HydroBASINS lev08 watershed · #7080385940
Bassin de Rivière L'Assomption
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 3 administrative regions : D'Autray, Joliette, Matawinie
Sub-basin area
166,3km²
Upstream area
1 344,6km²
Discharge
24,18m³/s
Mean elev.
117m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rivière L'Assomption758 km²
- Bassin de Rivière Noire420 km²
3 dept-equivalent regions (GADM L2)
- 112.6 km²67.6% of basin
- 52.9 km²31.7% of basin
- 1.2 km²0.7% of basin
1 intersecting protected areas
Bois de Saint-Jean-de-Matha (partie Bilodeau-Dumas) Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
741 distinct species · 29 139 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 L'Assomption : 21 espèces reliées par 119 interactions GloBI sur 4 types (connectance 18.9%, filtre Serrano α=0.2). 15 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°
4,8°C
Annual rain
1 001mm
Moisture idx (CMI)
0,18
Runoff
593mm/an
PET
819mm
AET
646mm
Mean slope
2,8°
Water table
138cm
Forest
25%
Crops
27%
Urban
14%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)