Ontologia

HydroBASINS lev08 watershed · #7080409840

Bassin de Little Bighorn 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 : Big Horn, Sheridan

Pfafstetter: 74298748

Sub-basin area

342,3km²

Upstream area

342,3km²

Discharge

0,93m³/s

Mean elev.

1 514m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Little Bighorn River171 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Pass Creeks

    IUCN V

    Easement

    33.51 km² overlap

  • Kerns

    IUCN V

    Wildlife Habitat Management Area

    10.67 km² overlap

  • Pass Creeks Fee

    IUCN V

    Private Conservation Land

    0.01 km² overlap

  • Pass Creeks Fee

    IUCN V

    Private Conservation Land

    0.01 km² overlap

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

Species present

257 distinct species · 895 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

895 obs · 10 cellules
Obs. / cellule
≥ 198
198–197
103–197
91–102
< 91

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

Ecological tissue

Sample of 36 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 Bighorn River : 20 espèces reliées par 108 interactions GloBI sur 4 types (connectance 17.1%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
108
Connectance
0.171
Patrimoniales
0
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°

5,5°C

Annual rain

426mm

Moisture idx (CMI)

-0,56

Runoff

90mm/an

PET

989mm

AET

368mm

Mean slope

7,5°

Water table

616cm

Forest

25%

Crops

25%

Urban

0%

Protected

3%

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