HydroBASINS lev08 watershed · #1080020420
Bassin de Nyanga
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 1 administrative regions : Basse Banio
Sub-basin area
147,3km²
Upstream area
25 075,3km²
Discharge
605,55m³/s
Mean elev.
20m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Nyanga1204 km²
- Bassin de Diboundou1108 km²
1 dept-equivalent regions (GADM L2)
- 146.6 km²100.0% of basin
5 intersecting protected areas
Setté Cama
IUCN VIWetland of International Importance (Ramsar Site)
102.47 km² overlap
Domaine de chasse de Sette-Cama
IUCN Not ReportedHunting Area
102.47 km² overlap
Reserve de faune de la Plaine Ouanga
IUCN Not ReportedFaunal reserve
26.69 km² overlap
National park
16.98 km² overlap
Parc marin de l'embouchure de la Nyanga
IUCN Not ReportedMarine park
0.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
49 distinct species · 185 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 10 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 Nyanga : 10 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 6 interactions GloBI sur 2 types (connectance 13.3%, 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°
25,4°C
Annual rain
1 742mm
Moisture idx (CMI)
0,08
Runoff
907mm/an
PET
1 605mm
AET
1 277mm
Mean slope
1,2°
Water table
34cm
Forest
96%
Crops
8%
Urban
0%
Protected
99%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)