Bas Ogooue
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 2009
13 637 km²
Department · GAB
Bendjé
Gabon
AwTropical, savannah(97 %)
Species observed
699
Observations
3 870
Area
7 483km²
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Species present
699 distinct species · 3 870 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
25,4°C
Annual rain
2 689mm
Warmest m°
30,3°C
Coldest m°
20,8°C
Elevation: 32 m on average (min -86 m, max 236 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
25,4°C
Annual rain
2 689mm
Warmest month
30,3°C
Coldest month
20,8°C
Mean alt.
32m
Min
-86m
Max
236m
Std. dev.
37m
Köppen-Geiger (dominant)
AwTropical, savannah(97 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,0
Org. C
38,1g/kg
Clay
26,8%
Sand
47,9%
Silt
25,3%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: wbGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,0
Org. C
45,2g/kg
Clay
26,4%
Sand
48,3%
Silt
25,4%
5–15 cm
pH H₂O
5,0
Org. C
36,4g/kg
Clay
26,1%
Sand
48,4%
Silt
25,5%
15–30 cm
pH H₂O
5,0
Org. C
32,7g/kg
Clay
27,9%
Sand
46,9%
Silt
25,1%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest72.7%
Crops1.3%
Built-up0.1%
Bare soil0.1%
Other (grassland, water…)25.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology21 basins · 36 lakes · 18 rivers
Hydrology metrics for this exact territory
Stream length here
536,9km
Lake surface here
134,63km²
Basins crossed
21
Max stream order
7
Max drainage
215 218km²
Discharge in basins
14 530,6m³/s
Mean precip.
2 058mm/an
Mean T°
25,7°C
Moisture idx
0,30
Mean runoff
1 171mm/an
Mean elev. (basins)
42m
Watersheds crossing here
- Bassin de Olimbésub-area1 592,3 km²overlap1567.07 km²21%
- Bassin de Yombésub-area1 166,8 km²overlap1076.66 km²14%
- Bassin de Gangesub-area734,6 km²overlap731.31 km²10%
- Basin #20700sub-area733,6 km²overlap716.27 km²10%
- Bassin de Rèmbo Ouangosub-area552,1 km²overlap549.66 km²7%
- Bassin de Ogoouésub-area543,1 km²overlap525.84 km²7%
- Bassin de Ogoouésub-area521,7 km²overlap504.26 km²7%
- Bassin de Ogoouésub-area447,1 km²overlap439.40 km²6%
- Bassin de Ogoouésub-area403,2 km²overlap401.42 km²5%
12 more basinssorted by overlap
- Bassin de Rèmbo Ouangosub-area434,4 km²overlap250.53 km²3%
- Basin #20730sub-area798,2 km²overlap216.56 km²3%
- Bassin de Djembagombésub-area958,5 km²overlap203.12 km²3%
- Bassin de Rembo Kolosub-area1 045,4 km²overlap56.84 km²1%
- Bassin de Rèmbo Ouangosub-area44,2 km²overlap43.98 km²1%
- Bassin de Aworiwongasub-area299,5 km²overlap43.69 km²1%
- Bassin de Rèmbo Ouangosub-area992,4 km²overlap38.18 km²1%
- Bassin de Rembo N'Komisub-area2 417,7 km²overlap31.89 km²0%
- Bassin de Rembo N'Komisub-area483,2 km²overlap29.54 km²0%
- Bassin de Niémbisub-area997,5 km²overlap23.38 km²0%
- Bassin de Ezangasub-area1 983 km²overlap16.79 km²0%
- Bassin de Ogoouésub-area595,1 km²overlap16.22 km²0%
Lakes (36, top by area)
- Lac Anenguéarea51,3 km²avg depth1.8 m
- Lac Avangaarea26,6 km²avg depth18.1 m
- Lac Ogogniéarea16,3 km²avg depth6.7 m
- Lac Mandjéarea12,9 km²avg depth1.0 m
- Lac Alombiéarea8,8 km²avg depth4.1 m
- Lac Ompindiarea7,3 km²avg depth4.1 m
- Lac Eliwawanyéarea1,8 km²avg depth9.6 m
- Lake #80748area1,7 km²avg depth1.9 m
- Lac Ovowéarea1,4 km²avg depth1.9 m
27 more lakes
- Lac Bagéarea1,1 km²avg depth6.4 m
- Lac 1407430area0,9 km²avg depth1.9 m
- Lac 1407425area0,6 km²avg depth3.4 m
- Lac 1407417area0,5 km²avg depth1.8 m
- Lac 1407469area0,5 km²avg depth2.5 m
- Lac 1407434area0,4 km²avg depth1.6 m
- Lac 1407251area0,4 km²avg depth4.8 m
- Lac 1407360area0,4 km²avg depth4.1 m
- Lac 1407397area0,3 km²avg depth1.8 m
- Lac 1407423area0,3 km²avg depth1.9 m
- Lac 1407302area0,3 km²avg depth5.3 m
- Lac 1407373area0,3 km²avg depth3.2 m
- Lac 1407395area0,3 km²avg depth1.2 m
- Lac 1407427area0,2 km²avg depth2.0 m
- Lac 1407461area0,2 km²avg depth1.4 m
- Lac 1407420area0,2 km²avg depth2.1 m
- Lac 1407424area0,2 km²avg depth1.8 m
- Lac 1407487area0,2 km²avg depth0.8 m
- Lac 1407195area0,2 km²avg depth3.1 m
- Lac 1407300area0,2 km²avg depth1.6 m
- Lac 1407483area0,1 km²avg depth3.7 m
- Lac 1407256area0,1 km²avg depth5.4 m
- Lac 1407426area0,1 km²avg depth1.6 m
- Lac 1407455area0,1 km²avg depth0.7 m
- Lac 1407403area0,1 km²avg depth0.5 m
- Lac 1407439area0,1 km²avg depth1.4 m
- Lac 1407285area0,1 km²avg depth3.9 m
Rivers / streams (18, ord ≥ 4)
- Ogoouéord 7len here158.70 km8%total1966 km
- Gangeord 4len here59.70 km100%total60 km
- Rèmbo Ouangoord 5len here59.47 km36%total165 km
- Olimbéord 4len here41.54 km100%total42 km
- Akiriord 3len here34.97 km100%total35 km
- Obandoord 7len here34.29 km100%total34 km
- Nazarethord 3len here30.73 km100%total31 km
- Yombéord 2len here24.52 km73%total34 km
- Nkwi Konjoord 2len here21.26 km100%total21 km
- Ompeléord 3len here16.67 km100%total17 km
- Aworiwongaord 3len here13.02 km44%total30 km
- Obandoord 3len here12.51 km81%total16 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,2nW
Built-up
15,1%
Pesticides
19,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas7
IUCN Not Reported · 6IUCN IV · 1🌊 Marine · 7
Reserve Présidentielle Wonga Wongué
IUCN Not ReportedPresidential reserve · 1972
4 260 km²
Reserve aquatique de Mandji-Etimboue
IUCN Not ReportedAquatic reserve · 2017
4 055 km²
Wonga-Wongué
IUCN IVWetland of International Importance (Ramsar Site) · 1986
3 966 km²
Reserve aquatique de Delta de l'Ogooue
IUCN Not ReportedAquatic reserve · 2017
419 km²
Parc marin de l'embouchure d'Ozouri
IUCN Not ReportedMarine park · 2017
116 km²
Complete list7 protected areas
- Bas OgooueWetland of International Importance (Ramsar Site)IUCN Not Reported200913 637 km²
- Reserve Présidentielle Wonga WonguéPresidential reserveIUCN Not Reported19724 260 km²
- Reserve aquatique de Mandji-EtimboueAquatic reserveIUCN Not Reported20174 055 km²
- Wonga-WonguéWetland of International Importance (Ramsar Site)IUCN IV19863 966 km²
- Reserve aquatique de Delta de l'OgooueAquatic reserveIUCN Not Reported2017419 km²
- Parc marin de l'embouchure d'OzouriMarine parkIUCN Not Reported2017116 km²
- Parc marin du Cap LopezMarine parkIUCN Not Reported201712 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN