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River

Bidasoa

68 km from source to mouth · France and Spain.

FranceSpainFrance and SpainFlows into Bay of Biscay

Follow the riverMonth by month

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

In numbers

Length

68km

Average flow

26m³/s

Basin

710km²

Drop

186m

from 186 m to 0 m

Countries

2

The journey

From source to mouth

68 km of river and 18 stops on the way: 7 towns and cities on its banks, dams, bridges and the tributaries that feed it.

186 m0 m
Erratzuat 186 m0 km
Doneztebe-Santesteban1,506 people23 km
San Tiburcio (dam)24 km
Bisusta waterfall32 km
Murgues dam37 km
Navasturen46 km
Funvera dam47 km
Bay of Biscayat 0 m68 km
020406068 km
  1. 0 kmErratzuat 186 m
  2. 2 kmElizondo3,456 people
  3. 23 kmDoneztebe-Santesteban1,506 people
  4. 24 kmSan Tiburcio (dam)
  5. 32 kmBisusta waterfall
  6. 37 kmMurgues dam
  7. 39 kmVentas de Yanci dam
  8. 45 kmLesaka2,741 people
  9. 46 kmNavasturen
  10. 47 kmFunvera dam
  11. 49 kmBera3,685 people
  12. 53 kmLas Nazas (dam)
  13. 65 kmBehobia International Bridge
  14. 65 kmPheasant Island
  15. 67 kmIrun61,983 people
  16. 68 kmSantiago Bridge, Irun-Hendaye
  17. 68 kmInternational Bridge
  18. 68 kmEuskotren bridge over the Bidasoa
  19. 68 kmHendaye18,102 people
  20. 68 kmBay of Biscayat 0 m

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

River in Spain and France

At the mouth it carries 26 m³/s on average: an Olympic pool every 98 seconds. It drops from 186 m to 0 m, 2.7 m per kilometre on average. Its basin covers 710 km².

Read more on Wikipedia

Where to start

  • IrunLargest city on its banks · 61,983 people
  • San Sebastián Airport (EAS)Nearest airport with scheduled flights, 2 km from the cityCar hire at BIQ airport (Biarritz)Discover Cars · Affiliate link
  • On the water22 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • Kayak and canoe2 put-ins and rapids mapped (OpenStreetMap)

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.

Along the river

Bidasoa: what you find on the way

  • 2DamsPresa de Arraioz
  • 28WeirsTxokotoko presa, Antigua presa de Endarlatsa and 26 more
  • 3WaterfallsOinaskako ur-jauzia, Bisustako ur-jauzia
  • 1Rapids
  • 1Canoe put-ins
  • 18Boat ramps
  • 4MarinasHondarribia - Aeropuerto, Port de Caneta, Hondarribia - Txingudi and 1 more

From OpenStreetMap, within 1.2 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Bidasoa 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
  • 11beaches at the mouth and on the banksCoastya
  • 64mountains at the sourcePeakyas
  • 5islands off the mouthIslandyas

Waterfalls (1)

On the river, by Cascadyas

  1. Bisusta waterfallkm 22

Cascadyas is coming soonOpen Cascadyas ↗

Beaches (11)

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

  1. Kontxa / La Concha17 km away22.2°C
  2. Plage Sokoburu2.4 km away22.2°C
  3. Plage d'Ilbarritz21 km away22.1°C
  4. Grande Plage23 km away22.1°C
  5. Ondarreta18 km away22.2°C
  6. Plage Hondarribia3.2 km away22.2°C
  7. Playa de Fuenterrabía3.1 km away22.2°C
  8. Plage du Miramar24 km away22.1°C

3 more on CoastyaOpen Coastya ↗

Mountains at the source (64)

Within 15 km of the source, by Peakyas

  1. Hauza7.0 km away · prominence 616 m1,304m
  2. Sayoa12 km away1,419m
  3. Xuriain14 km away1,410m
  4. Monte Autza6.9 km away1,304m
  5. Argarai15 km away1,226m
  6. Argintzo10 km away1,208m
  7. Iparla13 km away · prominence 330 m1,049m
  8. Larrakarte12 km away1,181m

56 more on PeakyasOpen Peakyas ↗

Islands off the mouth (5)

Within 30 km of the mouth, by Islandyas

  1. Santa Clara Island18 km away0.1km²
  2. Amuitz island4.8 km away
  3. Bird Island1.7 km away
  4. Two Twins4.2 km away
  5. Roche Ronde, Biarritz24 km away

Islandyas is coming soonOpen Islandyas ↗

From space

The source and the mouth, seen from orbit

Bidasoa: satellite view of the source
The source14 km across
Bidasoa: satellite view of the mouth
The mouth10 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

Bidasoa in pictures

Bidasoa ibaiaren ahoa
jmerelo · CC BY-SA 2.0
Bidasoa Sunbila Donestebe Presa 20171012 152421
Ksarasola · CC BY-SA 4.0
Bidasoa Sunbilan
Ksarasola · CC BY-SA 4.0
Bidasoako uharteak
Ernestobanpiroa · CC BY-SA 4.0

Tributaries

Where it flows, and what flows into it

Tributaries (3)

Also: Baztan, Ezkurra, Endara

Where these numbers come from

Name, length, placesWikidata (Q14352) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point 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, Coastya, 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.

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