HydroBASINS lev08 watershed · #7080424530
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 : Haakon, Meade, Pennington, Ziebach
Sub-basin area
2 488,6km²
Upstream area
56 121,3km²
Discharge
44,56m³/s
Mean elev.
721m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Belle Fourche River1132 km²
- Bassin de Cheyenne River189 km²
4 dept-equivalent regions (GADM L2)
- 814.3 km²32.7% of basin
- Pennington654.0 km²26.2% of basin
- Meade652.5 km²26.2% of basin
- 373.1 km²15.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
362 distinct species · 3 496 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 : 14 espèces reliées par 105 interactions GloBI sur 4 types (connectance 29.9%, 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°
8,1°C
Annual rain
414mm
Moisture idx (CMI)
-0,61
Runoff
67mm/an
PET
1 075mm
AET
358mm
Mean slope
2,7°
Water table
389cm
Forest
25%
Crops
32%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)