HydroBASINS lev08 watershed · #7080478630
Bassin de Elkhorn 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 : Holt, Rock
Sub-basin area
1 611,2km²
Upstream area
1 611,3km²
Discharge
6,09m³/s
Mean elev.
694m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Rock929.8 km²57.6% of basin
- Holt684.0 km²42.4% of basin
2 intersecting protected areas
Reserve Program
1.45 km² overlap
Nebraska Land Trust #25
IUCN Not AssignedConservation Easement
0.64 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
698 distinct species · 11 516 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Elkhorn River : 28 espèces reliées par 73 interactions GloBI sur 4 types (connectance 11.0%, filtre Serrano α=0.2). 9 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°
8,8°C
Annual rain
593mm
Moisture idx (CMI)
-0,45
Runoff
125mm/an
PET
1 074mm
AET
507mm
Mean slope
0,4°
Water table
51cm
Forest
0%
Crops
39%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)