HydroBASINS lev08 watershed · #6080141730
Bassin de Njam
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 across 2 countries : Maripasoula, Tapanahony
Sub-basin area
470,2km²
Upstream area
23 580,5km²
Discharge
684,12m³/s
Mean elev.
203m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Tampok374 km²
- Bassin de Lawa316 km²
2 dept-equivalent regions (GADM L2)
- 355.0 km²75.8% of basin
- 113.1 km²24.2% of basin
1 intersecting protected areas
National Park - Buffer zone/Area of adhesion
129.48 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 162 distinct species · 2 582 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Njam : 31 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 28 interactions GloBI sur 2 types (connectance 5.0%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
24,8°C
Annual rain
2 460mm
Moisture idx (CMI)
0,36
Runoff
906mm/an
PET
1 575mm
AET
1 406mm
Mean slope
6,3°
Water table
201cm
Forest
99%
Crops
0%
Urban
0%
Protected
28%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)