HydroBASINS lev08 watershed · #7080393380
Bassin de Rivière Mascouche
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 9 administrative regions : Communauté-Urbaine-de-Montréal, Deux-Montagnes, L'Assomption, La Rivière-du-Nord, Laval +4
Sub-basin area
1 367,5km²
Upstream area
1 367,7km²
Discharge
25,06m³/s
Mean elev.
43m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- 264.5 km²19.3% of basin
- 259.9 km²19.0% of basin
- 216.4 km²15.8% of basin
- 198.0 km²14.4% of basin
- 180.3 km²13.2% of basin
- 132.4 km²9.7% of basin
- 18.9 km²1.4% of basin
- 17.6 km²1.3% of basin
1 moreFull L2 list
- La Rivière-du-Nord0.4 km² · 0.0%
30 intersecting protected areas
Proposed man-made landscape
10.22 km² overlap
Water fowl gathering area
7.04 km² overlap
Water fowl gathering area
6.75 km² overlap
Bois-de-l'île-Bizard Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
2.91 km² overlap
Pointe-aux-Prairies Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
2.12 km² overlap
Natural Area Under Private Stewardship
1.58 km² overlap
Anse-à-l'Orme Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
1.37 km² overlap
Cap-Saint-Jacques Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
1.25 km² overlap
Bois-de-Saraguay Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
0.93 km² overlap
21 more protected areassorted by overlap area
Archipel-du-Mitan Nature Reserve
IUCN Not ReportedRecognized nature reserve
0.68 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.53 km² overlap
bois de la Source Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
0.43 km² overlap
Natural Area Under Private Stewardship
0.42 km² overlap
Muskrat habitat
0.40 km² overlap
Bois-d'Anjou Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
0.40 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.31 km² overlap
Muskrat habitat
0.28 km² overlap
Wildlife preserve
0.21 km² overlap
Île-Garth Ecological Reserve
IUCN IaEcological reserve
0.17 km² overlap
Île-Bonfoin Nature Reserve
IUCN IVRecognized nature reserve
0.13 km² overlap
Forêt-du-Grand-Coteau Nature Reserve
IUCN Not ReportedRecognized nature reserve
0.12 km² overlap
Boisé-Roger-Lemoine Nature Reserve
IUCN Not ReportedRecognized nature reserve
0.08 km² overlap
Muskrat habitat
0.07 km² overlap
Haut-Bois Natural reserve
IUCN Not ReportedRecognized nature reserve
0.07 km² overlap
Recognized nature reserve
0.07 km² overlap
Natural Area Under Private Stewardship
0.07 km² overlap
Natural Area Under Private Stewardship
0.06 km² overlap
Recognized nature reserve
0.06 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.06 km² overlap
Wildlife preserve
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 783 distinct species · 3 692 441 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 Mascouche : 21 espèces reliées par 79 interactions GloBI sur 4 types (connectance 15.0%, filtre Serrano α=0.2). 12 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°
5,9°C
Annual rain
960mm
Moisture idx (CMI)
0,13
Runoff
577mm/an
PET
831mm
AET
643mm
Mean slope
0,7°
Water table
28cm
Forest
18%
Crops
22%
Urban
49%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)