HydroBASINS lev08 watershed · #1080754660
Bassin de Ba Illi
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 across 2 countries : Logone et Chari, Mayo-Boneye, N'Djamena
Sub-basin area
2 065,7km²
Upstream area
11 374,6km²
Discharge
71,28m³/s
Mean elev.
310m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mayo Kayo2573 km²
- Bassin de Ba-Illi1108 km²
3 dept-equivalent regions (GADM L2)
- 1308.7 km²63.6% of basin
- 748.7 km²36.4% of basin
- 0.1 km²0.0% of basin
1 intersecting protected areas
Mandelia
IUCN IVFaunal Reserve
588.90 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
77 distinct species · 248 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 4 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 Ba Illi : 4 espèces reliées par 2 interactions GloBI sur 2 types (connectance 33.3%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
28,2°C
Annual rain
671mm
Moisture idx (CMI)
-0,68
Runoff
77mm/an
PET
2 097mm
AET
566mm
Mean slope
0,0°
Water table
3cm
Forest
0%
Crops
7%
Urban
0%
Protected
29%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)