HydroBASINS lev08 watershed · #7080543770
Bassin de 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 3 administrative regions : Gage, Marshall, Pawnee
Sub-basin area
552,8km²
Upstream area
11 836,4km²
Discharge
57,72m³/s
Mean elev.
409m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Wolf Creek233 km²
- Bassin de Big Blue River58 km²
3 dept-equivalent regions (GADM L2)
- Marshall240.8 km²43.5% of basin
- Pawnee174.7 km²31.6% of basin
- 137.9 km²24.9% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
385 distinct species · 2 554 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Big Blue River : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 110 interactions GloBI sur 4 types (connectance 13.4%, 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°
11,1°C
Annual rain
812mm
Moisture idx (CMI)
-0,29
Runoff
175mm/an
PET
1 139mm
AET
689mm
Mean slope
1,2°
Water table
129cm
Forest
0%
Crops
76%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)