HydroBASINS lev08 watershed · #2080174840
Bassin de Hvítá
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 5 administrative regions : Grímsnes- og Grafningshreppur, Hraungerðishreppur, Skeiðahreppur, Villingaholtshreppur, Ölfushreppur
Sub-basin area
255,6km²
Upstream area
4 565,3km²
Discharge
211,14m³/s
Mean elev.
59m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Brúará677 km²
- Bassin de Hvítá164 km²
5 dept-equivalent regions (GADM L2)
- 143.5 km²55.8% of basin
- 71.3 km²27.7% of basin
- 22.9 km²8.9% of basin
- 17.5 km²6.8% of basin
- 2.1 km²0.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
369 distinct species · 3 516 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Hvítá : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 57 interactions GloBI sur 5 types (connectance 14.0%, 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°
4,6°C
Annual rain
1 122mm
Moisture idx (CMI)
0,70
Runoff
1 604mm/an
PET
331mm
AET
327mm
Mean slope
3,4°
Water table
0cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)