HydroBASINS lev08 watershed · #5080047760
Bassin de Ramu River
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 : Angoram, Bogia, Middle Ramu
Sub-basin area
2 267,3km²
Upstream area
17 822,6km²
Discharge
1 004,84m³/s
Mean elev.
54m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Guam River2126 km²
- Bassin de Ramu River362 km²
3 dept-equivalent regions (GADM L2)
- BogiaMadang · Papua New Guinea1507.8 km²66.8% of basin
- 437.9 km²19.4% of basin
- Middle RamuMadang · Papua New Guinea311.5 km²13.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
380 distinct species · 1 637 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
26,6°C
Annual rain
2 602mm
Moisture idx (CMI)
0,36
Runoff
1 641mm/an
PET
1 647mm
AET
1 526mm
Mean slope
2,0°
Water table
51cm
Forest
46%
Crops
5%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)