HydroBASINS lev08 watershed · #7080338760
Bassin de Missouri 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 : Chouteau, Fergus
Sub-basin area
362km²
Upstream area
92 389,4km²
Discharge
282,88m³/s
Mean elev.
907m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Missouri River1957 km²
- Bassin de Arrow Creek1 km²
2 dept-equivalent regions (GADM L2)
- 332.5 km²91.6% of basin
- 30.5 km²8.4% of basin
2 intersecting protected areas
National Monument
64.98 km² overlap
Upper Missouri
IUCN VNational Wild & Scenic River
57.68 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
216 distinct species · 855 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Missouri River : 29 espèces reliées par 77 interactions GloBI sur 4 types (connectance 10.4%, 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°
6,4°C
Annual rain
357mm
Moisture idx (CMI)
-0,65
Runoff
59mm/an
PET
1 011mm
AET
311mm
Mean slope
3,9°
Water table
517cm
Forest
18%
Crops
25%
Urban
0%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)