HydroBASINS lev08 watershed · #2080216690
Bassin de Oikolanjoki
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 : Pirkanmaa, Tavastia Proper
Sub-basin area
975,1km²
Upstream area
2 493,7km²
Discharge
21,42m³/s
Mean elev.
97m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Puujoki748 km²
- Bassin de Tuulensuunjoki115 km²
2 dept-equivalent regions (GADM L2)
- 779.6 km²79.5% of basin
- 201.1 km²20.5% of basin
30 intersecting protected areas
Vanajaveden alue
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.39 km² overlap
Seitsemänlamminsuo-Korpilamminsuo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.57 km² overlap
Bird Wetlands of Vanajavesi Area
IUCN Not ReportedWetland of International Importance (Ramsar Site)
4.26 km² overlap
Vanajaveden lintualueet
IUCN Not ReportedSpecial Protection Area (Birds Directive)
4.25 km² overlap
Aulangon alue
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.53 km² overlap
Janakkalan Suurisuo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.04 km² overlap
State Nature Reserve
1.51 km² overlap
Hanhisuo-Saunasuo-Alajoki
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.46 km² overlap
Private Nature Reserve
1.33 km² overlap
21 more protected areassorted by overlap area
Raimansuo-Miemalanharju
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.31 km² overlap
Ahvenistonharju-Vuorenharju
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.30 km² overlap
Private Nature Reserve
1.22 km² overlap
Private Nature Reserve
1.20 km² overlap
Heinisuo
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.99 km² overlap
Sibeliuksen Metsä
IUCN IVPrivate Nature Reserve
0.97 km² overlap
Kalliomaa (Kalvola)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.94 km² overlap
Private Nature Reserve
0.80 km² overlap
Taipaleensuo-Kolisevankorpi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.75 km² overlap
Private Nature Reserve
0.70 km² overlap
Metsälain erityisen tärkeät elinympäristöt Kanta-Häme
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
0.69 km² overlap
Hattelmalanjärvi
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.61 km² overlap
Vinjalamminharju
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.56 km² overlap
Private Nature Reserve
0.55 km² overlap
Private Nature Reserve
0.52 km² overlap
Lehijärvi
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.52 km² overlap
Lehijärvi
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.52 km² overlap
Private Nature Reserve
0.51 km² overlap
Sattula-Ilveskallio
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.49 km² overlap
Metsälain erityisen tärkeät elinympäristöt Pirkanmaa
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
0.48 km² overlap
State Nature Reserve
0.46 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 766 distinct species · 846 758 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Oikolanjoki : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 100 interactions GloBI sur 6 types (connectance 18.9%, 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°
3,9°C
Annual rain
611mm
Moisture idx (CMI)
0,07
Runoff
271mm/an
PET
570mm
AET
425mm
Mean slope
2,3°
Water table
151cm
Forest
69%
Crops
18%
Urban
6%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)