HydroBASINS lev08 watershed · #2080248060

Bassin de Friaån

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 : Gullspång, Mariestad, Töreboda

324% lakePfafstetter: 24480804

Sub-basin area

491km²

Upstream area

491,1km²

Discharge

3,65m³/s

Mean elev.

76m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin · #2080248140327 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

Mariestad
Västra Götaland · Sweden
294.7 km²
59.7% of basin
Töreboda
Västra Götaland · Sweden
109.9 km²
22.3% of basin
Gullspång
Västra Götaland · Sweden
89.1 km²
18.0% of basin

30 intersecting protected areas

2000383 Kalvö skärgård
IUCN Ib
Nature Reserve
12.68 km² overlap
Kalvö Skärgård
IUCN Ib
Natura 2000 SPA
12.66 km² overlap
Kalvö Skärgård
IUCN Ib
Natura 2000 SCI
12.66 km² overlap
Kalvö Skärgård
IUCN Not Reported
Special Protection Area (Birds Directive)
12.66 km² overlap
Kalvö Skärgård
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
12.66 km² overlap
2014329 Karsmossen
IUCN Ia
Nature Reserve
6.10 km² overlap
Fredsbergs mosse
IUCN Not Assigned
Natura 2000 SPA
5.40 km² overlap
Fredsbergs mosse
IUCN Not Assigned
Natura 2000 SCI
5.40 km² overlap
Fredsbergs mosse
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
5.40 km² overlap

21 more protected areassorted by overlap area

Fredsbergs mosse
IUCN Not Reported
Special Protection Area (Birds Directive)
5.40 km² overlap
2025535 Fällholmarnas nordskär
IUCN Not Assigned
Wildlife and Plant Sanctuary
0.33 km² overlap
2025552 Stora Marpil och Sjötorps Svartskär
IUCN Not Assigned
Wildlife and Plant Sanctuary
0.22 km² overlap
2000350 Surö bokskog
IUCN IV
Nature Reserve
0.21 km² overlap
Surö bokskog
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.20 km² overlap
Surö bokskog
IUCN IV
Natura 2000 SCI
0.20 km² overlap
2025449 Hulan
IUCN Ia
Nature Reserve
0.18 km² overlap
SK 221-2010
IUCN Ia
Habitat Protection Area
0.16 km² overlap
Greby backar
IUCN Not Assigned
Natura 2000 SCI
0.14 km² overlap
Greby backar
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.14 km² overlap
2025706 Gervikeskären
IUCN Not Assigned
Wildlife and Plant Sanctuary
0.13 km² overlap
SK 1017-2003
IUCN IV
Nature conservation agreement, Swedish Forest Agency
0.09 km² overlap
Karsmossen, Store ö
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
0.07 km² overlap
Karsmossen, Store ö
IUCN Ia
Natura 2000 SCI
0.07 km² overlap
A026790
IUCN Not Applicable
Voluntary set-aside areas
0.07 km² overlap
2025764 Kvarnholmen
IUCN Not Assigned
Wildlife and Plant Sanctuary
0.06 km² overlap
SK 625-2006
IUCN Ia
Habitat Protection Area
0.06 km² overlap
SK 218-1997
IUCN Ia
Habitat Protection Area
0.06 km² overlap
SK 594-2003
IUCN Ia
Habitat Protection Area
0.05 km² overlap
2025515 Mosundets skär
IUCN Not Assigned
Wildlife and Plant Sanctuary
0.05 km² overlap
SK 699-2006
IUCN Ia
Habitat Protection Area
0.05 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

3 100 distinct species · 74 181 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 35 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Friaån : 24 espèces reliées par 101 interactions GloBI sur 5 types (connectance 16.0%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

101

Connectance

0.160

Patrimoniales

Plus dense que (national)0 %(top 100%)

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

618mm

Moisture idx (CMI)

0,02

Runoff

241mm/an

PET

605mm

AET

450mm

Mean slope

1,0°

Water table

106cm

Forest

39%

Crops

22%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)