HydroBASINS lev08 watershed · #2080215250
Bassin de Merrasoja
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 : Päijänne Tavastia, Tavastia Proper
Sub-basin area
668,4km²
Upstream area
668,7km²
Discharge
4,46m³/s
Mean elev.
98m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Päijänne Tavastia642.6 km²95.6% of basin
- 29.7 km²4.4% of basin
30 intersecting protected areas
Kutajärven alue
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.52 km² overlap
Kutajärven alue
IUCN Not ReportedSpecial Protection Area (Birds Directive)
10.52 km² overlap
Lake Kutajärvi Area
IUCN Not ReportedWetland of International Importance (Ramsar Site)
10.52 km² overlap
Aurinkovuori
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.30 km² overlap
Private Nature Reserve
2.23 km² overlap
Metsälain erityisen tärkeät elinympäristöt Päijät-Häme
IUCN Not AssignedForest habitats of special importance according to the Forest Act (OECM)
2.04 km² overlap
Private Nature Reserve
1.94 km² overlap
Tiirismaa
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.69 km² overlap
Metsätalouden ympäristötukikohteet Päijät-Häme
IUCN Not AssignedForestry environmental aid contracts (OECM)
1.56 km² overlap
21 more protected areassorted by overlap area
Private Nature Reserve
1.09 km² overlap
Kailanpohjan suojelualue
IUCN IVPrivate Nature Reserve
1.04 km² overlap
Lahdenpohjan suojelualue
IUCN IVPrivate Nature Reserve
0.90 km² overlap
Rominoja
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.78 km² overlap
Private Nature Reserve
0.72 km² overlap
Laasonpohjan suojelualue 4
IUCN IVPrivate Nature Reserve
0.62 km² overlap
Private Nature Reserve
0.57 km² overlap
Teräväisten suojelualue
IUCN IVPrivate Nature Reserve
0.57 km² overlap
Private Nature Reserve
0.53 km² overlap
Private Nature Reserve
0.43 km² overlap
Private Nature Reserve
0.40 km² overlap
Private Nature Reserve
0.39 km² overlap
Private Nature Reserve
0.34 km² overlap
Riihikallio-Pilkanmäki
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.32 km² overlap
Riihikallio-Pilkanmäki
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.32 km² overlap
Asikkalan letot
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.31 km² overlap
Private Nature Reserve
0.30 km² overlap
Kintterön luonnonsuojelualue
IUCN IVPrivate Nature Reserve
0.28 km² overlap
Private Nature Reserve
0.27 km² overlap
Private Nature Reserve
0.25 km² overlap
Aitsupin luonnonsuojelualue
IUCN IVPrivate Nature Reserve
0.24 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 738 distinct species · 306 819 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 Merrasoja : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 4 types (connectance 14.8%, filtre Serrano α=0.2). 7 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
647mm
Moisture idx (CMI)
0,16
Runoff
210mm/an
PET
544mm
AET
417mm
Mean slope
2,5°
Water table
160cm
Forest
53%
Crops
27%
Urban
2%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)