HydroBASINS lev08 watershed · #7080387740
Bassin de Big Hole 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 4 administrative regions : Beaverhead, Deer Lodge, Granite, Ravalli
Sub-basin area
850,1km²
Upstream area
3 779,5km²
Discharge
7,27m³/s
Mean elev.
2 153m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Big Hole River1160 km²
- Bassin de North Fork Big Hole River884 km²
4 dept-equivalent regions (GADM L2)
- 538.7 km²63.2% of basin
- 311.8 km²36.6% of basin
- 1.5 km²0.2% of basin
- 0.1 km²0.0% of basin
5 intersecting protected areas
Anaconda Pintler
IUCN IbWilderness
249.80 km² overlap
West Pioneer
IUCN IbWilderness Study Area
59.36 km² overlap
Toussaint Ranch
IUCN VEasement
0.80 km² overlap
Goat Flat
IUCN IaResearch Natural Area
0.55 km² overlap
Big Hole River
IUCN VEasement
0.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
845 distinct species · 3 855 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Big Hole River : 23 espèces reliées par 126 interactions GloBI sur 5 types (connectance 15.4%, filtre Serrano α=0.2). 18 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°
1,4°C
Annual rain
404mm
Moisture idx (CMI)
-0,49
Runoff
107mm/an
PET
815mm
AET
353mm
Mean slope
10,9°
Water table
820cm
Forest
74%
Crops
3%
Urban
0%
Protected
29%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)