HydroBASINS lev08 watershed · #7080336970
Bassin de Rivière Pierriche Nord-Ouest
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
1 085km²
Upstream area
1 085,2km²
Discharge
17,48m³/s
Mean elev.
471m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 633.1 km²58.2% of basin
- 455.2 km²41.8% of basin
9 intersecting protected areas
Proposed biodiversity reserve
278.66 km² overlap
04251R054 Biological Refuge
IUCN IVBiological refuge
2.64 km² overlap
04251R992 Biological Refuge
IUCN IVBiological refuge
2.42 km² overlap
04251R993 Biological Refuge
IUCN IVBiological refuge
1.65 km² overlap
04251R179 Biological Refuge
IUCN IVBiological refuge
1.58 km² overlap
04251R188 Biological Refuge
IUCN IVBiological refuge
1.53 km² overlap
04251R180 Biological Refuge
IUCN IVBiological refuge
1.19 km² overlap
04251R055 Biological Refuge
IUCN IVBiological refuge
1.09 km² overlap
04251R023 Biological Refuge
IUCN IVBiological refuge
0.98 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
89 distinct species · 195 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Pierriche Nord-Ouest : 13 espèces reliées par 46 interactions GloBI sur 4 types (connectance 16.7%, 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°
1,3°C
Annual rain
989mm
Moisture idx (CMI)
0,28
Runoff
508mm/an
PET
708mm
AET
597mm
Mean slope
5,2°
Water table
103cm
Forest
89%
Crops
0%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)