HydroBASINS lev08 watershed · #8080165870
Bassin de Sahtúdé
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 1 administrative regions : Fort Smith
Sub-basin area
2 229,3km²
Upstream area
125 135,7km²
Discharge
497,88m³/s
Mean elev.
198m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sahtúdé706 km²
- Bassin de Sahtúdé106 km²
1 dept-equivalent regions (GADM L2)
- Fort Smith2244.2 km²100.0% of basin
2 intersecting protected areas
National Historic Site
510.25 km² overlap
Sentinel Islands
IUCN Not ApplicableConservation zone in regional land use plan
0.27 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
41 distinct species · 48 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 4 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 Sahtúdé : 4 espèces reliées par 2 interactions GloBI sur 1 type (connectance 33.3%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
-7,3°C
Annual rain
256mm
Moisture idx (CMI)
-0,37
Runoff
160mm/an
PET
406mm
AET
236mm
Mean slope
0,9°
Water table
11cm
Forest
19%
Crops
0%
Urban
0%
Protected
23%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)