HydroBASINS lev08 watershed · #2080212050
Bassin de Alhonoja
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
66,1km²
Upstream area
16 508,8km²
Discharge
145,95m³/s
Mean elev.
121m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Pärjänoja2392 km²
- Bassin de Koskenjoki670 km²
1 dept-equivalent regions (GADM L2)
- 66.5 km²100.0% of basin
30 intersecting protected areas
Kaakkurijärvet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.72 km² overlap
Kaakkurijärvet
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.72 km² overlap
Private Nature Reserve
2.42 km² overlap
Kaakkurijärvet (UPM)
IUCN IVPrivate Nature Reserve
0.38 km² overlap
Metsälain erityisen tärkeät elinympäristöt Pirkanmaa
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
0.36 km² overlap
Private Nature Reserve
0.32 km² overlap
Pöllönvuori
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.24 km² overlap
RUUTANAN LUONNONSUOJELUALUE
IUCN IVPrivate Nature Reserve
0.19 km² overlap
Metsätalouden ympäristötukikohteet Pirkanmaa
IUCN Not AssignedForestry environmental aid contracts (OECM)
0.10 km² overlap
21 more protected areassorted by overlap area
Penttilä (Kaakkurijärvet)
IUCN IVPrivate Nature Reserve
0.08 km² overlap
Ruokkeenmaa (Kaakkurijärvet)
IUCN IVPrivate Nature Reserve
0.07 km² overlap
Karhuntappo (Kaakkurijärvet)
IUCN IVPrivate Nature Reserve
0.07 km² overlap
Private Nature Reserve
0.07 km² overlap
Kurkelan metsä
IUCN IVPrivate Nature Reserve
0.05 km² overlap
Private Nature Reserve
0.04 km² overlap
Kontaan jalopuumetsikkö
IUCN Not AssignedProtected Habitat Type
0.03 km² overlap
Private Nature Reserve
0.03 km² overlap
Kaakkurinjärvet (Bonvesta)
IUCN IVPrivate Nature Reserve
0.02 km² overlap
Järvenvainion pähkinäpensaslehto
IUCN Not AssignedProtected Habitat Type
0.02 km² overlap
Liljeroosin metsä
IUCN IVPrivate Nature Reserve
0.02 km² overlap
Ruutanan pähkinäpensaslehto
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Pöllönvuoren pähkinäpensaslehto
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Pähkinämäen lehmusmetsikkö
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Myllyojan jalopuumetsikkö
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
UTOLAN PÄHKINÄPENSASLEHTO
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Kullaankallion pähkinäpensaslehto
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Nokianvirran vuorijalavametsikkö
IUCN Not AssignedProtected Habitat Type
0.01 km² overlap
Private Nature Reserve
0.00 km² overlap
Hakavuoren pähkinäpensaslehto
IUCN Not AssignedProtected Habitat Type
0.00 km² overlap
Melon pähkinäpensaslehto
IUCN Not AssignedProtected Habitat Type
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 768 distinct species · 27 465 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Alhonoja : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 81 interactions GloBI sur 6 types (connectance 12.9%, filtre Serrano α=0.2). 9 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°
3,5°C
Annual rain
601mm
Moisture idx (CMI)
0,07
Runoff
306mm/an
PET
561mm
AET
423mm
Mean slope
3,2°
Water table
307cm
Forest
77%
Crops
17%
Urban
24%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)