HydroBASINS lev08 watershed · #2080257180
Bassin de Hjoån
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 7 administrative regions : Hjo, Jönköping, Karlsborg, Tibro, Tranås +2
Sub-basin area
496,2km²
Upstream area
2 969,1km²
Discharge
14,3m³/s
Mean elev.
112m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Röttleån416 km²
- Bassin · #208026029051 km²
7 dept-equivalent regions (GADM L2)
- 230.0 km²46.1% of basin
- 183.8 km²36.9% of basin
- 38.4 km²7.7% of basin
- 23.3 km²4.7% of basin
- 13.5 km²2.7% of basin
- 9.8 km²2.0% of basin
- 0.0 km²0.0% of basin
30 intersecting protected areas
Vättern (östra)
IUCN Not AssignedNatura 2000 SCI
172.18 km² overlap
Vättern (östra)
IUCN Not ReportedSpecial Protection Area (Birds Directive)
172.18 km² overlap
Vättern (östra)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
172.18 km² overlap
Vättern (östra)
IUCN Not AssignedNatura 2000 SPA
172.18 km² overlap
Västra Vättern
IUCN Not AssignedNatura 2000 SCI
168.02 km² overlap
Västra Vättern
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
168.02 km² overlap
Vättern (södra)
IUCN Not AssignedNatura 2000 SCI
19.17 km² overlap
Vättern (södra)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
19.17 km² overlap
Nature Reserve
0.79 km² overlap
21 more protected areassorted by overlap area
2046641 Grevbäcks Ekhagar
IUCN IVNature Reserve
0.68 km² overlap
2046449 Norra Fågelås
IUCN IVNature Reserve
0.55 km² overlap
Holkaberg
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.54 km² overlap
Holkaberg
IUCN IVNatura 2000 SCI
0.54 km² overlap
2042454 Boerydsberget
IUCN IVNature Reserve
0.37 km² overlap
Hjoåns dalgång
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.21 km² overlap
Hjoåns dalgång
IUCN IVNatura 2000 SCI
0.21 km² overlap
2000411 Hjoåns dalgång
IUCN IVNature Reserve
0.21 km² overlap
Narbäck
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.19 km² overlap
Narbäck
IUCN IVNatura 2000 SCI
0.19 km² overlap
SK 193-2000
IUCN IVNature conservation agreement, Swedish Forest Agency
0.18 km² overlap
Vida Vättern
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.17 km² overlap
Vida Vättern
IUCN Not AssignedNatura 2000 SCI
0.17 km² overlap
2042453 Klevenbranten
IUCN IVNature Reserve
0.16 km² overlap
SK 197-2011
IUCN IVNature conservation agreement, Swedish Forest Agency
0.12 km² overlap
Nature Reserve
0.12 km² overlap
Fågelås prästgård, nord
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.11 km² overlap
Fågelås prästgård, nord
IUCN IVNatura 2000 SCI
0.11 km² overlap
Girabäcken
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.09 km² overlap
2001368 Girabäcken
IUCN IVNature Reserve
0.09 km² overlap
Girabäcken
IUCN IVNatura 2000 SCI
0.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 132 distinct species · 110 957 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Hjoån : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 3 types (connectance 15.3%, filtre Serrano α=0.2). 10 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°
6,0°C
Annual rain
604mm
Moisture idx (CMI)
-0,02
Runoff
158mm/an
PET
617mm
AET
451mm
Mean slope
0,7°
Water table
91cm
Forest
19%
Crops
25%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)