HydroBASINS lev08 watershed · #7080471830
Bassin de Niobrara 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 : Cherry, Sheridan
Sub-basin area
710,2km²
Upstream area
11 535,1km²
Discharge
3,46m³/s
Mean elev.
1 111m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Niobrara River680 km²
- Bassin de Niobrara River221 km²
2 dept-equivalent regions (GADM L2)
- Sheridan570.5 km²80.2% of basin
- 140.8 km²19.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
246 distinct species · 993 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Niobrara River : 29 espèces reliées par 122 interactions GloBI sur 4 types (connectance 14.2%, 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°
7,7°C
Annual rain
453mm
Moisture idx (CMI)
-0,59
Runoff
27mm/an
PET
1 092mm
AET
391mm
Mean slope
1,3°
Water table
416cm
Forest
0%
Crops
18%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)