Zone de confluence Mouhoun-Sourou
IUCN VIWetland of International Importance (Ramsar Site) · 2017
232 km²
Commune · BFA
Gassan
Burkina Faso
BShArid, steppe, hot(100 %)
Species observed
80
Observations
151
Area
1 030,3km²
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Species present
80 distinct species · 151 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
28,8°C
Annual rain
738mm
Warmest m°
40,1°C
Coldest m°
17,1°C
Elevation: 269 m on average (min 253 m, max 297 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
28,8°C
Annual rain
738mm
Warmest month
40,1°C
Coldest month
17,1°C
Mean alt.
269m
Min
253m
Max
297m
Std. dev.
10m
Köppen-Geiger (dominant)
BShArid, steppe, hot(100 %)Arid
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,6
Org. C
8,0g/kg
Clay
30,8%
Sand
43,7%
Silt
25,5%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiMaggregated to Nayala
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,6
Org. C
9,4g/kg
Clay
26,1%
Sand
47,4%
Silt
26,5%
5–15 cm
pH H₂O
6,6
Org. C
8,3g/kg
Clay
29,6%
Sand
44,3%
Silt
26,1%
15–30 cm
pH H₂O
6,6
Org. C
6,4g/kg
Clay
36,6%
Sand
39,5%
Silt
23,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest7.0%
Crops32.3%
Built-up0.3%
Bare soil0.3%
Other (grassland, water…)60.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology5 basins · 1 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
46,7km
Lake surface here
0,89km²
Basins crossed
5
Max stream order
7
Max drainage
52 290km²
Discharge in basins
44,4m³/s
Mean precip.
693mm/an
Mean T°
28,8°C
Moisture idx
-0,66
Mean runoff
33mm/an
Mean elev. (basins)
275m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
28,2%
Pesticides
1,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN Not Reported · 3IUCN VI · 1
La Vallée du Sourou
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 2009
212 km²
Confluent du Sourou-Volta Noire
IUCN Not ReportedClassified Forest · 1937
158 km²
Sa
IUCN Not ReportedClassified Forest · 1938
41 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN