HydroBASINS lev08 watershed · #7080341730

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 : Blaine, Fergus, Phillips

Pfafstetter: 74299730

Sub-basin area

663,8km²

Upstream area

104 357,6km²

Discharge

288,08m³/s

Mean elev.

878m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Missouri River2214 km²

▲ Receives from 2 basins

Bassin de Missouri River2689 km²
Bassin de Cow Creek1476 km²

3 dept-equivalent regions (GADM L2)

Fergus
Montana · United States
496.6 km²
74.6% of basin
Phillips
Montana · United States
154.2 km²
23.2% of basin
Blaine
Montana · United States
15.0 km²
2.3% of basin

11 intersecting protected areas

Upper Missouri River Breaks
IUCN V
National Monument
378.61 km² overlap
Upper Missouri
IUCN V
National Wild & Scenic River
80.87 km² overlap
Antelope Creek
IUCN Ib
Wilderness Study Area
52.25 km² overlap
Charles M. Russell
IUCN IV
National Wildlife Refuge
48.66 km² overlap
Woodhawk
IUCN Ib
Wilderness Study Area
30.24 km² overlap
Charles M. Russell National Wildlife Refuge_
IUCN Ib
National Wildlife Refuge
20.07 km² overlap
Charles M. Russell National Wildlife Refuge_Wilderness Study Area
IUCN Ib
National Wildlife Refuge
6.13 km² overlap
Montana
IUCN VI
State Trust Lands
1.94 km² overlap
American Prairie Foundation
IUCN V
Private Conservation
0.90 km² overlap

2 more protected areassorted by overlap area

Cow Creek
IUCN Ib
Wilderness Study Area
0.52 km² overlap
Cow Creek
IUCN Ib
Wilderness Study Area
0.42 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

308 distinct species · 3 250 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 37 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Missouri River : 27 espèces reliées par 82 interactions GloBI sur 4 types (connectance 12.3%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.123

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

6,5°C

Annual rain

365mm

Moisture idx (CMI)

-0,64

Runoff

13mm/an

PET

1 012mm

AET

318mm

Mean slope

4,9°

Water table

604cm

Forest

Crops

Urban

Protected

21%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)