HydroLAKES lake · #142797
Nedre Helgåvatnet
Surface area
3,52km²
Avg depth
27,8m
Volume
97,78km³
Shoreline
11,8km
Administrative coverage
1 dept-equivalent regions (GADM L2)
- RanaNordland · Norway3.54 km²100.0% of lake
Computed live · HydroLAKES × GADM × WDPA · cached after first hit.
Species present
80 distinct species · 81 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 Nedre Helgåvatnet : 18 espèces reliées par 18 interactions GloBI sur 3 types (connectance 8.6%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Lake statistics (HydroLAKES)
Surface
3,52km²
Avg depth
27,8m
Volume
97,780km³
Watershed
62km²
Shoreline
11,8km
Shore dev. idx
1,77
Residence time
255days
Elevation
67m
HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.