HydroBASINS lev08 watershed · #7080338230
Bassin de Rivière Trenche
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 : Le Domaine-du-Roy, Le Haut-Saint-Maurice
Sub-basin area
844,9km²
Upstream area
2 936,8km²
Discharge
47m³/s
Mean elev.
380m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- 579.1 km²68.3% of basin
- 268.2 km²31.7% of basin
14 intersecting protected areas
Proposed biodiversity reserve
8.95 km² overlap
02251R005 Biological Refuge
IUCN IVBiological refuge
5.32 km² overlap
04251R506 Biological Refuge
IUCN IVBiological refuge
3.09 km² overlap
02251R007 Biological Refuge
IUCN IVBiological refuge
2.80 km² overlap
02251R006 Biological Refuge
IUCN IVBiological refuge
1.98 km² overlap
04251R133 Biological Refuge
IUCN IVBiological refuge
1.84 km² overlap
02251R001 Biological Refuge
IUCN IVBiological refuge
1.66 km² overlap
04251R510 Biological Refuge
IUCN IVBiological refuge
1.45 km² overlap
02251R002 Biological Refuge
IUCN IVBiological refuge
1.44 km² overlap
5 more protected areassorted by overlap area
04251R504 Biological Refuge
IUCN IVBiological refuge
1.16 km² overlap
02251R004 Biological Refuge
IUCN IVBiological refuge
1.04 km² overlap
04251R218 Biological Refuge
IUCN IVBiological refuge
0.73 km² overlap
04251R503 Biological Refuge
IUCN IVBiological refuge
0.57 km² overlap
04251R118 Biological Refuge
IUCN IVBiological refuge
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
101 distinct species · 438 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 Rivière Trenche : 21 espèces reliées par 63 interactions GloBI sur 4 types (connectance 12.7%, filtre Serrano α=0.2). 11 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°
2,1°C
Annual rain
970mm
Moisture idx (CMI)
0,25
Runoff
516mm/an
PET
732mm
AET
605mm
Mean slope
5,4°
Water table
108cm
Forest
99%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)