Basse Vallée de l'Ouémé, Lagune de Porto-Novo, Lac Nokoué
IUCN VWetland of International Importance (Ramsar Site) · 2000
6 532 km²
Commune · BEN
Calavi
Benin
AwTropical, savannah(100 %)
Species observed
1 492
Observations
9 244
Area
53,9km²
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
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Species present
1 492 distinct species · 9 244 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,6°C
Annual rain
1 238mm
Warmest m°
30,4°C
Coldest m°
23,2°C
Elevation: 15 m on average (min -5 m, max 34 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
26,6°C
Annual rain
1 238mm
Warmest month
30,4°C
Coldest month
23,2°C
Mean alt.
15m
Min
-5m
Max
34m
Std. dev.
11m
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
5,8
Org. C
22,0g/kg
Clay
21,8%
Sand
64,3%
Silt
13,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Abomey-Calavi
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
33,6g/kg
Clay
21,2%
Sand
64,4%
Silt
14,4%
5–15 cm
pH H₂O
5,8
Org. C
18,9g/kg
Clay
21,5%
Sand
64,6%
Silt
13,9%
15–30 cm
pH H₂O
5,8
Org. C
13,5g/kg
Clay
22,7%
Sand
63,7%
Silt
13,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest3.5%
Crops3.4%
Built-up20.6%
Bare soil0.4%
Other (grassland, water…)72.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 0 rivers
Hydrology metrics for this exact territory
Lake surface here
9,11km²
Basins crossed
2
Max drainage
58 742km²
Discharge in basins
13,3m³/s
Mean precip.
1 110mm/an
Mean T°
27,2°C
Moisture idx
-0,26
Mean runoff
248mm/an
Mean elev. (basins)
44m
Watersheds crossing here
Lakes (1, top by area)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
29hab/km²
Night light
7,9nW
Built-up
2 063,7%
Pesticides
12,3kg/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