HydroBASINS lev08 watershed · #2080058410
Bassin de Hölkná
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 : Svalbarðshreppur, Öxarfjarðarhreppur, Þórshafnarhreppur
Sub-basin area
567,1km²
Upstream area
567,1km²
Discharge
0,23m³/s
Mean elev.
339m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 414.5 km²72.6% of basin
- 154.3 km²27.0% of basin
- 0.0 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
262 distinct species · 1 120 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Hölkná : 17 espèces reliées par 37 interactions GloBI sur 4 types (connectance 12.3%, filtre Serrano α=0.2). 8 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°
0,9°C
Annual rain
975mm
Moisture idx (CMI)
0,68
Runoff
684mm/an
PET
313mm
AET
299mm
Mean slope
4,6°
Water table
0cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)