Rivière· 32 segments
Oreälven
Crosses 5 administrative regions : Härjedalen, Ljusdal, Mora, Orsa, Rättvik
Total length
143km
Max discharge
29,2m³/s
Max Strahler
4
Segments matched
32
River geography5 admin regions · 0 communes
5 administrative regions crossed (GADM L2)
- OrsaDalarna · Sweden94.2 kmin this dpt
- LjusdalGävleborg · Sweden38.3 kmin this dpt
- RättvikDalarna · Sweden14.9 kmin this dpt
- MoraDalarna · Sweden5.5 kmin this dpt
- HärjedalenJämtland · Sweden0.8 kmin this dpt
30 intersecting protected areas
2001159 Stora Korpimäki
IUCN IbNature Reserve
Stora Korpimäki
IUCN IbNatura 2000 SCI
Stora Korpimäki
IUCN IbNatura 2000 SPA
Stora Korpimäki
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Stora Korpimäki
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2046360 Rutimovuo
IUCN IaNature Reserve
2064161 Värmderåsen
IUCN IaNature Reserve
Norra Gällsjön
IUCN IaNatura 2000 SCI
2002460 Norra Gällsjön
IUCN IaNature Reserve
21 more protected areassorted by area
Norra Gällsjön
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2046428 Sandsjöån
IUCN IaNature Reserve
2002473 Österåberget
IUCN IaNature Reserve
Österåberget
IUCN IaNatura 2000 SCI
Österåberget
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Österåberget, öst
IUCN IaNatura 2000 SCI
Österåberget, öst
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2042060 Lindänget
IUCN IVNature Reserve
Lindänget
IUCN IVNatura 2000 SCI
Lindänget
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2022810 Hålåheden
IUCN Not AssignedNature Reserve
SK 719-2005
IUCN IVNature conservation agreement, Swedish Forest Agency
A176768
IUCN Not ApplicableVoluntary set-aside areas
A051948
IUCN Not ApplicableVoluntary set-aside areas
A324040
IUCN Not ApplicableVoluntary set-aside areas
2032249 Långtjärn
IUCN Not AssignedNature Reserve
68E1i1631
IUCN Not ApplicableVoluntary set-aside areas
2002488 Vindförbergs udde
IUCN IIINature Reserve
A381917
IUCN Not ApplicableVoluntary set-aside areas
A177915
IUCN Not ApplicableVoluntary set-aside areas
A082193
IUCN Not ApplicableVoluntary set-aside areas
1 page = 1 named river (aggregation of 32 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
647 distinct species · 8 968 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 Oreälven : 28 espèces reliées par 36 interactions GloBI sur 5 types (connectance 5.4%, 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).
Hydrology (HydroRIVERS v10)
Total length
143km
Max discharge
29,2m³/s
Max Strahler
4
Segments matched
32
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.