HydroBASINS lev08 watershed · #7080735140
Bassin de Black 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 : Catahoula, Concordia
Sub-basin area
407,2km²
Upstream area
55 011km²
Discharge
931,02m³/s
Mean elev.
17m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ouachita River555 km²
- Bassin de Tensas River314 km²
2 dept-equivalent regions (GADM L2)
- 238.4 km²58.6% of basin
- 168.4 km²41.4% of basin
8 intersecting protected areas
Reserve Program
19.16 km² overlap
Reserve Program
15.76 km² overlap
Watershed Protection
5.86 km² overlap
Us-La-108-13
IUCN Not AssignedConservation Easement
3.20 km² overlap
Us-La-42-9
IUCN Not AssignedConservation Easement
2.97 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Catahoula, LA
IUCN VConservation Easement
2.55 km² overlap
Us-La-42-2
IUCN Not AssignedConservation Easement
2.04 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Catahoula, LA
IUCN VConservation Easement
0.83 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
298 distinct species · 2 092 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 Black River : 33 espèces reliées par 73 interactions GloBI sur 4 types (connectance 9.4%, filtre Serrano α=0.2). 7 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°
18,7°C
Annual rain
1 489mm
Moisture idx (CMI)
0,04
Runoff
667mm/an
PET
1 431mm
AET
1 112mm
Mean slope
0,2°
Water table
9cm
Forest
5%
Crops
56%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)