HydroBASINS lev08 watershed · #1080980280
Bassin de Abonyi
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 10 administrative regions : Abakaliki, Ado, Ebonyi, Ezza North, Ezza South +5
Sub-basin area
1 804,4km²
Upstream area
1 804,4km²
Discharge
69,89m³/s
Mean elev.
70m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
10 dept-equivalent regions (GADM L2)
- 415.7 km²23.1% of basin
- 394.8 km²22.0% of basin
- 362.2 km²20.2% of basin
- 235.1 km²13.1% of basin
- 197.6 km²11.0% of basin
- Ezza SouthEbonyi · Nigeria88.3 km²4.9% of basin
- 48.9 km²2.7% of basin
- Ezza NorthEbonyi · Nigeria38.6 km²2.1% of basin
7 intersecting protected areas
Forest Reserve Name Unknown (NGA) No.74
IUCN Not ReportedForest Reserve
7.63 km² overlap
Ishieki
IUCN Not ReportedForest Reserve
5.81 km² overlap
Forest Reserve Name Unknown (NGA) No.69
IUCN Not ReportedForest Reserve
4.22 km² overlap
Effium
IUCN Not ReportedForest Reserve
3.55 km² overlap
Forest Reserve Name Unknown (NGA) No.72
IUCN Not ReportedForest Reserve
3.42 km² overlap
Unuhu Agbaja
IUCN Not ReportedForest Reserve
3.14 km² overlap
Agala
IUCN Not ReportedForest Reserve
2.26 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
252 distinct species · 761 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Abonyi : 33 espèces reliées par 34 interactions GloBI sur 4 types (connectance 4.6%, filtre Serrano α=0.2). 6 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°
27,5°C
Annual rain
1 891mm
Moisture idx (CMI)
0,11
Runoff
1 222mm/an
PET
1 677mm
AET
1 164mm
Mean slope
0,9°
Water table
41cm
Forest
1%
Crops
74%
Urban
8%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)