HydroBASINS lev08 watershed · #7080327170

Bassin de Milk 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 1 administrative regions : Valley

2% lakePfafstetter: 74299417

Sub-basin area

1 604,4km²

Upstream area

54 274km²

Discharge

25,38m³/s

Mean elev.

732m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Milk River40 km²

▲ Receives from 2 basins

Bassin de Rock Creek3515 km²
Bassin de Milk River2 km²

1 dept-equivalent regions (GADM L2)

Valley
Montana · United States
1609.2 km²
100.0% of basin

8 intersecting protected areas

Bitter Creek
IUCN V
Easement
45.17 km² overlap
Wetlands Reserve Program (WRP), Valley, MT
IUCN V
Reserve Program
12.91 km² overlap
Buffalo Coulee
IUCN Not Assigned
Conservation Easement
11.24 km² overlap
Wetlands
IUCN Not Assigned
Reserve Program
5.64 km² overlap
Valley County
IUCN V
Waterfowl Production Area
4.58 km² overlap
Bitter Creek
IUCN Ib
Wilderness Study Area
4.39 km² overlap
Bitter Creek
IUCN V
Conservation Easement
1.05 km² overlap
Local Government
IUCN V
Local Conservation Area
0.02 km² overlap

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

Species present

616 distinct species · 16 632 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 32 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 Milk River : 21 espèces reliées par 123 interactions GloBI sur 4 types (connectance 24.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

123

Connectance

0.248

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°

5,3°C

Annual rain

292mm

Moisture idx (CMI)

-0,69

Runoff

26mm/an

PET

942mm

AET

260mm

Mean slope

1,5°

Water table

279cm

Forest

Crops

28%

Urban

Protected

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