River
Bidasoa
68 km from source to mouth · France and Spain.
France and SpainFlows into Bay of Biscay
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.
- 0 kmErratzuat 186 m
- 2 kmElizondo3,456 people
- 23 kmDoneztebe-Santesteban1,506 people
- 24 kmSan Tiburcio (dam)
- 32 kmBisusta waterfall
- 37 kmMurgues dam
- 39 kmVentas de Yanci dam
- 45 kmLesaka2,741 people
- 46 kmNavasturen
- 47 kmFunvera dam
- 49 kmBera3,685 people
- 53 kmLas Nazas (dam)
- 65 kmBehobia International Bridge
- 65 kmPheasant Island
- 67 kmIrun61,983 people
- 68 kmSantiago Bridge, Irun-Hendaye
- 68 kmInternational Bridge
- 68 kmEuskotren bridge over the Bidasoa
- 68 kmHendaye18,102 people
- 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.
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
- 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
- Bisusta waterfallkm 22
Cascadyas is coming soonOpen Cascadyas ↗
Beaches (11)
At the mouth (25 km) and on the banks, by Coastya
- Kontxa / La Concha17 km away22.2°C
- Plage Sokoburu2.4 km away22.2°C
- Plage d'Ilbarritz21 km away22.1°C
- Grande Plage23 km away22.1°C
- Ondarreta18 km away22.2°C
- Plage Hondarribia3.2 km away22.2°C
- Playa de Fuenterrabía3.1 km away22.2°C
- 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
- Hauza7.0 km away · prominence 616 m1,304m
- Sayoa12 km away1,419m
- Xuriain14 km away1,410m
- Monte Autza6.9 km away1,304m
- Argarai15 km away1,226m
- Argintzo10 km away1,208m
- Iparla13 km away · prominence 330 m1,049m
- Larrakarte12 km away1,181m
56 more on PeakyasOpen Peakyas ↗
Islands off the mouth (5)
Within 30 km of the mouth, by Islandyas
- Santa Clara Island18 km away0.1km²
- Amuitz island4.8 km away
- Bird Island1.7 km away
- Two Twins4.2 km away
- Roche Ronde, Biarritz24 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
Bidasoa in pictures




Tributaries
Where it flows, and what flows into it
Tributaries (3)
Also: Baztan, Ezkurra, Endara
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q14352) · 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 | Cascadyas, 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.