HydroBASINS lev08 watershed · #7080571860
Bassin de Big Sandy 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 1 administrative regions : Cheyenne
Sub-basin area
29,1km²
Upstream area
2 960km²
Discharge
0,53m³/s
Mean elev.
1 293m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Big Sandy Creek2450 km²
- Bassin de Wild Horse Creek481 km²
1 dept-equivalent regions (GADM L2)
- Cheyenne29.1 km²100.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
348 distinct species · 7 535 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Big Sandy Creek : 23 espèces reliées par 123 interactions GloBI sur 4 types (connectance 18.5%, filtre Serrano α=0.2). 14 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°
10,0°C
Annual rain
365mm
Moisture idx (CMI)
-0,71
Runoff
4mm/an
PET
1 274mm
AET
313mm
Mean slope
0,4°
Water table
174cm
Forest
0%
Crops
18%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)