HydroBASINS lev08 watershed · #7080729580
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 : Catahoula, Concordia, La Salle
Sub-basin area
555,2km²
Upstream area
49 134,1km²
Discharge
797,4m³/s
Mean elev.
32m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ouachita River1599 km²
- Bassin de Deer Crek317 km²
3 dept-equivalent regions (GADM L2)
- 554.0 km²99.9% of basin
- La Salle0.8 km²0.1% of basin
- 0.0 km²0.0% of basin
8 intersecting protected areas
Reserve Program
22.46 km² overlap
Us-La-108-4
IUCN Not AssignedConservation Easement
5.08 km² overlap
Us-La-108-6
IUCN Not AssignedConservation Easement
5.01 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Catahoula, LA
IUCN VConservation Easement
3.61 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Catahoula, LA
IUCN VConservation Easement
1.77 km² overlap
US-LA-108-5 Wetlands
IUCN Not AssignedReserve Program
1.48 km² overlap
Us-La-42-7
IUCN Not AssignedConservation Easement
1.21 km² overlap
Conservation Easement
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
774 distinct species · 6 975 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 : 31 espèces reliées par 101 interactions GloBI sur 4 types (connectance 11.7%, filtre Serrano α=0.2). 11 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°
18,5°C
Annual rain
1 455mm
Moisture idx (CMI)
0,02
Runoff
670mm/an
PET
1 430mm
AET
1 090mm
Mean slope
0,8°
Water table
48cm
Forest
40%
Crops
34%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)