HydroBASINS lev08 watershed · #4080605010
Bassin de 양산천
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 : Geumjeong, Ulju, Yangsan
Sub-basin area
229,4km²
Upstream area
229,4km²
Discharge
3,98m³/s
Mean elev.
275m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 227.0 km²98.9% of basin
- 1.2 km²0.5% of basin
- 1.2 km²0.5% of basin
10 intersecting protected areas
Natural Environment Conservation Areas
53.84 km² overlap
Gajisan
IUCN VProvincial Park
53.80 km² overlap
Wildlife Protection Area
16.22 km² overlap
Wildlife Protection Area
13.91 km² overlap
Forest Genetic Resources Reserve
1.57 km² overlap
Hoedong
IUCN VIWater Source Protection Area
0.83 km² overlap
Sinbulsan Wetland
IUCN IVWetland Protected Area
0.31 km² overlap
Hwa-eomneup
IUCN IVWetland Protected Area
0.12 km² overlap
Gyeongnam Yangsan Gyodong
IUCN IVWildlife Protection Area
0.01 km² overlap
1 more protected areassorted by overlap area
Natural Monument
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 950 distinct species · 7 111 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 양산천 : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 61 interactions GloBI sur 5 types (connectance 7.4%, filtre Serrano α=0.2). 9 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°
12,6°C
Annual rain
1 369mm
Moisture idx (CMI)
0,28
Runoff
549mm/an
PET
977mm
AET
943mm
Mean slope
13,7°
Water table
467cm
Forest
74%
Crops
36%
Urban
24%
Protected
25%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)