HydroBASINS lev08 watershed · #7080320490
Bassin de Namakan Narrows
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 across 2 countries : Rainy River, Saint Louis
Sub-basin area
155,7km²
Upstream area
16 629,1km²
Discharge
150,21m³/s
Mean elev.
358m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Vermilion River2691 km²
- Bassin de Little Indian Sioux River876 km²
2 dept-equivalent regions (GADM L2)
- 87.0 km²55.7% of basin
- 69.2 km²44.3% of basin
1 intersecting protected areas
Voyageurs
IUCN IINational Park
54.92 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
794 distinct species · 3 488 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Namakan Narrows : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 61 interactions GloBI sur 4 types (connectance 7.8%, filtre Serrano α=0.2). 10 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°
2,5°C
Annual rain
696mm
Moisture idx (CMI)
-0,13
Runoff
270mm/an
PET
797mm
AET
587mm
Mean slope
2,6°
Water table
60cm
Forest
68%
Crops
0%
Urban
0%
Protected
39%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)