HydroBASINS lev08 watershed · #1080668590
Bassin · #1080668590
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 : Kollo, Ouallam, Tillabéry
Sub-basin area
328,5km²
Upstream area
2 692,9km²
Discharge
1,12m³/s
Mean elev.
253m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #10806637901092 km²
- Bassin · #1080663780417 km²
3 dept-equivalent regions (GADM L2)
- 245.2 km²74.9% of basin
- OuallamTillabéry · Niger42.9 km²13.1% of basin
- 39.3 km²12.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
47 distinct species · 80 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 2 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 · #1080668590 : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, 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°
29,1°C
Annual rain
400mm
Moisture idx (CMI)
-0,81
Runoff
19mm/an
PET
2 126mm
AET
335mm
Mean slope
0,5°
Water table
347cm
Forest
0%
Crops
56%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)