HydroBASINS lev08 watershed · #2080554660
Bassin de la Bonne
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 2 administrative regions : Hautes-Alpes, Isère
Sub-basin area
372,4km²
Upstream area
372,5km²
Discharge
6,15m³/s
Mean elev.
1 672m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 372.8 km²99.9% of basin
- 0.5 km²0.1% of basin
29 communes (GADM L5)Available for FRA, RWA
- Valjouffrey116.63 km²91% commune
- Lavaldens55.77 km²99% commune
- Le Périer47.79 km²100% commune
- Chantelouve31.15 km²92% commune
- Valbonnais23.66 km²100% commune
- Entraigues21.19 km²100% commune
- Oris-en-Rattier18.77 km²100% commune
- Nantes-en-Ratier12.00 km²100% commune
- Saint-Laurent-en-Beaumont8.99 km²70% commune
- La Valette7.74 km²100% commune
- Siévoz7.43 km²100% commune
- La Morte5.18 km²27% commune
- Saint-Michel-en-Beaumont2.99 km²36% commune
- Sousville2.81 km²100% commune
- La Mure2.46 km²29% commune
- Villard-Saint-Christophe2.03 km²14% commune
- Saint-Honoré1.43 km²10% commune
- Saint-Christophe-en-Oisans0.92 km²0% commune
- Ponsonnas0.90 km²32% commune
- Le Bourg-d'Oisans0.83 km²1% commune
- Vénosc0.59 km²1% commune
- Saint-Pierre-de-Méaroz0.50 km²11% commune
- La Salette-Fallavaux0.41 km²2% commune
- Aspres-lès-Corps0.31 km²2% commune
- Villard-Reymond0.26 km²2% commune
- Villard-Notre-Dame0.25 km²2% commune
- Villar-Loubière0.16 km²1% commune
- Ornon0.08 km²0% commune
- Saint-Maurice-en-Valgodemard0.02 km²0% commune
10 intersecting protected areas
Les Ecrins
IUCN Not ReportedSpecial Protection Area (Birds Directive)
121.42 km² overlap
Ecrins
IUCN IINational Park - Core Area
120.53 km² overlap
Massif de la Muzelle
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
115.29 km² overlap
National Park - Buffer zone/Area of adhesion
60.42 km² overlap
Forêts, landes et prairies de fauche des versants du Col d'Ornon
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
27.59 km² overlap
Landes, tourbières et habitats rocheux du Massif du Taillefer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.94 km² overlap
Haut-Béranger
IUCN IVNational Nature Reserve
0.95 km² overlap
Lauvitel
IUCN IaNational Park - Integrale Reserve
0.29 km² overlap
Marais De Nantes En Rattier
IUCN IVBiotope Protection Order
0.22 km² overlap
1 more protected areassorted by overlap area
Marais Des Révoulins
IUCN IVBiotope Protection Order
0.08 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 886 distinct species · 737 487 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 la Bonne : 20 espèces reliées par 53 interactions GloBI sur 4 types (connectance 17.7%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
4,3°C
Annual rain
1 265mm
Moisture idx (CMI)
0,44
Runoff
511mm/an
PET
661mm
AET
596mm
Mean slope
29,0°
Water table
961cm
Forest
72%
Crops
5%
Urban
0%
Protected
85%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)