HydroBASINS lev08 watershed · #7080434100
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 : Meade, Pennington
Sub-basin area
734,8km²
Upstream area
33 151,6km²
Discharge
22,59m³/s
Mean elev.
812m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Boxelder Creek993 km²
- Bassin de Cheyenne River568 km²
2 dept-equivalent regions (GADM L2)
- Pennington689.5 km²93.6% of basin
- Meade46.8 km²6.4% of basin
3 intersecting protected areas
Badlands
IUCN IINational Park
3.52 km² overlap
Conservation Easement
0.48 km² overlap
New Wall Dam
IUCN VState Wildlife Management Area
0.27 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
628 distinct species · 18 049 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 : 29 espèces reliées par 82 interactions GloBI sur 5 types (connectance 13.8%, filtre Serrano α=0.2). 6 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°
8,4°C
Annual rain
417mm
Moisture idx (CMI)
-0,62
Runoff
61mm/an
PET
1 087mm
AET
360mm
Mean slope
2,8°
Water table
497cm
Forest
28%
Crops
28%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)