HydroBASINS lev08 watershed · #1080722720
Bassin de Dallol Bosso
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 : Boboye, Karimama, Say
Sub-basin area
28,2km²
Upstream area
726 920,2km²
Discharge
960,48m³/s
Mean elev.
185m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mékrou1354 km²
- Bassin de Niger774 km²
3 dept-equivalent regions (GADM L2)
- 13.3 km²47.2% of basin
- 7.5 km²26.6% of basin
- SayTillabéry · Niger7.3 km²26.2% of basin
7 intersecting protected areas
Dosso
IUCN IVPartial Fauna Reserve
19.56 km² overlap
National Park
7.15 km² overlap
W Parks Regional Complex
IUCN IIRegional Park
5.52 km² overlap
W (Benin)
IUCN IINational Park
4.75 km² overlap
Site Ramsar du Complexe W
IUCN IIWetland of International Importance (Ramsar Site)
1.69 km² overlap
W-Arly-Pendjari Complex
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.77 km² overlap
Dallol Bosso
IUCN IVWetland of International Importance (Ramsar Site)
0.46 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
538 distinct species · 3 022 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Dallol Bosso : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 22 interactions GloBI sur 4 types (connectance 7.3%, 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°
29,0°C
Annual rain
648mm
Moisture idx (CMI)
-0,68
Runoff
80mm/an
PET
2 047mm
AET
545mm
Mean slope
1,1°
Water table
158cm
Forest
0%
Crops
28%
Urban
1%
Protected
84%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)