HydroBASINS lev08 watershed · #1080862380
Bassin de Usuma
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 2 administrative regions : Abuja, Kuje
Sub-basin area
238,6km²
Upstream area
1 768km²
Discharge
24,98m³/s
Mean elev.
304m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Jabi575 km²
- Bassin de Gwaska River3 km²
2 dept-equivalent regions (GADM L2)
- 176.1 km²74.1% of basin
- 61.5 km²25.9% of basin
1 intersecting protected areas
Tukoki
IUCN Not ReportedForest Reserve
2.74 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
74 distinct species · 188 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 16 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 Usuma : 15 espèces reliées par 11 interactions GloBI sur 3 types (connectance 9.2%, 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°
26,6°C
Annual rain
1 305mm
Moisture idx (CMI)
-0,28
Runoff
441mm/an
PET
1 810mm
AET
968mm
Mean slope
3,1°
Water table
182cm
Forest
17%
Crops
36%
Urban
12%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)