HydroBASINS lev08 watershed · #4080003880
Bassin de 회야강
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 19 administrative regions : Buk, Busanjin, Dong, Dongnae, Gangseo +13
Sub-basin area
969,3km²
Upstream area
969,3km²
Discharge
2,06m³/s
Mean elev.
124m
Administrative coverage
19 dept-equivalent regions (GADM L2)
- 251.2 km²25.9% of basin
- Gijang219.2 km²22.6% of basin
- 87.2 km²9.0% of basin
- 56.4 km²5.8% of basin
- 52.2 km²5.4% of basin
- Nam44.1 km²4.6% of basin
- 37.3 km²3.8% of basin
- 34.9 km²3.6% of basin
27 intersecting protected areas
Hoedong
IUCN VIWater Source Protection Area
98.20 km² overlap
Jangsan
IUCN VCounty Park
16.39 km² overlap
Natural Environment Conservation Areas
11.16 km² overlap
Natural Monument
6.99 km² overlap
Gajisan
IUCN VProvincial Park
6.68 km² overlap
Hoeya Dam
IUCN VIWater Source Protection Area
5.93 km² overlap
Nakdonggang Estuary
IUCN IVWetland Protected Area
4.21 km² overlap
Urban Natural Park Areas
2.67 km² overlap
Catchment Reserve Protection Area
2.08 km² overlap
18 more protected areassorted by overlap area
Scenic Site
1.64 km² overlap
Pusan National University research forest
IUCN Not ApplicableResearch forest
0.90 km² overlap
Marine Protected Area
0.30 km² overlap
Marine Protected Area
0.30 km² overlap
Ulsan Namgu Seonamdong
IUCN IVWildlife Protection Area
0.23 km² overlap
Moojechineup
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.19 km² overlap
Moojechineup
IUCN IVWetland Protected Area
0.19 km² overlap
Natural Monument
0.07 km² overlap
Forest Genetic Resources Reserve
0.05 km² overlap
Wildlife Protection Area
0.04 km² overlap
Jangsan Wetland
IUCN IVEcosystem and Landscape Conservation Area
0.04 km² overlap
Natural Monument
0.03 km² overlap
Oryukdo Islets in Busan
IUCN VScenic Site
0.03 km² overlap
Seokendam Valley
IUCN IVEcosystem and Landscape Conservation Area
0.02 km² overlap
Natural Monument
0.01 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
5 149 distinct species · 54 453 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 회야강 : 34 espèces reliées par 70 interactions GloBI sur 3 types (connectance 8.5%, filtre Serrano α=0.2). 7 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°
13,6°C
Annual rain
1 362mm
Moisture idx (CMI)
0,29
Runoff
593mm/an
PET
966mm
AET
945mm
Mean slope
8,9°
Water table
373cm
Forest
31%
Crops
45%
Urban
53%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)