HydroBASINS lev08 watershed · #7080352210
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 6 administrative regions : McHenry, McLean, Mercer, Oliver, Sheridan +1
Sub-basin area
2 363,2km²
Upstream area
472 027,8km²
Discharge
819,89m³/s
Mean elev.
586m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Knife River1198 km²
- Bassin de Missouri River459 km²
6 dept-equivalent regions (GADM L2)
- McLean1854.4 km²78.2% of basin
- 306.2 km²12.9% of basin
- Sheridan122.2 km²5.2% of basin
- Mercer53.6 km²2.3% of basin
- 30.9 km²1.3% of basin
- McHenry2.7 km²0.1% of basin
18 intersecting protected areas
Mclean County
IUCN VWaterfowl Production Area
72.40 km² overlap
Mclean County
IUCN VIWaterfowl Production Area
26.35 km² overlap
Waterfowl Production Area
21.69 km² overlap
Cross Ranch Fee
IUCN VPrivate Conservation Land
14.03 km² overlap
Lake Nettie
IUCN VNational Wildlife Refuge
12.38 km² overlap
Nature Preserve
8.98 km² overlap
Waterfowl Production Area
5.59 km² overlap
Camp Lake
IUCN Not AssignedNational Wildlife Refuge
2.37 km² overlap
Mclean County
IUCN VWaterfowl Production Area
2.21 km² overlap
9 more protected areassorted by overlap area
Missouri Breaks
IUCN VState Wildlife Management Area
1.94 km² overlap
Ward County
IUCN VIWaterfowl Production Area
1.83 km² overlap
Charles Schroeder
IUCN VState Wildlife Management Area
1.74 km² overlap
Arroda
IUCN VLake
1.54 km² overlap
Lake Otis
IUCN VNational Wildlife Refuge
1.30 km² overlap
Mclean County
IUCN VWaterfowl Production Area
1.30 km² overlap
Lewis And Clark
IUCN VWildlife Management Area
0.49 km² overlap
Blue
IUCN VLake
0.06 km² overlap
Painted Woods
IUCN VState Wildlife Management Area
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
789 distinct species · 16 876 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 76 interactions GloBI sur 4 types (connectance 13.5%, filtre Serrano α=0.2). 7 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°
4,8°C
Annual rain
437mm
Moisture idx (CMI)
-0,52
Runoff
60mm/an
PET
905mm
AET
381mm
Mean slope
1,1°
Water table
107cm
Forest
2%
Crops
58%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)