HydroBASINS lev08 watershed · #7080332660
Bassin de Big Dry 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 : Garfield, McCone, Valley
Sub-basin area
1 702,9km²
Upstream area
9 901,2km²
Discharge
11,01m³/s
Mean elev.
745m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Timber Creek866 km²
- Bassin de Big Dry Creek740 km²
3 dept-equivalent regions (GADM L2)
- 1067.2 km²62.5% of basin
- 639.0 km²37.4% of basin
- Valley1.6 km²0.1% of basin
2 intersecting protected areas
Charles M. Russell
IUCN IVNational Wildlife Refuge
101.78 km² overlap
Montana
IUCN VIState Trust Lands
4.70 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
358 distinct species · 1 847 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Dry Creek : 18 espèces reliées par 113 interactions GloBI sur 4 types (connectance 21.4%, filtre Serrano α=0.2). 15 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°
6,5°C
Annual rain
311mm
Moisture idx (CMI)
-0,69
Runoff
48mm/an
PET
997mm
AET
275mm
Mean slope
2,3°
Water table
328cm
Forest
1%
Crops
15%
Urban
0%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)