HydroBASINS lev08 watershed · #2080556700
Bassin de Torrent de Saint-Maurice
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
230,1km²
Upstream area
230,1km²
Discharge
4,32m³/s
Mean elev.
1 957m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 222.2 km²96.3% of basin
- 8.5 km²3.7% of basin
13 communes (GADM L5)Available for FRA, RWA
- La Chapelle-en-Valgaudémar125.23 km²98% commune
- Saint-Maurice-en-Valgodemard37.00 km²99% commune
- Villar-Loubière21.36 km²99% commune
- Saint-Firmin15.47 km²72% commune
- Saint-Jacques-en-Valgodemard14.70 km²98% commune
- Valjouffrey6.64 km²5% commune
- Chauffayer4.45 km²40% commune
- Saint-Christophe-en-Oisans1.82 km²1% commune
- Champoléon1.67 km²2% commune
- Les Costes1.31 km²15% commune
- La Motte-en-Champsaur0.74 km²1% commune
- Vallouise0.22 km²0% commune
- Aspres-lès-Corps0.06 km²0% commune
6 intersecting protected areas
Les Ecrins
IUCN Not ReportedSpecial Protection Area (Birds Directive)
130.86 km² overlap
Ecrins
IUCN IINational Park - Core Area
129.03 km² overlap
National Park - Buffer zone/Area of adhesion
101.62 km² overlap
Valgaudemar
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
79.51 km² overlap
National Nature Reserve
1.51 km² overlap
Vallon des Bans - Vallée du Fournel
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 739 distinct species · 551 348 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Torrent de Saint-Maurice : 18 espèces reliées par 93 interactions GloBI sur 6 types (connectance 18.8%, filtre Serrano α=0.2). 14 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°
3,1°C
Annual rain
1 340mm
Moisture idx (CMI)
0,51
Runoff
521mm/an
PET
600mm
AET
554mm
Mean slope
30,7°
Water table
1 142cm
Forest
42%
Crops
3%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)