HydroBASINS lev08 watershed · #1080019610

Bassin de Rio Onzo

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 3 administrative regions : Ambriz, Dande, Nambuangongo

Pfafstetter: 13190506

Sub-basin area

2 701,8km²

Upstream area

2 702,1km²

Discharge

7,86m³/s

Mean elev.

338m

Administrative coverage

3 dept-equivalent regions (GADM L2)

Nambuangongo
Bengo · Angola
1275.8 km²
47.4% of basin
Ambriz
Bengo · Angola
855.4 km²
31.8% of basin
Dande
Bengo · Angola
559.3 km²
20.8% of basin

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

34 distinct species · 46 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Graphe en cours d’indexation

Calcul du tissu écologique de cette entité.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).

Hydroclimate (BasinATLAS lev08)

Mean T°

25,6°C

Annual rain

456mm

Moisture idx (CMI)

-0,70

Runoff

96mm/an

PET

1 533mm

AET

386mm

Mean slope

3,9°

Water table

315cm

Forest

70%

Crops

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)