HydroBASINS lev08 watershed · #7080443780
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 3 administrative regions : Custer, Pennington, Shannon
Sub-basin area
370,1km²
Upstream area
27 937,6km²
Discharge
28,86m³/s
Mean elev.
851m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Battle Creek779 km²
- Bassin de Cheyenne River316 km²
3 dept-equivalent regions (GADM L2)
- Pennington186.1 km²50.2% of basin
- Shannon129.4 km²34.9% of basin
- Custer55.4 km²14.9% of basin
2 intersecting protected areas
Badlands
IUCN IINational Park
14.32 km² overlap
National Park
11.45 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
378 distinct species · 2 960 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 : 35 espèces reliées par 127 interactions GloBI sur 5 types (connectance 11.3%, filtre Serrano α=0.2). 13 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
411mm
Moisture idx (CMI)
-0,63
Runoff
52mm/an
PET
1 107mm
AET
356mm
Mean slope
2,8°
Water table
338cm
Forest
1%
Crops
12%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)