HydroBASINS lev08 watershed · #2080536830
Bassin de Dora di Valgrisenche
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 across 2 countries : Aosta, Haute-Savoie, Savoie, Torino
Sub-basin area
1 024,2km²
Upstream area
1 024,4km²
Discharge
27,08m³/s
Mean elev.
2 306m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Aosta985.6 km²96.0% of basin
- 18.6 km²1.8% of basin
- 16.9 km²1.6% of basin
- 5.6 km²0.5% of basin
10 communes (GADM L5)Available for FRA, RWA
- Chamonix-Mont-Blanc9.21 km²4% commune
- Sainte-Foy-Tarentaise7.07 km²6% commune
- Bourg-Saint-Maurice6.09 km²3% commune
- Saint-Gervais-les-Bains5.16 km²6% commune
- Les Contamines-Montjoie2.47 km²3% commune
- Séez1.90 km²4% commune
- Val-d'Isère1.67 km²1% commune
- Tignes1.43 km²2% commune
- Montvalezan0.42 km²2% commune
- Les Houches0.05 km²0% commune
22 intersecting protected areas
Parco Nazionale del Gran Paradiso
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
211.58 km² overlap
Parco Nazionale del Gran Paradiso
IUCN Not ReportedSpecial Protection Area (Birds Directive)
211.58 km² overlap
National Park
211.54 km² overlap
Ambienti Glaciali del Monte Bianco
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
123.23 km² overlap
Val Ferret
IUCN Not ReportedSpecial Protection Area (Birds Directive)
89.05 km² overlap
Ambienti calcarei d'alta quota della Valle di Rhêmes
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
15.10 km² overlap
Ambienti d'alta quota delle Combe Thuilette e Sozin
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.56 km² overlap
Ambienti d'alta quota della Valgrisenche
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.36 km² overlap
Natural habitats protection Order
1.53 km² overlap
13 more protected areassorted by overlap area
Talweg della Val Ferret
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.20 km² overlap
Réseau de vallons d'altitude à Caricion
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.47 km² overlap
Zona umida di Morgex
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.30 km² overlap
Lago di Lolair
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.28 km² overlap
Grande Sassière
IUCN IVNational Nature Reserve
0.24 km² overlap
Ambienti Xerici del Mont Torretta - Bellon
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.22 km² overlap
Contamines Montjoie - Miage - Tré la Tête
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.19 km² overlap
Contamines-Montjoie
IUCN IVNational Nature Reserve
0.19 km² overlap
La Vanoise
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.17 km² overlap
Vanoise
IUCN IINational Park - Core Area
0.14 km² overlap
Riserva naturale Lolair
IUCN IVRegional/Provincial Nature Reserve
0.13 km² overlap
Riserva naturale Marais
IUCN IVRegional/Provincial Nature Reserve
0.09 km² overlap
Pont D'ael
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 088 distinct species · 63 043 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 18 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 de Dora di Valgrisenche : 13 espèces + 5 bulles famille, 27 interactions GloBI documentées sur 4 types (connectance 17.6%, filtre Serrano α=0.2). Les 5 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°
0,8°C
Annual rain
1 682mm
Moisture idx (CMI)
0,67
Runoff
788mm/an
PET
498mm
AET
486mm
Mean slope
26,6°
Water table
808cm
Forest
44%
Crops
1%
Urban
0%
Protected
21%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)