HydroBASINS lev08 watershed · #7080326890
Bassin de Flathead 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 1 administrative regions : Flathead
Sub-basin area
325,1km²
Upstream area
11 748,8km²
Discharge
215,18m³/s
Mean elev.
1 073m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de South Fork Flathead River1395 km²
- Bassin de Flathead River137 km²
1 dept-equivalent regions (GADM L2)
- 326.1 km²100.0% of basin
1 intersecting protected areas
Flathead, Montana
IUCN VWild and Scenic River
1.68 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 120 distinct species · 108 877 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Flathead River : 16 espèces reliées par 65 interactions GloBI sur 3 types (connectance 18.5%, filtre Serrano α=0.2). 11 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°
5,2°C
Annual rain
596mm
Moisture idx (CMI)
-0,31
Runoff
533mm/an
PET
878mm
AET
493mm
Mean slope
7,1°
Water table
201cm
Forest
74%
Crops
20%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)