HydroBASINS lev08 watershed · #2080210690
Bassin de Porrassuonoja
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 : Pirkanmaa
Sub-basin area
188,9km²
Upstream area
2 696,6km²
Discharge
25,79m³/s
Mean elev.
96m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Liesijoki365 km²
- Bassin de Heinälamminoja159 km²
1 dept-equivalent regions (GADM L2)
- 190.1 km²100.0% of basin
22 intersecting protected areas
Vatulanharju-Ulvaanharju
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.85 km² overlap
Metsälain erityisen tärkeät elinympäristöt Pirkanmaa
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
0.72 km² overlap
Metsätalouden ympäristötukikohteet Pirkanmaa
IUCN Not AssignedForestry environmental aid contracts (OECM)
0.49 km² overlap
Tuokkolan metsä
IUCN IVPrivate Nature Reserve
0.12 km² overlap
Siukolan metsä
IUCN IVPrivate Nature Reserve
0.06 km² overlap
Akkasen metsä
IUCN IVPrivate Nature Reserve
0.05 km² overlap
Siirronmaan metsä
IUCN IVPrivate Nature Reserve
0.05 km² overlap
Jokihelmimetsä
IUCN IVPrivate Nature Reserve
0.05 km² overlap
Lahtisen metsä
IUCN IVPrivate Nature Reserve
0.03 km² overlap
13 more protected areassorted by overlap area
Private Nature Reserve
0.02 km² overlap
Private Nature Reserve
0.02 km² overlap
Hanhijärven purolehdot
IUCN IVPrivate Nature Reserve
0.02 km² overlap
Private Nature Reserve
0.02 km² overlap
Private Nature Reserve
0.02 km² overlap
Private Nature Reserve
0.01 km² overlap
Isännän Turkimusoja suomi100
IUCN IVPrivate Nature Reserve
0.01 km² overlap
Patasenvuoren jalopuumetsikkö
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Rapionmäen lehmusmetsikkö
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Turkimusoja
IUCN Not AssignedSite of Species Under Strict Protection
0.00 km² overlap
Private Nature Reserve
0.00 km² overlap
Hanhijärven purolehdot
IUCN IVPrivate Nature Reserve
0.00 km² overlap
OJALAN LUONNONSUOJELUALUE
IUCN IVPrivate Nature Reserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 201 distinct species · 74 620 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Porrassuonoja : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 5 types (connectance 15.9%, filtre Serrano α=0.2). 10 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°
3,4°C
Annual rain
605mm
Moisture idx (CMI)
0,07
Runoff
318mm/an
PET
560mm
AET
422mm
Mean slope
3,8°
Water table
205cm
Forest
83%
Crops
20%
Urban
5%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)