HydroBASINS lev08 watershed · #5080188370
Bassin de Sepik
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 4 administrative regions across 2 countries : Keerom, Pegunungan Bintang, Telefomin, Vanimo-Green River
Sub-basin area
2 563,1km²
Upstream area
6 746,7km²
Discharge
771,54m³/s
Mean elev.
235m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oklip1042 km²
- Bassin de Sepik41 km²
4 dept-equivalent regions (GADM L2)
- 1889.7 km²74.1% of basin
- 324.8 km²12.7% of basin
- 193.9 km²7.6% of basin
- 129.0 km²5.1% of basin
1 intersecting protected areas
Pegunungan Jayawijaya
IUCN Not ReportedWildlife Reserve
53.14 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
28 distinct species · 47 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°
25,9°C
Annual rain
3 193mm
Moisture idx (CMI)
0,55
Runoff
2 747mm/an
PET
1 402mm
AET
1 402mm
Mean slope
6,3°
Water table
179cm
Forest
83%
Crops
13%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)