HydroBASINS lev08 watershed · #2080031420
Bassin de Skärjån
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 : Gävle, Ockelbo, Söderhamn
Sub-basin area
308,5km²
Upstream area
308,5km²
Discharge
2,96m³/s
Mean elev.
34m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 170.8 km²55.1% of basin
- 120.3 km²38.8% of basin
- 1.8 km²0.6% of basin
30 intersecting protected areas
2000463 Axmar
IUCN VNature Reserve
13.36 km² overlap
Axmar-Gåsholma
IUCN VNatura 2000 SPA
11.64 km² overlap
Axmar-Gåsholma
IUCN VNatura 2000 SCI
11.64 km² overlap
Axmar-Gåsholma
IUCN Not ReportedSpecial Protection Area (Birds Directive)
11.64 km² overlap
Axmar-Gåsholma
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.64 km² overlap
Axmar
IUCN Not ReportedBaltic Sea Protected Area (HELCOM)
10.21 km² overlap
Häckelsängs högmosse och Gnagmur
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.70 km² overlap
Häckelsängs högmosse och Gnagmur
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.70 km² overlap
Natura 2000 SCI
3.70 km² overlap
21 more protected areassorted by overlap area
Natura 2000 SPA
3.70 km² overlap
Nature Reserve
3.70 km² overlap
2014480 Storjungfrun
IUCN VNature Reserve
3.27 km² overlap
2014143 Åby Urskog
IUCN IaNature Reserve
3.11 km² overlap
2014014 Skärjån
IUCN IVNature Reserve
1.92 km² overlap
Skärjån
IUCN IVNatura 2000 SCI
1.16 km² overlap
Skärjån
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.16 km² overlap
2001172 Skärjåskogen
IUCN IaNature Reserve
0.72 km² overlap
Gosjön
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.41 km² overlap
Gosjön
IUCN Not AssignedNatura 2000 SCI
0.41 km² overlap
2042967 Axmarbruk
IUCN Not AssignedOthers
0.35 km² overlap
2000704 Hådells gammelskog
IUCN IaNature Reserve
0.16 km² overlap
SK 202-2014
IUCN IaHabitat Protection Area
0.11 km² overlap
SK 1169-2002
IUCN IVNature conservation agreement, Swedish Forest Agency
0.10 km² overlap
2000321 Skämningsön
IUCN Not AssignedNature Reserve
0.10 km² overlap
2001161 Svartstensudden
IUCN Not AssignedNature Reserve
0.07 km² overlap
Hådells gammelskog
IUCN IaNatura 2000 SCI
0.07 km² overlap
Hådells gammelskog
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.07 km² overlap
SK 113-1995
IUCN IVNature conservation agreement, Swedish Forest Agency
0.04 km² overlap
SK 438-2002
IUCN IaHabitat Protection Area
0.03 km² overlap
SK 748-2003
IUCN IaHabitat Protection Area
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 276 distinct species · 37 796 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Skärjån : 21 espèces reliées par 85 interactions GloBI sur 5 types (connectance 14.3%, filtre Serrano α=0.2). 14 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
625mm
Moisture idx (CMI)
0,09
Runoff
306mm/an
PET
567mm
AET
427mm
Mean slope
1,6°
Water table
100cm
Forest
96%
Crops
0%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)