HydroBASINS lev08 watershed · #7080347410
Bassin de Saint Louis River
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 : Lake, Saint Louis
Sub-basin area
1 012,8km²
Upstream area
1 012,8km²
Discharge
15,07m³/s
Mean elev.
475m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 900.3 km²88.6% of basin
- Lake115.4 km²11.4% of basin
6 intersecting protected areas
Lake
12.89 km² overlap
Natural Area
9.09 km² overlap
Sand Lake Peatland
IUCN VLake
0.16 km² overlap
Sand Lake Peatland
IUCN VLake
0.13 km² overlap
Lake
0.01 km² overlap
Aquatic Management Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 416 distinct species · 7 586 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Saint Louis River : 32 espèces reliées par 88 interactions GloBI sur 4 types (connectance 8.9%, filtre Serrano α=0.2). 13 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°
3,1°C
Annual rain
727mm
Moisture idx (CMI)
-0,06
Runoff
521mm/an
PET
776mm
AET
606mm
Mean slope
1,0°
Water table
20cm
Forest
80%
Crops
1%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)