lake Sotonasakaura41 km²288 km
Kashima Seaat -2 m322 km
0100200322 km
  1. 0 kmMount Ōminakamiat 844 m
  2. 6 kmYagisawa Dam
  3. 11 kmLake Naramata1.6 km²
  4. 12 kmSudagai Dam
  5. 21 kmFujiwara Dam
  6. 43 kmMinakami18,383 people
  7. 49 kmAkaya Rivertributary
  8. 52 kmSagiishibashi bridge
  9. 52 kmNumata46,908 people
  10. 54 kmKatashina Rivertributary
  11. 55 kmMorishita6,953 people
  12. 60 kmTanashita Fudo Waterfalls
  13. 73 kmAgatsuma Rivertributary
  14. 74 kmShibukawa76,098 people
  15. 89 kmMaebashi331,849 people
  16. 95 kmShōwa Ōhashi Bridge
  17. 95 kmTakasaki372,639 people
  18. 102 kmTamamura36,367 people
  19. 108 kmIshigami30,343 people
  20. 109 kmKarasu Rivertributary
  21. 112 kmBandō Ōhashi Bridge
  22. 114 kmHonjō78,569 people
  23. 117 kmSakai-nakajima31,268 people
  24. 121 kmJōbu Ōhashi Bridge
  25. 132 kmTosui Bridge
  26. 134 kmMenuma27,684 people
  27. 140 kmAkaiwa10,861 people
  28. 144 kmGyōda-shi78,488 people
  29. 145 kmTone Diversion Weir
  30. 148 kmŌwa25,522 people
  31. 149 kmShōwa Bridge
  32. 149 kmŌ-zanuki10,882 people
  33. 159 kmItakura14,083 people
  34. 165 kmSaitama-o-hashi
  35. 172 kmTonegawa River Railway Bridge
  36. 173 kmTonegawa Bridge
  37. 173 kmKurihashi27,813 people
  38. 174 kmWatarase Rivertributary
  39. 175 kmLake Miyuki0.6 km²
  40. 178 kmKoga138,237 people
  41. 180 kmShin-Tonegawa Bridge
  42. 185 kmSakai Ōhashi Bridge
  43. 185 kmSakai24,201 people
  44. 203 kmMefuki Ōhashi Bridge
  45. 216 kmMoriya68,777 people
  46. 218 kmKinu-gawa Rivertributary
  47. 218 kmShin-Ōtone Bridge
  48. 223 kmTennodai7,385 people
  49. 228 kmToride104,524 people
  50. 233 kmKokai Rivertributary
  51. 235 kmSakae Bridge
  52. 236 kmFukawa15,340 people
  53. 237 kmInzai103,084 people
  54. 246 kmAjiki20,127 people
  55. 252 kmNagasao8,231 people
  56. 256 kmNarita130,689 people
  57. 266 kmKōzaki5,884 people
  58. 275 kmLake Kasumigaura168 km²
  59. 277 kmSuigō Ōhashi Bridge
  60. 278 kmKatori71,391 people
  61. 278 kmKatori-shi74,469 people
  62. 279 kmSawara47,199 people
  63. 288 kmLake Sotonasakaura41 km²
  64. 294 kmOmigawa25,763 people
  65. 295 kmKurobe Rivertributary
  66. 297 kmKamisu95,471 people
  67. 298 kmSukayama13,228 people
  68. 318 kmChōshi54,570 people
  69. 318 kmInubōsaki Lighthouse
  70. 322 kmKashima Seaat -2 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River in Japan

At the mouth it carries 256 m³/s on average: an Olympic pool every 9.8 seconds. It drops from 844 m to -2 m, 2.6 m per kilometre on average. Its basin covers 16,840 km², about the size of SZ. 8.5 million people live in it. Highest water: October. Dams and reservoirs hold back a large share of its water (20% of a year's flow).

Read more on Wikipedia

Where to start

  • TakasakiLargest city on its banks · 372,639 people
  • Shinshu-Matsumoto Airport (MMJ)Nearest airport with scheduled flights, 98 km from the cityCar hire at HND airport (Tokyo)Discover Cars · Affiliate link
  • On the water7 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • From April to July and OctoberThe best months to visit

Tone River, month by month

Highest water: October

Best months to visit: from April to July and October.

120
4°45 mmJan
110
4°61 mmFeb
160
7°87 mmMar
210
13°103 mmApr
250
17°122 mmMay
310
21°165 mmJun
320
25°148 mmJul
320
26°148 mmAug
370
22°184 mmSep
430
16°169 mmOct
370
11°82 mmNov
230
6°49 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 110 m³/s in the lowest month to 430 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

Car hire at HND airport (Tokyo)Discover CarsSee 

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

Tone River: the basin in numbers

15,908 km² of land send their water to this river. This is what lives on it.

Heavily regulatedReservoirs can hold 20% of a year's flow: dams shape its seasons.
  • 8.5millionpeople live in the basin
  • 539/km²people per km²
  • 440maverage altitude of the basin
  • 1,494mmof rain a year (basin average)
  • 11.8°Caverage air temperature
  • 20%protected areas
  • 1.7%covered by lakes
  • 1.6km³held in reservoirs

What covers the basin

  • 39% Forest
  • 21% Cropland
  • 37% 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

Tone River: what you find on the way

  • 10DamsNaramata Dam and 9 more
  • 69Weirs
  • 4LocksYokotone Lock Gate and 3 more
  • 1Waterfalls
  • 4Boat ramps
  • 2Ferry piersAkaiwa tosen
  • 1Boat rentals

From OpenStreetMap, within 1.9 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Tone 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.

  • 1waterfall on the riverCascadyas
  • 4lakes on its wayLakeyas
  • 1beach at the mouth or on the banksCoastya
  • 28mountains at the sourcePeakyas

Waterfalls (1)

On the river, by Cascadyas

  1. Tanashita Fudo Waterfallskm 54

Cascadyas is coming soonOpen Cascadyas ↗

Lakes and reservoirs (4)

Lakes it flows through, by Lakeyas

  1. Lake Naramatakm 101.6km²
  2. Lake Miyukikm 1570.6km²
  3. Lake Kasumigaurakm 246 · 4 m deep168km²
  4. Lake Sotonasakaurakm 25841km²

Lakeyas is coming soonOpen Lakeyas ↗

Beaches (1)

At the mouth (25 km) and on the banks, by Coastya

  1. Kashima-ura2.9 km away24.7°C

Open Coastya ↗

Mountains at the source (28)

Within 15 km of the source, by Peakyas

  1. Mount Hiragatake8.5 km away2,141m
  2. Mount Echigo-Komagatake7.9 km away2,003m
  3. Nakanodake4.0 km away2,085m
  4. Mount Makihata15 km away1,967m
  5. Mount Keizuru14 km away2,004m
  6. Arasawa Dake6.5 km away1,969m
  7. Mount Ushi14 km away1,962m
  8. Usagi Dake1.3 km away1,926m

20 more on PeakyasOpen Peakyas ↗

From space

The source and the mouth, seen from orbit

Tone River: satellite view of the source
The source14 km across
Tone River: satellite view of the mouth
The mouth17 km across

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

Tone River in pictures

KurihashiSuiiKansokujo2005-6
No machine-readable author provided. Kinori assumed (based on copyright claims). · Public domain
Minakami Onsen Tone River view from Yosano Akiko Park
photo: Qurren ( talk ) Taken with Canon PowerShot G9 X · CC BY-SA 4.0
Kōnodai tonegawa LCCN2008660252
Andō, Hiroshige, 1797-1858, artist · Public domain
ToneRiver Ootonebashi
Taketarou · CC BY-SA 3.0

Tributaries

Where it flows, and what flows into it

Tributaries (19)

Also: Agatsuma River, Watarase River, Kinu-gawa River, Karasu River, Katashina River, Kurobe River, Koyama River, Kokai River, Naramata River, Akaya River, Ono River, Hirose River, Tega River, Nagato River, Fuku River, Yubiso River, Numao River, Osuka River, Usune River

Nearby

Rivers nearby

Arakawa RiverJapanJapan173 km30 m³/s86 km awayTama RiverJapanJapan138 km37 m³/s98 km awayFuji RiverJapanJapan128 km63 m³/s209 km awayShinano RiverJapanJapan367 km460 m³/s284 km awayAbukuma RiverJapanJapan239 km67 m³/s256 km awayAgano RiverJapanJapan210 km450 m³/s284 km awayMogami RiverJapanJapan229 km250 m³/s359 km awayNagara RiverJapanJapan166 km120 m³/s377 km away

Where these numbers come from

Name, length, placesWikidata (Q177452) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Our other atlasesCascadyas, Lakeyas, Coastya, Peakyas — 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.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit