HydroBASINS lev08 watershed · #2080566880
Bassin du Buëch
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 4 administrative regions : Alpes-de-Haute-Provence, Drôme, Hautes-Alpes, Isère
Sub-basin area
1 465,3km²
Upstream area
1 465,3km²
Discharge
18,48m³/s
Mean elev.
1 072m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1168.1 km²79.5% of basin
- 262.8 km²17.9% of basin
- 36.7 km²2.5% of basin
- 0.9 km²0.1% of basin
95 communes (GADM L5)Available for FRA, RWA
- Lus-la-Croix-Haute85.20 km²97% commune
- Saint-Julien-en-Beauchêne59.18 km²100% commune
- La Roche-des-Arnauds50.66 km²96% commune
- Montmaur49.58 km²100% commune
- Veynes43.69 km²100% commune
- Aspres-sur-Buëch43.50 km²100% commune
- Savournon40.17 km²100% commune
- La Cluse39.55 km²99% commune
- Ribiers38.12 km²100% commune
- La Faurie30.82 km²100% commune
- La Beaume29.15 km²98% commune
- L'Épine28.31 km²83% commune
- Orpierre27.75 km²100% commune
- Montjay26.79 km²100% commune
- Barret-sur-Méouge26.38 km²100% commune
- Châteauneuf-d'Oze25.57 km²96% commune
- Sigottier25.51 km²100% commune
- Rabou25.43 km²96% commune
- Lachau25.13 km²97% commune
- Montbrand25.01 km²97% commune
- Éourres24.58 km²93% commune
- Manteyer24.56 km²99% commune
- Châteauneuf-de-Chabre24.37 km²100% commune
- Laborel23.20 km²99% commune
- Laragne-Montéglin23.17 km²100% commune
- Le Saix22.10 km²99% commune
- Mison21.55 km²69% commune
- La Piarre21.17 km²99% commune
- Montclus21.11 km²100% commune
- Chanousse20.95 km²100% commune
- Saint-Pierre-d'Argençon19.95 km²100% commune
- Lazer19.55 km²90% commune
- Séderon19.49 km²96% commune
- Aspremont18.56 km²100% commune
- Trescléoux18.46 km²100% commune
- Saint-Genis18.36 km²99% commune
- Eygalayes18.35 km²99% commune
- Gap18.13 km²17% commune
- Serres17.94 km²100% commune
- Sainte-Colombe17.24 km²100% commune
- Ballons16.80 km²100% commune
- La Bâtie-Montsaléon15.25 km²100% commune
- Izon-la-Bruisse14.62 km²100% commune
- Étoile-Saint-Cyrice14.40 km²100% commune
- Salérans14.01 km²100% commune
- Furmeyer13.84 km²100% commune
- Vers-sur-Méouge13.68 km²100% commune
- Saint-Auban-d'Oze13.25 km²100% commune
- Mévouillon12.93 km²44% commune
- Chabestan12.11 km²100% commune
- Barret-de-Lioure12.03 km²35% commune
- Saint-Pierre-Avez11.76 km²100% commune
- Oze11.74 km²100% commune
- Méreuil11.21 km²100% commune
- Villebois-les-Pins10.02 km²94% commune
- Saléon10.00 km²100% commune
- Eyguians9.45 km²100% commune
- Sisteron8.93 km²17% commune
- Upaix8.90 km²38% commune
- Le Bersac7.81 km²100% commune
- Antonaves7.73 km²100% commune
- Lagrand7.12 km²100% commune
- La Haute-Beaume7.05 km²100% commune
- Villefranche-le-Château7.04 km²96% commune
- Esparron6.09 km²25% commune
- Sorbiers4.61 km²33% commune
- Noyers-sur-Jabron4.53 km²8% commune
- Montrond4.29 km²100% commune
- Nossage-et-Bénévent4.24 km²100% commune
- Agnières-en-Dévoluy2.35 km²7% commune
- Saint-Étienne-en-Dévoluy2.28 km²3% commune
- Montauban-sur-l'Ouvèze1.73 km²5% commune
- Bevons1.59 km²14% commune
- Ventavon1.24 km²3% commune
- La Bâtie-des-Fonds1.09 km²9% commune
- Tréminis0.67 km²1% commune
- Ribeyret0.52 km²3% commune
- La Freissinouse0.50 km²6% commune
- Saint-Disdier0.47 km²1% commune
- Beaurières0.40 km²2% commune
- Sigoyer0.36 km²1% commune
- Valdrôme0.32 km²1% commune
- Glandage0.23 km²0% commune
- Chauvac-Laux-Montaux0.20 km²1% commune
- Lalley0.19 km²1% commune
- Val-Maravel0.14 km²1% commune
- La Fare-en-Champsaur0.10 km²1% commune
- Boulc0.09 km²0% commune
- Les Omergues0.06 km²0% commune
- Montfroc0.06 km²0% commune
- Laye0.04 km²0% commune
- Pelleautier0.01 km²0% commune
- Saint-Vincent-sur-Jabron0.01 km²0% commune
- Les Prés0.00 km²0% commune
- Curel0.00 km²0% commune
26 intersecting protected areas
Baronnies Provençales
IUCN VRegional Nature Park
695.78 km² overlap
Dévoluy - Durbon - Charance - Champsaur
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
229.51 km² overlap
Vercors
IUCN VRegional Nature Park
85.67 km² overlap
Ceüse - montagne d'Aujour - Pic de Crigne - montagne de Saint-Genis
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
37.94 km² overlap
Landes, pelouses, forêts et prairies humides de Lus-la-Croix-Haute
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
36.19 km² overlap
Le Buech
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
24.28 km² overlap
Gorges de la Méouge
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.14 km² overlap
Pelouses, fourrés et forêts de Larran, du Pied du Mulet et de la montagne de Chabre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.53 km² overlap
Chapitre - Petit Buëch
IUCN IaForest Integral Biological Reserve
5.79 km² overlap
17 more protected areassorted by overlap area
Plateau De Bure
IUCN IVBiotope Protection Order
3.22 km² overlap
Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
2.12 km² overlap
Bois du Chapitre
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.12 km² overlap
Gorges De La Méouge
IUCN IVForest Managed Biological Reserve
1.83 km² overlap
Revuaire (De)
IUCN IVForest Managed Biological Reserve
1.40 km² overlap
Biotope Protection Order
0.68 km² overlap
Marais de Manteyer
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.66 km² overlap
Special Areas of Conservation (Habitats Directive)
0.43 km² overlap
Zones humides et rivière de la haute vallée de la Drôme
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.35 km² overlap
Hauts plateaux et contreforts du Vercors oriental
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.22 km² overlap
La Combe Obscure
IUCN IVBiotope Protection Order
0.20 km² overlap
Revuaire (De)
IUCN IaForest Integral Biological Reserve
0.13 km² overlap
bois de furgette
IUCN IVLand acquired by a regional conservatory of natural areas
0.04 km² overlap
La Durance
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.02 km² overlap
La Durance
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.02 km² overlap
sagne de correo
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
marais de manteyer
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 346 distinct species · 669 390 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin du Buëch : 24 espèces + 7 bulles famille, 46 interactions GloBI documentées sur 7 types (connectance 9.9%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
7,7°C
Annual rain
965mm
Moisture idx (CMI)
0,15
Runoff
404mm/an
PET
797mm
AET
641mm
Mean slope
16,1°
Water table
584cm
Forest
57%
Crops
18%
Urban
0%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)