HydroBASINS lev08 watershed · #7080333810
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 1 administrative regions : Chouteau
Sub-basin area
324,8km²
Upstream area
63 232,9km²
Discharge
247,46m³/s
Mean elev.
918m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 3 basins
- Bassin de Shonkin Creek492 km²
- Bassin de Missouri River475 km²
- Bassin · #708008750026 km²
1 dept-equivalent regions (GADM L2)
- 325.7 km²100.0% of basin
2 intersecting protected areas
National Monument
17.90 km² overlap
Upper Missouri
IUCN VNational Wild & Scenic River
6.69 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
298 distinct species · 3 037 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 : 25 espèces reliées par 119 interactions GloBI sur 4 types (connectance 16.9%, 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°
6,9°C
Annual rain
390mm
Moisture idx (CMI)
-0,61
Runoff
128mm/an
PET
1 014mm
AET
339mm
Mean slope
2,2°
Water table
518cm
Forest
13%
Crops
50%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)