HydroBASINS lev08 watershed · #2080250960
Bassin de Norsälven
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 : Grums, Karlstad, Säffle
Sub-basin area
745,5km²
Upstream area
5 965,8km²
Discharge
63,51m³/s
Mean elev.
60m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Malsjöån1108 km²
- Bassin de Norsälven559 km²
3 dept-equivalent regions (GADM L2)
- 571.9 km²76.3% of basin
- 104.9 km²14.0% of basin
- 72.7 km²9.7% of basin
30 intersecting protected areas
Värmlandsskärgården
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
41.17 km² overlap
Värmlandsskärgården
IUCN Not ReportedSpecial Protection Area (Birds Directive)
41.17 km² overlap
Värmlandsskärgården
IUCN VNatura 2000 SPA
41.17 km² overlap
Värmlandsskärgården
IUCN VNatura 2000 SCI
41.17 km² overlap
Nature Reserve
36.19 km² overlap
Millesvik och Lurö skärgård
IUCN Not ReportedSpecial Protection Area (Birds Directive)
19.10 km² overlap
Millesvik och Lurö skärgård
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.10 km² overlap
Natura 2000 SCI
19.10 km² overlap
Natura 2000 SPA
19.10 km² overlap
21 more protected areassorted by overlap area
2002212 Lurö skärgård
IUCN VNature Reserve
19.10 km² overlap
Nature Reserve
4.39 km² overlap
Brosjön
IUCN Not ReportedSpecial Protection Area (Birds Directive)
2.36 km² overlap
Brosjön
IUCN Not AssignedNatura 2000 SPA
2.36 km² overlap
2002206 Getgarsudde
IUCN IaNature Reserve
1.92 km² overlap
SK 524-2018
IUCN IVNature conservation agreement
1.57 km² overlap
2041351 Bratten
IUCN Not AssignedWildlife and Plant Sanctuary
0.17 km² overlap
SK 518-2001
IUCN IaHabitat Protection Area
0.07 km² overlap
SK 994-2003
IUCN IVNature conservation agreement, Swedish Forest Agency
0.07 km² overlap
SK 88-1998
IUCN IaHabitat Protection Area
0.07 km² overlap
2055850 Fågelskyddsområdet Måkskär
IUCN Not AssignedWildlife and Plant Sanctuary
0.07 km² overlap
SK 355-2002
IUCN IVNature conservation agreement, Swedish Forest Agency
0.07 km² overlap
2055848 Fågelskyddsområdet Åkersholmarna
IUCN Not AssignedWildlife and Plant Sanctuary
0.06 km² overlap
2055849 Fågelskyddsområdet Småklubbarna
IUCN Not AssignedWildlife and Plant Sanctuary
0.06 km² overlap
SK 360-2002
IUCN IVNature conservation agreement, Swedish Forest Agency
0.05 km² overlap
SK 145-2000
IUCN IaHabitat Protection Area
0.04 km² overlap
SK 1052-2005
IUCN IVNature conservation agreement, Swedish Forest Agency
0.04 km² overlap
SK 520-2001
IUCN IaHabitat Protection Area
0.04 km² overlap
SK 359-2002
IUCN IVNature conservation agreement, Swedish Forest Agency
0.04 km² overlap
SK 353-2002
IUCN IVNature conservation agreement, Swedish Forest Agency
0.04 km² overlap
SK 17-2022
IUCN IaHabitat Protection Area
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 281 distinct species · 98 438 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Norsälven : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 73 interactions GloBI sur 5 types (connectance 16.8%, filtre Serrano α=0.2). 12 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°
5,9°C
Annual rain
649mm
Moisture idx (CMI)
0,10
Runoff
290mm/an
PET
582mm
AET
447mm
Mean slope
1,1°
Water table
103cm
Forest
31%
Crops
0%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)