Basse Vallée de l'Ouémé, Lagune de Porto-Novo, Lac Nokoué
IUCN VWetland of International Importance (Ramsar Site) · 2000
6 532 km²
Commune · BEN
Allahé
Benin
AwTropical, savannah(100 %)
Species observed
87
Observations
395
Area
71,6km²
Ecological tissue
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Calcul du tissu écologique de cette entité.
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Species present
87 distinct species · 395 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
27,3°C
Annual rain
1 117mm
Warmest m°
35,4°C
Coldest m°
22,3°C
Elevation: 52 m on average (min 21 m, max 83 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
27,3°C
Annual rain
1 117mm
Warmest month
35,4°C
Coldest month
22,3°C
Mean alt.
52m
Min
21m
Max
83m
Std. dev.
13m
Köppen-Geiger (dominant)
AwTropical, savannah(100 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,3
Org. C
15,7g/kg
Clay
18,3%
Sand
62,5%
Silt
19,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Za-Kpota
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,3
Org. C
25,1g/kg
Clay
21,1%
Sand
58,9%
Silt
20,0%
5–15 cm
pH H₂O
6,3
Org. C
12,9g/kg
Clay
16,3%
Sand
64,5%
Silt
19,2%
15–30 cm
pH H₂O
6,3
Org. C
9,0g/kg
Clay
17,5%
Sand
64,2%
Silt
18,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest23.3%
Crops28.5%
Built-up0.8%
Bare soil0.1%
Other (grassland, water…)47.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology
Computing basins, lakes, rivers…
Human pressure
Pop. density
1hab/km²
Built-up
76,6%
Pesticides
13,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN V · 1🌊 Marine · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN