HydroBASINS lev08 watershed · #4080003830
Bassin de 형산강
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 : Gyeongju, Pohang, Ulju, Yeongcheon
Sub-basin area
1 126,3km²
Upstream area
1 126,3km²
Discharge
16,29m³/s
Mean elev.
186m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 828.1 km²73.5% of basin
- 227.2 km²20.2% of basin
- 56.6 km²5.0% of basin
- 14.6 km²1.3% of basin
24 intersecting protected areas
Gyeongju
IUCN VNational Park
100.49 km² overlap
Catchment Reserve Protection Area
33.70 km² overlap
Natural Environment Conservation Areas
27.35 km² overlap
Bomun
IUCN VIWater Source Protection Area
4.86 km² overlap
Angye Dam
IUCN VIWater Source Protection Area
3.53 km² overlap
Angang
IUCN VIWater Source Protection Area
1.73 km² overlap
Wildlife Protection Area
0.73 km² overlap
Pohang-2
IUCN VIWater Source Protection Area
0.49 km² overlap
Landscape Reserve
IUCN IVLandscape Reserve
0.42 km² overlap
15 more protected areassorted by overlap area
Forest Genetic Resources Reserve
0.40 km² overlap
Tapdong
IUCN VIWater Source Protection Area
0.36 km² overlap
Urban Natural Park Areas
0.18 km² overlap
Geoncheon
IUCN VIWater Source Protection Area
0.17 km² overlap
Gyeongbuk Pohang Namgu 1
IUCN IVWildlife Protection Area
0.13 km² overlap
Gyeongbuk Pohang Bukgu 1
IUCN IVWildlife Protection Area
0.06 km² overlap
Wildlife Protection Area
0.05 km² overlap
Wildlife Protection Area
0.05 km² overlap
Wildlife Protection Area
0.05 km² overlap
Natural Monument
0.03 km² overlap
Scenic Site
0.02 km² overlap
Gyeongbuk Pohang Namgu 2
IUCN IVWildlife Protection Area
0.00 km² overlap
Natural Monument
0.00 km² overlap
Natural Monument
0.00 km² overlap
Natural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 950 distinct species · 24 306 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 형산강 : 27 espèces reliées par 51 interactions GloBI sur 5 types (connectance 8.6%, filtre Serrano α=0.2). 8 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 142mm
Moisture idx (CMI)
0,12
Runoff
474mm/an
PET
999mm
AET
904mm
Mean slope
10,1°
Water table
437cm
Forest
52%
Crops
14%
Urban
12%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)