HydroBASINS lev08 watershed · #7080458550
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 : Brule, Charles Mix, Gregory, Lyman
Sub-basin area
1 169,1km²
Upstream area
660 749,6km²
Discharge
1 017,79m³/s
Mean elev.
514m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Missouri River874 km²
- Bassin de Missouri River4 km²
4 dept-equivalent regions (GADM L2)
- 421.9 km²36.0% of basin
- 278.1 km²23.7% of basin
- 245.8 km²21.0% of basin
- 225.6 km²19.3% of basin
15 intersecting protected areas
State Wildlife Management Area
19.58 km² overlap
State Wildlife Management Area
5.53 km² overlap
State Wildlife Management Area
3.56 km² overlap
State Wildlife Management Area
3.27 km² overlap
Snake Creek State
IUCN VRecreation Area
2.85 km² overlap
Hoover
IUCN VState Wildlife Management Area
2.65 km² overlap
Brule County
IUCN VWaterfowl Production Area
1.64 km² overlap
State Wildlife Management Area
1.39 km² overlap
Charles Mix County
IUCN VWaterfowl Production Area
0.78 km² overlap
6 more protected areassorted by overlap area
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
392 distinct species · 1 859 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 : 37 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 96 interactions GloBI sur 5 types (connectance 8.2%, 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°
8,6°C
Annual rain
559mm
Moisture idx (CMI)
-0,49
Runoff
89mm/an
PET
1 090mm
AET
479mm
Mean slope
3,1°
Water table
295cm
Forest
3%
Crops
61%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)