Ontologia

HydroBASINS lev08 watershed · #7080340280

Bassin de Little 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 : Billings, Dunn, McKenzie

Pfafstetter: 74297830

Sub-basin area

2 272,3km²

Upstream area

22 028km²

Discharge

14,07m³/s

Mean elev.

722m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Little Missouri River1448 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

6 intersecting protected areas

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

Species present

1 053 distinct species · 35 595 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

35 595 obs · 62 cellules
Obs. / cellule
≥ 16 434
385–16 433
144–384
88–143
< 88

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 43 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

Indicateurs du tissu écologique

Tissu écologique de Bassin de Little Missouri River : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 114 interactions GloBI sur 4 types (connectance 12.1%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
114
Connectance
0.120
Patrimoniales
1
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°

5,8°C

Annual rain

392mm

Moisture idx (CMI)

-0,59

Runoff

43mm/an

PET

957mm

AET

342mm

Mean slope

4,5°

Water table

399cm

Forest

22%

Crops

19%

Urban

0%

Protected

6%

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