Ontologia

HydroBASINS lev08 watershed · #7080390820

Bassin de Sweet Grass Creek

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 : Park, Stillwater, Sweet Grass

Pfafstetter: 74298654

Sub-basin area

935,8km²

Upstream area

935,8km²

Discharge

3,84m³/s

Mean elev.

1 628m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Yellowstone River508 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Us-Mt-158-1

    IUCN Not Assigned

    Conservation Easement

    40.57 km² overlap

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

Species present

800 distinct species · 9 829 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 829 obs · 20 cellules
Obs. / cellule
≥ 3 913
3 313–3 912
117–3 312
18–116
< 18

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

Ecological tissue

Sample of 33 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 Sweet Grass Creek : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 83 interactions GloBI sur 5 types (connectance 15.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
83
Connectance
0.157
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°

5,2°C

Annual rain

461mm

Moisture idx (CMI)

-0,48

Runoff

146mm/an

PET

918mm

AET

393mm

Mean slope

5,7°

Water table

518cm

Forest

22%

Crops

10%

Urban

0%

Protected

0%

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