HydroBASINS lev08 watershed · #1081145820
Bassin de Ogooué
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 : Abanga-Bigné, Lopé, Okano
Sub-basin area
2 127,7km²
Upstream area
147 694,8km²
Discharge
2 976,53m³/s
Mean elev.
351m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mingoué1179 km²
- Bassin de Ogooué83 km²
3 dept-equivalent regions (GADM L2)
- 1515.4 km²71.5% of basin
- 601.5 km²28.4% of basin
- 1.3 km²0.1% of basin
7 intersecting protected areas
Bas Ogooue
IUCN Not ReportedWetland of International Importance (Ramsar Site)
69.25 km² overlap
Ensemble historique d'Otoumbi 1
IUCN Not ReportedHistoric site
30.09 km² overlap
Ensemble historique d'Otoumbi 2
IUCN Not ReportedHistoric site
24.69 km² overlap
Ensemble historique d'Epona Elaemékora
IUCN Not ReportedHistoric site
20.14 km² overlap
Ensemble historique de Junkville
IUCN Not ReportedHistoric site
18.34 km² overlap
Parc national de la Lopé
IUCN IINational park
0.76 km² overlap
Ecosystem and Relict Cultural Landscape of Lopé-Okanda
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
0.70 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
383 distinct species · 1 620 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Ogooué : 17 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 20 interactions GloBI sur 3 types (connectance 8.7%, 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°
24,9°C
Annual rain
1 820mm
Moisture idx (CMI)
0,09
Runoff
494mm/an
PET
1 645mm
AET
1 360mm
Mean slope
8,5°
Water table
312cm
Forest
88%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)