HydroBASINS lev08 watershed · #7080467580
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 : Boyd, Charles Mix, Gregory
Sub-basin area
358km²
Upstream area
665 341,5km²
Discharge
1 030,73m³/s
Mean elev.
475m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Andes Creek653 km²
- Bassin de Missouri River303 km²
3 dept-equivalent regions (GADM L2)
- Boyd145.4 km²40.6% of basin
- 127.0 km²35.4% of basin
- 86.2 km²24.0% of basin
7 intersecting protected areas
Karl E. Mundt
IUCN IVNational Wildlife Refuge
5.65 km² overlap
North Point
IUCN VRecreation Area
3.16 km² overlap
State Wildlife Management Area
2.42 km² overlap
Gregory County
IUCN VWaterfowl Production Area
1.27 km² overlap
Randall Creek
IUCN VRecreation Area
0.74 km² overlap
South Shore
IUCN VRecreation Area
0.73 km² overlap
Sunshine Bottoms
IUCN VWildlife Management Area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
705 distinct species · 25 309 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 : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 92 interactions GloBI sur 4 types (connectance 11.8%, filtre Serrano α=0.2). 9 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°
9,1°C
Annual rain
586mm
Moisture idx (CMI)
-0,46
Runoff
119mm/an
PET
1 079mm
AET
501mm
Mean slope
3,3°
Water table
302cm
Forest
13%
Crops
51%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)