HydroBASINS lev08 watershed · #7080332670
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 : McKenzie, Richland, Roosevelt, Williams
Sub-basin area
1 893,6km²
Upstream area
239 332,6km²
Discharge
361,47m³/s
Mean elev.
651m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Missouri River1357 km²
- Bassin de Big Muddy Creek639 km²
4 dept-equivalent regions (GADM L2)
- 842.9 km²44.4% of basin
- Richland817.9 km²43.1% of basin
- 197.6 km²10.4% of basin
- 40.8 km²2.1% of basin
4 intersecting protected areas
Reserve Program
1.84 km² overlap
Ochs
IUCN VState Wildlife Management Area
1.69 km² overlap
Roosevelt County
IUCN VIWaterfowl Production Area
0.52 km² overlap
Fort Union Trading Post
IUCN VINational Historic Site
0.49 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
668 distinct species · 13 380 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 : 27 espèces reliées par 109 interactions GloBI sur 4 types (connectance 15.5%, 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
357mm
Moisture idx (CMI)
-0,63
Runoff
27mm/an
PET
962mm
AET
313mm
Mean slope
2,4°
Water table
349cm
Forest
0%
Crops
47%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)