HydroBASINS lev08 watershed · #7080337660
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 4 administrative regions : Blaine, Chouteau, Fergus, Hill
Sub-basin area
2 689,2km²
Upstream area
102 217,6km²
Discharge
288,19m³/s
Mean elev.
1 032m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Missouri River362 km²
- Bassin de Judith River158 km²
4 dept-equivalent regions (GADM L2)
- 1102.6 km²40.9% of basin
- Blaine1073.4 km²39.8% of basin
- 494.6 km²18.3% of basin
- 26.4 km²1.0% of basin
8 intersecting protected areas
National Monument
603.29 km² overlap
Upper Missouri
IUCN VNational Wild & Scenic River
238.44 km² overlap
Ervin Ridge
IUCN IbWilderness Study Area
41.93 km² overlap
Dog Creek South
IUCN IbWilderness Study Area
20.80 km² overlap
Stafford
IUCN IbWilderness Study Area
19.92 km² overlap
Woodhawk
IUCN IbWilderness Study Area
2.25 km² overlap
Cow Creek
IUCN IbWilderness Study Area
1.53 km² overlap
Chouteau County
IUCN VWaterfowl Production Area
1.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
478 distinct species · 5 911 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 : 21 espèces reliées par 96 interactions GloBI sur 4 types (connectance 18.2%, filtre Serrano α=0.2). 12 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°
5,8°C
Annual rain
394mm
Moisture idx (CMI)
-0,59
Runoff
34mm/an
PET
966mm
AET
343mm
Mean slope
4,9°
Water table
600cm
Forest
19%
Crops
16%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)