HydroBASINS lev08 watershed · #7080685490
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 3 administrative regions : Clark, Dallas, Hot Spring
Sub-basin area
1 119,6km²
Upstream area
7 149km²
Discharge
112,82m³/s
Mean elev.
90m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ouachita River1442 km²
- Bassin de Caddo River1252 km²
3 dept-equivalent regions (GADM L2)
- ClarkArkansas · United States488.4 km²43.6% of basin
- DallasArkansas · United States417.3 km²37.3% of basin
- Hot SpringArkansas · United States213.5 km²19.1% of basin
2 intersecting protected areas
Reserve Program
0.35 km² overlap
Terre Noire Fee
IUCN VPrivate Conservation Land
0.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 191 distinct species · 14 181 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 : 22 espèces reliées par 67 interactions GloBI sur 3 types (connectance 14.4%, 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°
16,4°C
Annual rain
1 350mm
Moisture idx (CMI)
-0,02
Runoff
479mm/an
PET
1 383mm
AET
1 053mm
Mean slope
1,3°
Water table
75cm
Forest
91%
Crops
10%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)