HydroBASINS lev08 watershed · #2080033410
Bassin de Bärfendalsälven
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 4 administrative regions : Lysekil, Munkedal, Sotenäs, Tanum
Sub-basin area
722,4km²
Upstream area
722,4km²
Discharge
7,43m³/s
Mean elev.
40m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 194.6 km²26.8% of basin
- 185.9 km²25.6% of basin
- 135.5 km²18.7% of basin
- 116.2 km²16.0% of basin
30 intersecting protected areas
2001950 Gullmarn
IUCN VNature Conservation Area
46.40 km² overlap
Gullmarsfjorden
IUCN VNatura 2000 SCI
21.48 km² overlap
Gullmarsfjorden
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
21.48 km² overlap
Gullmarsfjorden
IUCN Not ReportedMarine Protected Area (OSPAR)
21.39 km² overlap
2000740 Ramsvikslandet
IUCN VNature Reserve
15.30 km² overlap
Ramsvikslandet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.92 km² overlap
Ramsvikslandet
IUCN VNatura 2000 SCI
7.92 km² overlap
Åbyfjorden
IUCN Not AssignedNatura 2000 SCI
7.91 km² overlap
Åbyfjorden
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.91 km² overlap
21 more protected areassorted by overlap area
Kosterfjorden-Väderöfjorden
IUCN Not ReportedMarine Protected Area (OSPAR)
6.75 km² overlap
Kosterfjorden-Väderöfjorden
IUCN IINatura 2000 SCI
6.69 km² overlap
Kosterfjorden-Väderöfjorden
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.69 km² overlap
Jorefjorden
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.31 km² overlap
Jorefjorden
IUCN VNatura 2000 SCI
5.31 km² overlap
2014991 Väderöarna
IUCN VNature Reserve
5.08 km² overlap
2000731 Hjärterön
IUCN VNature Reserve
3.17 km² overlap
2049539 Åbyfjorden
IUCN Not AssignedWildlife and Plant Sanctuary
2.79 km² overlap
2022437 Stora Bornö
IUCN IaNature Reserve
2.44 km² overlap
2000369 Valön
IUCN VNature Reserve
2.40 km² overlap
Näverkärr
IUCN VNatura 2000 SCI
2.22 km² overlap
2000745 Näverkärr
IUCN VNature Reserve
2.22 km² overlap
Näverkärr
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.22 km² overlap
2000753 Gullmarsskogen
IUCN VNature Reserve
2.14 km² overlap
2001954 Gåsö
IUCN VNature Conservation Area
2.00 km² overlap
2001951 Broälven
IUCN IIINature Conservation Area
1.88 km² overlap
2000746 Hållöarkipelagen
IUCN VNature Reserve
1.71 km² overlap
Malmöfjord
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.69 km² overlap
Malmöfjord
IUCN Not AssignedNatura 2000 SCI
1.69 km² overlap
2000733 Ulön-Dannemark
IUCN VNature Reserve
1.43 km² overlap
2001779 Sandön
IUCN Not AssignedNature Conservation Area
1.19 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
12 967 distinct species · 753 756 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Bärfendalsälven : 30 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 4 types (connectance 10.3%, filtre Serrano α=0.2). 6 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°
7,1°C
Annual rain
738mm
Moisture idx (CMI)
0,30
Runoff
579mm/an
PET
516mm
AET
429mm
Mean slope
3,9°
Water table
171cm
Forest
63%
Crops
15%
Urban
1%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)