Ontologia

HydroBASINS lev08 watershed · #7080401070

Bassin de West Fork Stillwater 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 2 administrative regions : Stillwater, Sweet Grass

Pfafstetter: 74298644

Sub-basin area

321,7km²

Upstream area

321,7km²

Discharge

2,9m³/s

Mean elev.

2 390m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Stillwater River503 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

270 distinct species · 984 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

984 obs · 10 cellules
Obs. / cellule
≥ 336
336–335
143–335
61–142
< 61

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 West Fork Stillwater River : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 133 interactions GloBI sur 5 types (connectance 14.7%, filtre Serrano α=0.2). 18 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
133
Connectance
0.147
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°

1,1°C

Annual rain

678mm

Moisture idx (CMI)

-0,09

Runoff

284mm/an

PET

768mm

AET

525mm

Mean slope

16,5°

Water table

696cm

Forest

92%

Crops

6%

Urban

0%

Protected

36%

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