HydroBASINS lev08 watershed · #7080711410
Bassin de Ouachita 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 : Ouachita, Union
Sub-basin area
34,4km²
Upstream area
4 969,8km²
Discharge
77,07m³/s
Mean elev.
29m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Bayou Choudrant536 km²
- Bassin de Bayou D'Arbonne491 km²
2 dept-equivalent regions (GADM L2)
- 34.1 km²99.3% of basin
- Union0.3 km²0.7% of basin
2 intersecting protected areas
D 'Arbonne
IUCN IVNational Wildlife Refuge
21.18 km² overlap
D'arbonne Bayou
IUCN VState Wild or Scenic River
0.53 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
437 distinct species · 2 980 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Ouachita River : 26 espèces reliées par 88 interactions GloBI sur 4 types (connectance 11.9%, 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°
17,9°C
Annual rain
1 316mm
Moisture idx (CMI)
-0,07
Runoff
554mm/an
PET
1 415mm
AET
1 035mm
Mean slope
0,7°
Water table
30cm
Forest
83%
Crops
5%
Urban
3%
Protected
63%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)