HydroBASINS lev08 watershed · #2080029430
Bassin de Tölån
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 1 administrative regions : Ostrobothnia
Sub-basin area
624,7km²
Upstream area
624,7km²
Discharge
1,2m³/s
Mean elev.
11m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 608.0 km²96.7% of basin
30 intersecting protected areas
High Coast / Kvarken Archipelago
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
7.96 km² overlap
Närpiön saaristo /Närpiö Archipelago
IUCN Not ReportedBaltic Sea Protected Area (HELCOM)
7.91 km² overlap
Närpiön saaristo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.91 km² overlap
Närpiön saaristo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.91 km² overlap
Kackurmossen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
7.58 km² overlap
Kackurmossen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.58 km² overlap
Merenkurkun saaristo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.62 km² overlap
Merenkurkun saaristo
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.62 km² overlap
Baltic Sea Protected Area (HELCOM)
6.62 km² overlap
21 more protected areassorted by overlap area
Degermossen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.07 km² overlap
Hinjärvi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.19 km² overlap
Hinjärvi
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.19 km² overlap
Risnäsmossen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.80 km² overlap
Södra Björkön 38
IUCN IVPrivate Nature Reserve
2.19 km² overlap
Hinjärv 2
IUCN IVPrivate Nature Reserve
2.14 km² overlap
Grytskäretin vesialue 1
IUCN IbPrivate Nature Reserve
1.75 km² overlap
Petolahdenjokisuisto
IUCN Not ReportedSpecial Protection Area (Birds Directive)
1.42 km² overlap
Petolahdenjokisuisto
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.42 km² overlap
Metsälain erityisen tärkeät elinympäristöt Pohjanmaa
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
0.92 km² overlap
Bergösmfvatten.fredningsomr.
IUCN IbPrivate Nature Reserve
0.87 km² overlap
Samfällt Vattenområde
IUCN IVPrivate Nature Reserve
0.72 km² overlap
Metsätalouden ympäristötukikohteet Pohjanmaa
IUCN Not AssignedForestry environmental aid contracts (OECM)
0.65 km² overlap
Korsnäs bys samfällighet
IUCN IbPrivate Nature Reserve
0.63 km² overlap
Hinjärv 3
IUCN IVPrivate Nature Reserve
0.63 km² overlap
Hinjärvi 1
IUCN IVPrivate Nature Reserve
0.63 km² overlap
Private Nature Reserve
0.58 km² overlap
Halsön 47
IUCN IVPrivate Nature Reserve
0.51 km² overlap
Degermossen 15
IUCN IVPrivate Nature Reserve
0.35 km² overlap
Degermossen 18
IUCN IVPrivate Nature Reserve
0.32 km² overlap
Närpiön saaristo 5
IUCN IbPrivate Nature Reserve
0.29 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 412 distinct species · 29 058 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Tölån : 18 espèces reliées par 83 interactions GloBI sur 5 types (connectance 19.1%, filtre Serrano α=0.2). 12 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°
3,6°C
Annual rain
552mm
Moisture idx (CMI)
0,05
Runoff
295mm/an
PET
527mm
AET
388mm
Mean slope
0,8°
Water table
46cm
Forest
91%
Crops
4%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)