HydroBASINS lev08 watershed · #1080670570
Bassin · #1080670570
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 : Abadam, Diffa, Lake Chad
Sub-basin area
89,5km²
Upstream area
154 717,4km²
Discharge
24,99m³/s
Mean elev.
287m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #10806737801711 km²
- Bassin · #1080673600622 km²
3 dept-equivalent regions (GADM L2)
- DiffaDiffa · Niger50.2 km²56.3% of basin
- 37.5 km²42.1% of basin
- 1.4 km²1.6% of basin
2 intersecting protected areas
Lake Chad Wetlands in Nigeria
IUCN Not ReportedWetland of International Importance (Ramsar Site)
5.89 km² overlap
Lac Tchad
IUCN IVWetland of International Importance (Ramsar Site)
3.23 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
143 distinct species · 241 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 · #1080670570 : 24 espèces reliées par 39 interactions GloBI sur 3 types (connectance 9.6%, filtre Serrano α=0.2). 5 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°
27,3°C
Annual rain
247mm
Moisture idx (CMI)
-0,88
Runoff
96mm/an
PET
2 094mm
AET
205mm
Mean slope
0,0°
Water table
30cm
Forest
0%
Crops
23%
Urban
7%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)