HydroBASINS lev08 watershed · #7080322650
Bassin de Rivière à Mars
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 : Charlevoix, Le Fjord-du-Saguenay
Sub-basin area
1 421,9km²
Upstream area
1 422km²
Discharge
31,69m³/s
Mean elev.
473m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 999.3 km²70.1% of basin
- 426.8 km²29.9% of basin
11 intersecting protected areas
Saguenay Fjord Upstream Closure
IUCN Not ApplicableOther Effective Area-Based Conservation Measure
35.65 km² overlap
02352R011 Biological Refuge
IUCN IVBiological refuge
4.58 km² overlap
02352R029 Biological Refuge
IUCN IVBiological refuge
3.60 km² overlap
02352R025 Biological Refuge
IUCN IVBiological refuge
3.08 km² overlap
02352R031 Biological Refuge
IUCN IVBiological refuge
2.03 km² overlap
02352R030 Biological Refuge
IUCN IVBiological refuge
1.79 km² overlap
02352R010 Biological Refuge
IUCN IVBiological refuge
1.15 km² overlap
03351R049 Biological Refuge
IUCN IVBiological refuge
0.89 km² overlap
Water fowl gathering area
0.79 km² overlap
2 more protected areassorted by overlap area
03351R051 Biological Refuge
IUCN IVBiological refuge
0.20 km² overlap
03351R011 Biological Refuge
IUCN IVBiological refuge
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 329 distinct species · 323 966 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 à Mars : 13 espèces reliées par 77 interactions GloBI sur 3 types (connectance 19.0%, filtre Serrano α=0.2). 16 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°
1,4°C
Annual rain
1 101mm
Moisture idx (CMI)
0,38
Runoff
708mm/an
PET
671mm
AET
604mm
Mean slope
6,3°
Water table
134cm
Forest
86%
Crops
1%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)