HydroBASINS lev08 watershed · #5080010840
Bassin de Sungai Welang
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 : Batu, Kota Pasuruan, Malang, Pasuruan
Sub-basin area
510,6km²
Upstream area
510,8km²
Discharge
21,66m³/s
Mean elev.
600m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 412.2 km²81.1% of basin
- 89.8 km²17.7% of basin
- 6.2 km²1.2% of basin
- Batu0.1 km²0.0% of basin
3 intersecting protected areas
R. Soeryo
IUCN VIGrand Forest Park
15.08 km² overlap
Bromo Tengger Semeru
IUCN IINational Park
11.93 km² overlap
Gunung Baung
IUCN VNature Recreation Park
1.98 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
843 distinct species · 1 733 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 Sungai Welang : 11 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 39 interactions GloBI sur 5 types (connectance 16.9%, filtre Serrano α=0.2). 11 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°
23,2°C
Annual rain
2 215mm
Moisture idx (CMI)
0,20
Runoff
1 337mm/an
PET
1 600mm
AET
1 242mm
Mean slope
5,6°
Water table
125cm
Forest
14%
Crops
55%
Urban
47%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)