HydroBASINS lev08 watershed · #7080454960
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 : Fall River, Niobrara, Weston
Sub-basin area
756km²
Upstream area
13 878,3km²
Discharge
20,61m³/s
Mean elev.
1 190m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Cheyenne River597 km²
- Bassin de Cheyenne River89 km²
3 dept-equivalent regions (GADM L2)
- 482.5 km²63.7% of basin
- 244.9 km²32.3% of basin
- 30.0 km²4.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
300 distinct species · 2 780 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 81 interactions GloBI sur 4 types (connectance 16.3%, filtre Serrano α=0.2). 11 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°
8,1°C
Annual rain
362mm
Moisture idx (CMI)
-0,68
Runoff
53mm/an
PET
1 127mm
AET
313mm
Mean slope
1,9°
Water table
439cm
Forest
0%
Crops
9%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)