HydroBASINS lev08 watershed · #1080802520
Bassin de Niandan
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Kankan, Kouroussa
Sub-basin area
648km²
Upstream area
11 362,3km²
Discharge
212,22m³/s
Mean elev.
426m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mafou2534 km²
- Bassin de Niandan824 km²
2 dept-equivalent regions (GADM L2)
- 560.3 km²86.8% of basin
- 85.1 km²13.2% of basin
1 intersecting protected areas
Niger-Niandan-Milo
IUCN IVWetland of International Importance (Ramsar Site)
645.34 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 distinct species · 16 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 2 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 Bassin de Niandan : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
25,8°C
Annual rain
1 569mm
Moisture idx (CMI)
-0,27
Runoff
426mm/an
PET
2 139mm
AET
1 127mm
Mean slope
2,9°
Water table
165cm
Forest
57%
Crops
5%
Urban
1%
Protected
98%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)