Niger-Niandan-Milo
IUCN IVWetland of International Importance (Ramsar Site) · 2002
13 990 km²
Commune · GIN
Norassoba
Guinea
AwTropical, savannah(100 %)
Species observed
89
Observations
103
Area
2 671,7km²
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Species present
89 distinct species · 103 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,7°C
Annual rain
1 247mm
Warmest m°
37,7°C
Coldest m°
17,5°C
Elevation: 394 m on average (min 349 m, max 813 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
26,7°C
Annual rain
1 247mm
Warmest month
37,7°C
Coldest month
17,5°C
Mean alt.
394m
Min
349m
Max
813m
Std. dev.
34m
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
5,9
Org. C
13,7g/kg
Clay
26,6%
Sand
44,3%
Silt
29,1%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: vbGLiMaggregated to Siguiri
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
19,2g/kg
Clay
23,7%
Sand
46,3%
Silt
30,0%
5–15 cm
pH H₂O
5,9
Org. C
14,1g/kg
Clay
26,0%
Sand
44,8%
Silt
29,2%
15–30 cm
pH H₂O
5,9
Org. C
7,7g/kg
Clay
30,0%
Sand
42,0%
Silt
28,0%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest24.4%
Crops4.5%
Built-up0.1%
Bare soil0.3%
Other (grassland, water…)70.8%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology8 basins · 1 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
261,8km
Lake surface here
0,14km²
Basins crossed
8
Max stream order
6
Max drainage
34 081km²
Discharge in basins
546,3m³/s
Mean precip.
1 377mm/an
Mean T°
26,1°C
Moisture idx
-0,34
Mean runoff
299mm/an
Mean elev. (basins)
404m
Watersheds crossing here
- Bassin de Farakobasub-area1 800,6 km²overlap1040.33 km²39%
- Bassin du Nigersub-area543,8 km²overlap425.94 km²16%
- Bassin de Tinkissosub-area1 242,4 km²overlap372.42 km²14%
- Bassin du Nigersub-area765,6 km²overlap331.03 km²12%
- Bassin du Nigersub-area335,7 km²overlap278.83 km²10%
- Bassin de Tinkissosub-area1 150,4 km²overlap151.50 km²6%
- Bassin du Nigersub-area320,9 km²overlap50.35 km²2%
- Bassin du Nigersub-area245,6 km²overlap21.35 km²1%
Lakes (1, top by area)
Rivers / streams (3, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Built-up
8,2%
Pesticides
0,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN IV · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN