HydroBASINS lev08 watershed · #2080226550
Bassin de Ilolanjoki
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 : Eastern Uusimaa, Uusimaa
Sub-basin area
350,2km²
Upstream area
2 825,3km²
Discharge
22,51m³/s
Mean elev.
44m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mustijoki431 km²
- Bassin de Porvoonjoki16 km²
2 dept-equivalent regions (GADM L2)
- 291.5 km²82.8% of basin
- 60.7 km²17.2% of basin
26 intersecting protected areas
State Nature Reserve
0.87 km² overlap
Metsälain erityisen tärkeät elinympäristöt Uusimaa
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
0.76 km² overlap
KYLÄNPÄÄNJÄRVI
IUCN IVPrivate Nature Reserve
0.68 km² overlap
Metsätalouden ympäristötukikohteet Uusimaa
IUCN Not AssignedForestry environmental aid contracts (OECM)
0.48 km² overlap
Peltolan vanha metsä
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.44 km² overlap
Nietoonmetsä
IUCN IVPrivate Nature Reserve
0.22 km² overlap
Einonmetsä
IUCN IVPrivate Nature Reserve
0.14 km² overlap
Hevoshaka
IUCN IVPrivate Nature Reserve
0.10 km² overlap
Tiiläänjärven saari
IUCN Not AssignedTemporary Protection Order
0.10 km² overlap
17 more protected areassorted by overlap area
Tapionsalo
IUCN IVPrivate Nature Reserve
0.10 km² overlap
Tervalantti
IUCN IVPrivate Nature Reserve
0.08 km² overlap
Venninmetsä
IUCN IVPrivate Nature Reserve
0.06 km² overlap
Nietoonmetsä II
IUCN IVPrivate Nature Reserve
0.06 km² overlap
Petkipuurauhan suojelualue
IUCN Not AssignedTemporary Protection Order
0.05 km² overlap
Hakanmetsä
IUCN IVPrivate Nature Reserve
0.05 km² overlap
Myllykivenkallio
IUCN IVPrivate Nature Reserve
0.05 km² overlap
Tuomalan kallio, Suomi 100
IUCN IVPrivate Nature Reserve
0.03 km² overlap
Luonnonmetsä Timo Kaipanen
IUCN IVPrivate Nature Reserve
0.03 km² overlap
Puronotko
IUCN IVPrivate Nature Reserve
0.02 km² overlap
Purolehto
IUCN IVPrivate Nature Reserve
0.02 km² overlap
Tiiläänjärven tervaleppäkorpi
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Träskesflyetin tervaleppäkorpi
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Piilo, Suomi 100
IUCN IVPrivate Nature Reserve
0.00 km² overlap
Korppikallion tervaleppäkorpi
IUCN Not AssignedProtected Habitat Type
0.00 km² overlap
Isojärven tervaleppäkorpi
IUCN Not AssignedProtected Habitat Type
0.00 km² overlap
PAPPILAN HARJUN LUONNONSU
IUCN IVPrivate Nature Reserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 822 distinct species · 49 428 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 Ilolanjoki : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 107 interactions GloBI sur 5 types (connectance 20.3%, 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°
4,5°C
Annual rain
636mm
Moisture idx (CMI)
0,15
Runoff
321mm/an
PET
538mm
AET
411mm
Mean slope
3,1°
Water table
113cm
Forest
82%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)