Wetland of International Importance (Ramsar Site) · gab
Bas Ogooue
- Area
- 13 637 km²
- IUCN cat.
- Not Reported
- Year
- 2009
Overview
- Designation
- Wetland of International Importance (Ramsar Site)
- Established
- 2009
- Managing authority
- Full information available from the Ramsar Sites Information Service (RSIS) website - https://rsis.ramsar.org/ris/1851
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
2 962 distinct species · 38 515 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 12 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 Bas Ogooue : 11 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 8 interactions GloBI sur 2 types (connectance 12.1%, 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).
Hydrology42 basins · 50 lakes · 19 rivers
Hydrology metrics for this exact territory
Stream length here
1 261,7km
Lake surface here
520,66km²
Basins crossed
42
Max stream order
7
Max drainage
215 218km²
Discharge in basins
35 759,3m³/s
Mean precip.
2 062mm/an
Mean T°
25,8°C
Moisture idx
0,24
Mean runoff
932mm/an
Mean elev. (basins)
89m
Watersheds crossing here
- Bassin de Ezangasub-area1 983 km²overlap1827.45 km²13%
- Bassin de Olimbésub-area1 592,3 km²overlap1356.82 km²10%
- Bassin de Ngouniésub-area1 475,9 km²overlap1244.26 km²9%
- Bassin de M'boumisub-area1 606,3 km²overlap954.39 km²7%
- Bassin de Ogoouésub-area854,4 km²overlap850.63 km²6%
- Bassin de Ogoouésub-area691,4 km²overlap688.26 km²5%
- Bassin de Mbinésub-area752,7 km²overlap682.66 km²5%
- Bassin de Rembo Azingosub-area720 km²overlap635.12 km²5%
- Bassin de Ogoouésub-area595,1 km²overlap592.48 km²4%
33 more basinssorted by overlap
- Bassin de Ogoouésub-area521,7 km²overlap519.40 km²4%
- Bassin de Ogoouésub-area649,6 km²overlap517.95 km²4%
- Bassin de Abangasub-area590 km²overlap495.96 km²4%
- Bassin de Ogoouésub-area465,7 km²overlap463.62 km²3%
- Bassin de Ogoouésub-area447,1 km²overlap445.10 km²3%
- Bassin de Rèmbo Ouangosub-area407,4 km²overlap405.56 km²3%
- Bassin de Rèmbo Ouangosub-area552,1 km²overlap402.24 km²3%
- Bassin de Ogoouésub-area403,2 km²overlap335.15 km²2%
- Bassin de Rèmbo Ouangosub-area434,4 km²overlap334.65 km²2%
- Basin #45360sub-area317,2 km²overlap151.69 km²1%
- Bassin de Missangasub-area476,4 km²overlap126.16 km²1%
- Bassin de Ogoouésub-area124,1 km²overlap123.58 km²1%
- Basin #45250sub-area721 km²overlap104.10 km²1%
- Bassin de Orongasub-area225,2 km²overlap92.47 km²1%
- Bassin de Ogoouésub-area2 127,7 km²overlap69.25 km²1%
- Bassin de Rèmbo Ouangosub-area44,2 km²overlap43.98 km²0%
- Basin #45160sub-area256,8 km²overlap23.11 km²0%
- Bassin de Ogoouésub-area543,1 km²overlap22.77 km²0%
- Basin #57430sub-area303,5 km²overlap22.75 km²0%
- Bassin de Rambouèsub-area377,4 km²overlap20.20 km²0%
- Bassin de Niémbisub-area997,5 km²overlap19.99 km²0%
- Bassin de Rèmbo Ouangosub-area34,2 km²overlap19.76 km²0%
- Bassin de Rembo Kolosub-area1 045,4 km²overlap17.08 km²0%
- Bassin de Gangesub-area734,6 km²overlap10.62 km²0%
- Bassin de Ikoysub-area499,2 km²overlap6.37 km²0%
- Bassin de Ogoouésub-area3,6 km²overlap3.63 km²0%
- Basin #45350sub-area3,1 km²overlap3.08 km²0%
- Basin #49510sub-area125,8 km²overlap1.54 km²0%
- Bassin de Noouésub-area264,6 km²overlap1.50 km²0%
- Bassin de Ovanguésub-area1 347,7 km²overlap1.49 km²0%
- Bassin de Ngouniésub-area2 146,8 km²overlap0.25 km²0%
- Bassin de Rembo N'Komisub-area483,2 km²overlap0.11 km²0%
- Bassin de Rèmbo Ouangosub-area992,4 km²overlap0.01 km²0%
Lakes (50, top by area)
- Onanguearea249 km²avg depth29.2 m
- Lac Azingoarea55,3 km²avg depth11.4 m
- 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 Ziléarea8 km²avg depth6.8 m
- Lac Evaroarea7,7 km²avg depth7.0 m
41 more lakes
- Lac Ompindiarea7,3 km²avg depth4.1 m
- Lac Nyondjé d’Amontarea7 km²avg depth9.4 m
- Lac Inyogoarea6,4 km²avg depth5.9 m
- Lac Déguèliéarea6,2 km²avg depth7.4 m
- Lac Iouandéarea5,3 km²avg depth3.5 m
- Lac Ayèmarea5,2 km²avg depth8.7 m
- Lac Nyayéarea5,2 km²avg depth1.7 m
- Lac Ouambéarea5,1 km²avg depth10.6 m
- Lac Adoléarea4,3 km²avg depth5.9 m
- Lac Igoulouéarea3,7 km²avg depth11.8 m
- Lac Ogondouéarea3,5 km²avg depth7.9 m
- Lac Nguénéarea3,3 km²avg depth4.6 m
- Lac Pandjéarea2,3 km²avg depth2.7 m
- Lac Nyondjé d’Avalarea2,3 km²avg depth9.2 m
- Lac Gombouéarea2,2 km²avg depth6.9 m
- Lac Kébandaarea1,9 km²avg depth6.5 m
- Lac Karilembaarea1,7 km²avg depth3.9 m
- Lake #80748area1,7 km²avg depth1.9 m
- Lac Menguègnarea1,5 km²avg depth5.0 m
- Lac Nyondjé Avalarea1,4 km²avg depth8.5 m
- Lac Ovowéarea1,4 km²avg depth1.9 m
- Lac Bagéarea1,1 km²avg depth6.4 m
- Lac Azougéarea1 km²avg depth3.6 m
- Lac 1407399area1 km²avg depth5.0 m
- Lac 1407127area0,9 km²avg depth4.5 m
- Lac 1407430area0,9 km²avg depth1.9 m
- Lac 1407288area0,9 km²avg depth3.7 m
- Lac 1407405area0,9 km²avg depth5.5 m
- Lac 1407358area0,8 km²avg depth5.5 m
- Lac 1407363area0,8 km²avg depth3.9 m
- Lac 1407432area0,8 km²avg depth1.9 m
- Lac 1407367area0,8 km²avg depth4.8 m
- Lac 1407338area0,7 km²avg depth6.5 m
- Lac 1407369area0,6 km²avg depth4.1 m
- Lac 1407327area0,6 km²avg depth4.1 m
- Lac 1407186area0,6 km²avg depth4.9 m
- Lac 1407379area0,6 km²avg depth6.0 m
- Lac 1407463area0,6 km²avg depth5.0 m
- Lac 1407307area0,6 km²avg depth2.6 m
- Lac 1407211area0,6 km²avg depth3.9 m
- Lac 1407340area0,6 km²avg depth3.6 m
Rivers / streams (19, ord ≥ 4)
- Ogoouéord 7len here441.00 km22%total1966 km
- Rèmbo Ouangoord 5len here154.05 km94%total165 km
- M'boumiord 7len here147.30 km96%total153 km
- Ngouniéord 6len here83.36 km10%total872 km
- Mandjibéord 6len here77.22 km100%total77 km
- Abangaord 5len here52.81 km24%total217 km
- Mbinéord 4len here52.67 km100%total53 km
- Olimbéord 4len here41.54 km100%total42 km
- Rembo Azingoord 4len here41.38 km68%total61 km
- Obandoord 7len here33.12 km96%total34 km
- Missangaord 3len here32.03 km48%total66 km
- Ezangaord 4len here25.28 km100%total25 km
7 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- -0.63579, 10.31457
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.