HydroBASINS lev08 watershed · #2080240060
Bassin de Svorte
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 : Hjartdal, Notodden, Sauherad, Seljord, Tinn
Sub-basin area
1 006,8km²
Upstream area
1 006,9km²
Discharge
17,46m³/s
Mean elev.
717m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 749.8 km²74.1% of basin
- 204.0 km²20.2% of basin
- 43.9 km²4.3% of basin
- 14.5 km²1.4% of basin
- 0.2 km²0.0% of basin
10 intersecting protected areas
Brattefjell - Vindeggen
IUCN IVProtected Landscape
235.72 km² overlap
Flottin
IUCN IVWildlife Conservation Area
14.65 km² overlap
Vestfjellet og Svartejuv
IUCN IaNature Reserve
5.01 km² overlap
Gausdalen
IUCN IaNature Reserve
2.22 km² overlap
Dalåsen
IUCN IaNature Reserve
2.16 km² overlap
Kleppefjell
IUCN IaNature Reserve
1.74 km² overlap
Semsøyene
IUCN IaNature Reserve
0.69 km² overlap
Semsøyene
IUCN Not ReportedEmerald Network
0.69 km² overlap
Oppsaljuvet
IUCN IaNature Reserve
0.16 km² overlap
1 more protected areassorted by overlap area
Ambjørndalen
IUCN IaNature Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 557 distinct species · 72 407 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Svorte : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 93 interactions GloBI sur 6 types (connectance 15.6%, 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°
1,9°C
Annual rain
870mm
Moisture idx (CMI)
0,44
Runoff
556mm/an
PET
474mm
AET
426mm
Mean slope
10,4°
Water table
468cm
Forest
77%
Crops
0%
Urban
0%
Protected
25%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)