HydroBASINS lev08 watershed · #7080376290
Bassin de East Fork Armells 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 : Big Horn, Rosebud, Treasure
Sub-basin area
1 314,2km²
Upstream area
103 158,9km²
Discharge
379,54m³/s
Mean elev.
958m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Big Porcupine Creek2252 km²
- Bassin de Yellowstone River563 km²
3 dept-equivalent regions (GADM L2)
- 1266.8 km²96.2% of basin
- 42.2 km²3.2% of basin
- 8.4 km²0.6% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
679 distinct species · 5 873 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de East Fork Armells Creek : 28 espèces reliées par 122 interactions GloBI sur 4 types (connectance 15.6%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
7,0°C
Annual rain
362mm
Moisture idx (CMI)
-0,66
Runoff
36mm/an
PET
1 055mm
AET
314mm
Mean slope
3,4°
Water table
660cm
Forest
0%
Crops
4%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)