HydroBASINS lev08 watershed · #7080448640
Bassin de Cheyenne 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 : Custer, Shannon
Sub-basin area
316,1km²
Upstream area
26 788,4km²
Discharge
32,38m³/s
Mean elev.
898m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Cheyenne River2275 km²
- Bassin de French Creek693 km²
2 dept-equivalent regions (GADM L2)
- Shannon221.1 km²69.8% of basin
- Custer95.6 km²30.2% of basin
1 intersecting protected areas
Badlands
IUCN IINational Park
0.91 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
283 distinct species · 3 810 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 Cheyenne River : 21 espèces reliées par 126 interactions GloBI sur 5 types (connectance 21.2%, 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°
8,6°C
Annual rain
416mm
Moisture idx (CMI)
-0,63
Runoff
51mm/an
PET
1 109mm
AET
359mm
Mean slope
2,9°
Water table
367cm
Forest
0%
Crops
12%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)