HydroBASINS lev08 watershed · #7080344480
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 3 administrative regions : Dunn, McLean, Mercer
Sub-basin area
360,4km²
Upstream area
459 457,6km²
Discharge
797,49m³/s
Mean elev.
597m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Little Missouri River1448 km²
- Bassin de Missouri River983 km²
3 dept-equivalent regions (GADM L2)
- Mercer164.5 km²45.5% of basin
- McLean142.4 km²39.4% of basin
- 54.6 km²15.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
216 distinct species · 1 282 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 120 interactions GloBI sur 4 types (connectance 15.4%, 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°
5,2°C
Annual rain
425mm
Moisture idx (CMI)
-0,54
Runoff
56mm/an
PET
922mm
AET
371mm
Mean slope
1,9°
Water table
142cm
Forest
13%
Crops
38%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)