HydroBASINS lev08 watershed · #7080520930
Bassin de West Fork Big Blue 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 : Fillmore, Hamilton, Seward, York
Sub-basin area
524,2km²
Upstream area
1 938,8km²
Discharge
7,9m³/s
Mean elev.
498m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de School Creek446 km²
- Bassin de West Fork Big Blue River293 km²
4 dept-equivalent regions (GADM L2)
- York375.0 km²71.5% of basin
- Fillmore126.7 km²24.1% of basin
- Hamilton14.1 km²2.7% of basin
- Seward8.9 km²1.7% of basin
9 intersecting protected areas
Kirkpatrick Basin
IUCN VWildlife Management Area
1.68 km² overlap
Marsh Hawk
IUCN VWildlife Management Area
0.69 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Fillmore, NE
IUCN VConservation Easement
0.40 km² overlap
Bluebill
IUCN VWildlife Management Area
0.32 km² overlap
Reserve Program
0.26 km² overlap
Reserve Program
0.24 km² overlap
York County
IUCN VWaterfowl Production Area
0.21 km² overlap
Hidden Marsh
IUCN VWildlife Management Area
0.19 km² overlap
Reserve Program
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
311 distinct species · 4 080 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 West Fork Big Blue River : 28 espèces reliées par 73 interactions GloBI sur 4 types (connectance 12.3%, filtre Serrano α=0.2). 7 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°
10,4°C
Annual rain
700mm
Moisture idx (CMI)
-0,37
Runoff
145mm/an
PET
1 108mm
AET
596mm
Mean slope
0,5°
Water table
72cm
Forest
22%
Crops
89%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)