HydroBASINS lev08 watershed · #1081018390
Bassin de Imo River
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 29 administrative regions : Aboh-Mbaise, Aguata, Ahiazu-Mbaise, Awgu, Bende +24
Sub-basin area
2 375,9km²
Upstream area
2 376,3km²
Discharge
112,38m³/s
Mean elev.
118m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
29 dept-equivalent regions (GADM L2)
- 263.1 km²11.1% of basin
- 222.6 km²9.4% of basin
- 205.6 km²8.7% of basin
- 165.5 km²7.0% of basin
- 164.8 km²7.0% of basin
- 140.2 km²5.9% of basin
- 122.8 km²5.2% of basin
- 101.0 km²4.3% of basin
21 moreFull L2 list
- Unuimo85.3 km² · 3.6%
- Ngor-Okpala84.0 km² · 3.6%
- Ukwa West80.1 km² · 3.4%
- Ezinihitte Mbaise78.4 km² · 3.3%
- Obowo72.1 km² · 3.0%
- Ihitte/Uboma71.0 km² · 3.0%
- Isiala Ngwa North70.7 km² · 3.0%
- Isiala Mbano65.1 km² · 2.8%
- Osisioma Ngwa63.6 km² · 2.7%
- Umuahia South61.2 km² · 2.6%
- Orumba South56.3 km² · 2.4%
- Isiala Ngwa South53.5 km² · 2.3%
- Ideato South50.5 km² · 2.1%
- Aboh-Mbaise46.0 km² · 1.9%
- Etche20.7 km² · 0.9%
- Awgu7.0 km² · 0.3%
- Ahiazu-Mbaise6.1 km² · 0.3%
- Nwangele3.8 km² · 0.2%
- Aguata2.5 km² · 0.1%
- Oyigbo1.8 km² · 0.1%
- Oji-River0.2 km² · 0.0%
3 intersecting protected areas
Upper Imo River
IUCN Not ReportedForest Reserve
70.35 km² overlap
Umuokpara Umuowa Ogee
IUCN Not ReportedForest Reserve
1.22 km² overlap
Umuahia Ibeku
IUCN Not ReportedForest Reserve
1.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
285 distinct species · 939 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 Imo River : 36 espèces reliées par 46 interactions GloBI sur 5 types (connectance 4.3%, filtre Serrano α=0.2). 11 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°
26,3°C
Annual rain
2 140mm
Moisture idx (CMI)
0,26
Runoff
1 453mm/an
PET
1 581mm
AET
1 206mm
Mean slope
1,8°
Water table
83cm
Forest
19%
Crops
42%
Urban
27%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)