HydroBASINS lev08 watershed · #7080668660
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 5 administrative regions : Garland, Montgomery, Polk, Scott, Yell
Sub-basin area
1 532,6km²
Upstream area
1 532,9km²
Discharge
23,69m³/s
Mean elev.
330m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- MontgomeryArkansas · United States775.3 km²50.6% of basin
- PolkArkansas · United States714.8 km²46.6% of basin
- YellArkansas · United States27.7 km²1.8% of basin
- ScottArkansas · United States8.7 km²0.6% of basin
- GarlandArkansas · United States5.9 km²0.4% of basin
5 intersecting protected areas
Ouachita
IUCN IVNational Wildlife Refuge
224.18 km² overlap
Wild and Scenic River
0.52 km² overlap
Conservation Area
0.31 km² overlap
Black Fork Mountain
IUCN IbWilderness
0.30 km² overlap
Big Fork Creek
IUCN VNatural Area
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 293 distinct species · 22 130 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 : 38 espèces reliées par 92 interactions GloBI sur 4 types (connectance 8.5%, 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°
15,0°C
Annual rain
1 371mm
Moisture idx (CMI)
0,03
Runoff
443mm/an
PET
1 327mm
AET
1 060mm
Mean slope
4,8°
Water table
225cm
Forest
82%
Crops
12%
Urban
0%
Protected
53%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)