HydroBASINS lev08 watershed · #7080452370
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 4 administrative regions : Campbell, Converse, Niobrara, Weston
Sub-basin area
599,7km²
Upstream area
4 541,1km²
Discharge
6,46m³/s
Mean elev.
1 344m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Dry Fork Cheyenne River1285 km²
- Bassin de Antelope Creek876 km²
4 dept-equivalent regions (GADM L2)
- 250.8 km²41.7% of basin
- 217.7 km²36.2% of basin
- 125.6 km²20.9% of basin
- Campbell6.7 km²1.1% of basin
2 intersecting protected areas
Easement
16.95 km² overlap
Private Conservation Land
7.64 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
264 distinct species · 3 258 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 dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 105 interactions GloBI sur 5 types (connectance 19.9%, filtre Serrano α=0.2). 12 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°
7,7°C
Annual rain
329mm
Moisture idx (CMI)
-0,70
Runoff
37mm/an
PET
1 112mm
AET
286mm
Mean slope
2,1°
Water table
501cm
Forest
0%
Crops
6%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)