HydroBASINS lev08 watershed · #2080235170
Bassin de Hallingdalselve
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 8 administrative regions : Flå, Gol, Krødsherad, Modum, Nes +3
Sub-basin area
1 313,3km²
Upstream area
5 132,4km²
Discharge
96,52m³/s
Mean elev.
619m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Hallingdalselve359 km²
- Bassin de Rukkedøla236 km²
8 dept-equivalent regions (GADM L2)
- 526.5 km²39.9% of basin
- 349.1 km²26.4% of basin
- 308.4 km²23.4% of basin
- 113.7 km²8.6% of basin
- 21.4 km²1.6% of basin
- 1.5 km²0.1% of basin
- 0.3 km²0.0% of basin
- 0.0 km²0.0% of basin
23 intersecting protected areas
Hestgjuvnatten
IUCN IaNature Reserve
12.01 km² overlap
Vassfaret og Vidalen
IUCN VProtected Landscape
6.83 km² overlap
Vassfaret og Vidalen
IUCN Not ReportedEmerald Network
6.81 km² overlap
Knipetjennåsen
IUCN IaNature Reserve
4.72 km² overlap
Veteren
IUCN IaNature Reserve
3.79 km² overlap
Haverstingen
IUCN IaNature Reserve
3.24 km² overlap
Flenten
IUCN IaNature Reserve
2.47 km² overlap
Surtebergflaget
IUCN IaNature Reserve
1.48 km² overlap
Laksejuv
IUCN IaNature Reserve
1.38 km² overlap
14 more protected areassorted by overlap area
Høgtidsåsen og Svartfjellet
IUCN IaNature Reserve
1.17 km² overlap
Storås
IUCN IaNature Reserve
1.14 km² overlap
Stavnselva
IUCN IaNature Reserve
1.09 km² overlap
Gulsvikelvi
IUCN IaNature Reserve
0.77 km² overlap
Juvsåsen
IUCN IaNature Reserve
0.72 km² overlap
Sjølingelve
IUCN IaNature Reserve
0.59 km² overlap
Ramfoss
IUCN IaNature Reserve
0.56 km² overlap
Bjørhusnatten
IUCN IaNature Reserve
0.44 km² overlap
Halvfaråsen
IUCN IaNature Reserve
0.44 km² overlap
Dokkene
IUCN IaNature Reserve
0.40 km² overlap
Størrmyran
IUCN IaNature Reserve
0.38 km² overlap
Svangtjernmyra
IUCN IaNature Reserve
0.34 km² overlap
Mastedalen
IUCN IaNature Reserve
0.13 km² overlap
Krødsherad prestegård
IUCN Not ReportedNatural Monument
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 571 distinct species · 79 859 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 Hallingdalselve : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 102 interactions GloBI sur 6 types (connectance 14.5%, filtre Serrano α=0.2). 13 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°
1,7°C
Annual rain
750mm
Moisture idx (CMI)
0,29
Runoff
508mm/an
PET
525mm
AET
440mm
Mean slope
10,8°
Water table
360cm
Forest
86%
Crops
0%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)