HydroBASINS lev08 watershed · #4080526830
Bassin de 홍천강
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 7 administrative regions : Chuncheon, Gapyeong, Hoengseong, Hongcheon, Inje +2
Sub-basin area
1 573,8km²
Upstream area
1 573,8km²
Discharge
29,95m³/s
Mean elev.
376m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- Hongcheon1328.1 km²84.3% of basin
- 172.0 km²10.9% of basin
- Yangpyeong56.2 km²3.6% of basin
- Gapyeong10.4 km²0.7% of basin
- Inje3.1 km²0.2% of basin
- 2.6 km²0.2% of basin
- Hoengseong2.4 km²0.2% of basin
12 intersecting protected areas
Catchment Reserve Protection Area
165.09 km² overlap
Natural Environment Conservation Areas
6.33 km² overlap
Forest Genetic Resources Reserve
2.17 km² overlap
Gangwon Hongcheon Dongmyeon
IUCN IVWildlife Protection Area
1.93 km² overlap
Landscape Reserve
IUCN IVLandscape Reserve
1.93 km² overlap
Taehak
IUCN VIWater Source Protection Area
0.66 km² overlap
SungSan
IUCN VIWater Source Protection Area
0.35 km² overlap
Paldang lake special measure areas for water quality conservation, class 1 district, 2 district
IUCN VISpecial measure areas
0.33 km² overlap
Cheongpyeong Reservoir
IUCN VIFishery Resource Conservation Area
0.25 km² overlap
3 more protected areassorted by overlap area
Riparian Buffer Zone
0.21 km² overlap
Wildlife Protection Area
0.05 km² overlap
Wildlife Protection Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 786 distinct species · 56 070 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 홍천강 : 27 espèces reliées par 61 interactions GloBI sur 5 types (connectance 10.3%, 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°
9,2°C
Annual rain
1 350mm
Moisture idx (CMI)
0,25
Runoff
616mm/an
PET
1 007mm
AET
918mm
Mean slope
13,9°
Water table
482cm
Forest
96%
Crops
2%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)