HydroBASINS lev08 watershed · #7080707080
Bassin de Corney Bayou
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 : Union
Sub-basin area
364,5km²
Upstream area
2 021,9km²
Discharge
30,11m³/s
Mean elev.
55m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Lowery Creek500 km²
- Bassin de Little Corney Bayou446 km²
2 dept-equivalent regions (GADM L2)
- Union360.7 km²99.0% of basin
- UnionArkansas · United States3.6 km²1.0% of basin
3 intersecting protected areas
Corney Bayou
IUCN VState Wild or Scenic River
3.08 km² overlap
Old Lake D'arbonne
IUCN IIIState Park
0.11 km² overlap
New Lake D'arbonne
IUCN IIIState Park
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
487 distinct species · 4 520 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 Corney Bayou : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 110 interactions GloBI sur 4 types (connectance 12.2%, filtre Serrano α=0.2). 12 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°
17,4°C
Annual rain
1 329mm
Moisture idx (CMI)
-0,06
Runoff
503mm/an
PET
1 410mm
AET
1 044mm
Mean slope
1,4°
Water table
69cm
Forest
98%
Crops
6%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)