HydroBASINS lev08 watershed · #2080033440
Bassin de Skärboälven
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 2 administrative regions : Strömstad, Tanum
Sub-basin area
378,3km²
Upstream area
378,3km²
Discharge
6,44m³/s
Mean elev.
28m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 203.3 km²53.4% of basin
- 98.3 km²25.9% of basin
30 intersecting protected areas
Tanumskusten
IUCN VNatura 2000 SCI
50.54 km² overlap
Tanumskusten
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
50.54 km² overlap
2000957 Tanumskusten
IUCN VNature Conservation Area
48.30 km² overlap
Kosterfjorden-Väderöfjorden
IUCN Not ReportedMarine Protected Area (OSPAR)
34.66 km² overlap
Kosterfjorden-Väderöfjorden
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
29.74 km² overlap
Kosterfjorden-Väderöfjorden
IUCN IINatura 2000 SCI
29.74 km² overlap
National Park
26.72 km² overlap
Koster
IUCN VNatura 2000 SCI
11.45 km² overlap
Koster
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
11.45 km² overlap
21 more protected areassorted by overlap area
2000583 Kosteröarna
IUCN VNature Reserve
10.85 km² overlap
Galtö lera-Älgö lera
IUCN Not ReportedSpecial Protection Area (Birds Directive)
9.48 km² overlap
Galtö lera-Älgö lera
IUCN VNatura 2000 SPA
9.48 km² overlap
Trossö-Kalvö-Lindö
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.25 km² overlap
Trossö-Kalvö-Lindö
IUCN VNatura 2000 SCI
8.25 km² overlap
Nature Reserve
8.22 km² overlap
2000726 Otterön
IUCN VNature Reserve
5.72 km² overlap
Sannäsfjorden
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
4.23 km² overlap
Sannäsfjorden
IUCN VNatura 2000 SCI
4.23 km² overlap
2000723 Tjurpanneområdet
IUCN VNature Reserve
3.78 km² overlap
2001778 Älgöleran
IUCN VNature Conservation Area
3.10 km² overlap
2000585 Saltö
IUCN VNature Reserve
2.84 km² overlap
Tjurpannan
IUCN VNatura 2000 SCI
2.71 km² overlap
Tjurpannan
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.71 km² overlap
2000370 Kragenäs
IUCN VNature Reserve
2.67 km² overlap
2000728 Veddöarkipelagen
IUCN IVNature Reserve
2.13 km² overlap
2043346 Hällsö
IUCN IVNature Reserve
1.76 km² overlap
Musön
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.52 km² overlap
Musön
IUCN VNatura 2000 SCI
1.52 km² overlap
2000587 Orrevikskilen
IUCN IVNature Reserve
1.01 km² overlap
2000617 Västra Rossö
IUCN IaNature Reserve
0.90 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 068 distinct species · 247 094 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 Skärboälven : 19 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 85 interactions GloBI sur 5 types (connectance 17.1%, filtre Serrano α=0.2). 13 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
758mm
Moisture idx (CMI)
0,34
Runoff
570mm/an
PET
501mm
AET
424mm
Mean slope
2,6°
Water table
113cm
Forest
84%
Crops
7%
Urban
0%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)