HydroBASINS lev08 watershed · #1080668920
Bassin · #1080668920
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 5 administrative regions : Namentenga, Oudalan, Sanmatenga, Soum, Séno
Sub-basin area
1 595,1km²
Upstream area
1 595,1km²
Discharge
1,69m³/s
Mean elev.
313m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 1141.1 km²71.8% of basin
- 214.8 km²13.5% of basin
- 171.2 km²10.8% of basin
- 61.6 km²3.9% of basin
- 0.6 km²0.0% of basin
1 intersecting protected areas
Sahel
IUCN IVSylvo-pastoral Reserve and Partial Wildlife Reserve
526.45 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
118 distinct species · 594 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 · #1080668920 : 3 espèces reliées par 3 interactions GloBI sur 1 type (connectance 50.0%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
28,6°C
Annual rain
448mm
Moisture idx (CMI)
-0,79
Runoff
23mm/an
PET
2 103mm
AET
376mm
Mean slope
0,4°
Water table
156cm
Forest
0%
Crops
22%
Urban
0%
Protected
33%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)