HydroBASINS lev08 watershed · #2080036740
Bassin de Liavasselva
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 3 administrative regions : Fosnes, Høylandet, Nærøy
Sub-basin area
401,6km²
Upstream area
401,6km²
Discharge
2,37m³/s
Mean elev.
203m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 341.6 km²84.5% of basin
- 39.0 km²9.6% of basin
- 0.9 km²0.2% of basin
5 intersecting protected areas
Mjøsund
IUCN IaNature Reserve
39.94 km² overlap
Engan og Liabugen
IUCN IaNature Reserve
2.49 km² overlap
Nature Reserve
0.71 km² overlap
Kvernvasselva
IUCN IaNature Reserve
0.22 km² overlap
Synnes
IUCN IaNature Reserve
0.15 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 077 distinct species · 5 388 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 Liavasselva : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 3 types (connectance 5.4%, filtre Serrano α=0.2). 4 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°
4,3°C
Annual rain
1 713mm
Moisture idx (CMI)
0,75
Runoff
1 534mm/an
PET
426mm
AET
425mm
Mean slope
11,7°
Water table
359cm
Forest
63%
Crops
0%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)