HydroBASINS lev08 watershed · #4080004890
Bassin de 곡교천
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 5 administrative regions : Asan, Cheonan, Gongju, Sejong, Yesan
Sub-basin area
523,6km²
Upstream area
523,6km²
Discharge
11,38m³/s
Mean elev.
107m
Administrative coverage
5 dept-equivalent regions (GADM L2)
- 308.2 km²58.8% of basin
- 190.4 km²36.3% of basin
- SejongSejong · South Korea23.8 km²4.6% of basin
- Yesan0.7 km²0.1% of basin
- 0.6 km²0.1% of basin
12 intersecting protected areas
Catchment Reserve Protection Area
7.20 km² overlap
Urban Natural Park Areas
5.45 km² overlap
Natural Environment Conservation Areas
3.74 km² overlap
Chungnam Asan Songakmyeon
IUCN IVWildlife Protection Area
3.66 km² overlap
Landscape Reserve
IUCN IVLandscape Reserve
3.34 km² overlap
Wildlife Protection Area
1.84 km² overlap
Sapkyo Reservoir
IUCN VIFishery Resource Conservation Area
1.78 km² overlap
Cheonan
IUCN VIWater Source Protection Area
0.59 km² overlap
Onyang
IUCN VIWater Source Protection Area
0.57 km² overlap
3 more protected areassorted by overlap area
Chungnam Cheonan Anseodong
IUCN IVWildlife Protection Area
0.43 km² overlap
Forest Genetic Resources Reserve
0.01 km² overlap
Natural Monument
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 480 distinct species · 38 956 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 곡교천 : 26 espèces reliées par 50 interactions GloBI sur 3 types (connectance 10.1%, filtre Serrano α=0.2). 6 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°
11,4°C
Annual rain
1 245mm
Moisture idx (CMI)
0,15
Runoff
675mm/an
PET
1 052mm
AET
944mm
Mean slope
7,4°
Water table
318cm
Forest
44%
Crops
28%
Urban
44%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)