HydroBASINS lev08 watershed · #2080222530
Bassin de Sorsajoki
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 2 administrative regions : Kymenlaakso, South Karelia
Sub-basin area
411,2km²
Upstream area
411,2km²
Discharge
4,03m³/s
Mean elev.
79m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 357.4 km²86.4% of basin
- 56.1 km²13.6% of basin
28 intersecting protected areas
Alajalansuo-Hangassuo-Haukkasuo-Pilkkakorvenmäki
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.32 km² overlap
Metsälain erityisen tärkeät elinympäristöt Kymenlaakso
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
0.57 km² overlap
Alatalon luonnonsuojelualue
IUCN IVPrivate Nature Reserve
0.54 km² overlap
Metsätalouden ympäristötukikohteet Kymenlaakso
IUCN Not AssignedForestry environmental aid contracts (OECM)
0.39 km² overlap
Somuranmäki
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.14 km² overlap
Autiomäki
IUCN IVPrivate Nature Reserve
0.14 km² overlap
Itkuvuoren METSO
IUCN IVPrivate Nature Reserve
0.12 km² overlap
Private Nature Reserve
0.12 km² overlap
Sanni ja Toivo
IUCN IVPrivate Nature Reserve
0.09 km² overlap
19 more protected areassorted by overlap area
Vuohiniemen suojelualue
IUCN IVOld Growth Forest Reserve
0.09 km² overlap
Vuohiniemen metsä
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.09 km² overlap
Röykynmäki
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.09 km² overlap
Metsämäki
IUCN IVPrivate Nature Reserve
0.08 km² overlap
Kaivola
IUCN IVPrivate Nature Reserve
0.08 km² overlap
Kolkkananmetsä
IUCN IVPrivate Nature Reserve
0.07 km² overlap
Raitvierinen
IUCN IVPrivate Nature Reserve
0.05 km² overlap
Suurenlähteen suojelualue
IUCN IVPrivate Nature Reserve
0.04 km² overlap
Kurenmaan luonnonsuojelualue
IUCN IVPrivate Nature Reserve
0.04 km² overlap
Suolasen luonnonsuojelualue
IUCN IVPrivate Nature Reserve
0.04 km² overlap
Aholan kuivasniemi
IUCN IVPrivate Nature Reserve
0.03 km² overlap
Metsälain erityisen tärkeät elinympäristöt Etelä-Karjala
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
0.03 km² overlap
Kalliolan luonnonsuojelualue
IUCN IVPrivate Nature Reserve
0.03 km² overlap
Linnamäki
IUCN IVPrivate Nature Reserve
0.02 km² overlap
Niinimäen lehmuslehto
IUCN Not AssignedProtected Habitat Type
0.02 km² overlap
Aavan notko
IUCN IVPrivate Nature Reserve
0.01 km² overlap
Lähteikön luonnonsuojelualue
IUCN IVPrivate Nature Reserve
0.01 km² overlap
Metsätalouden ympäristötukikohteet Etelä-Karjala
IUCN Not AssignedForestry environmental aid contracts (OECM)
0.01 km² overlap
Lauttalamminvuoren lehmusto
IUCN Not AssignedProtected Habitat Type
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 602 distinct species · 82 067 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Sorsajoki : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 53 interactions GloBI sur 4 types (connectance 13.1%, 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°
4,1°C
Annual rain
625mm
Moisture idx (CMI)
0,13
Runoff
304mm/an
PET
545mm
AET
412mm
Mean slope
4,1°
Water table
145cm
Forest
83%
Crops
14%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)