HydroBASINS lev08 watershed · #2080036780
Bassin de Sørvasselva
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 : Bindal, Leka, Nærøy, Vikna
Sub-basin area
1 249,5km²
Upstream area
1 249,5km²
Discharge
32,87m³/s
Mean elev.
134m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 533.2 km²42.4% of basin
- 321.1 km²25.5% of basin
- 258.4 km²20.5% of basin
- 91.2 km²7.3% of basin
20 intersecting protected areas
Simle
IUCN Not ReportedEmerald Network
41.78 km² overlap
Simle
IUCN IaNature Reserve
41.78 km² overlap
West-Vikna Archipelago
IUCN IaWetland of International Importance (Ramsar Site)
23.38 km² overlap
Borgan og Frelsøy
IUCN Not ReportedZoological Protection of Species
8.42 km² overlap
Borgan og Frelsøy
IUCN IaNature Reserve
8.22 km² overlap
Borgan og Frelsøy
IUCN Not ReportedEmerald Network
8.22 km² overlap
Kvaløy og Rauøy
IUCN Not ReportedZoological Protection of Species
5.31 km² overlap
Nærøy prestegård
IUCN IaNature Reserve
3.59 km² overlap
Skeisneset
IUCN Not ReportedEmerald Network
2.12 km² overlap
11 more protected areassorted by overlap area
Skeisneset
IUCN IVWildlife Conservation Area
2.12 km² overlap
Kvaløy og Rauøy
IUCN Not ReportedEmerald Network
1.43 km² overlap
Kvaløy og Rauøy
IUCN IaNature Reserve
1.43 km² overlap
Leknesøyene
IUCN IVWildlife Conservation Area
0.96 km² overlap
Horsbergvatnet
IUCN IaNature Reserve
0.37 km² overlap
Stormyra, Årlivatnet
IUCN IaNature Reserve
0.35 km² overlap
Sunndalslia
IUCN IaNature Reserve
0.31 km² overlap
Kjønsøyhopen
IUCN IVWildlife Conservation Area
0.27 km² overlap
Kanalen
IUCN IaNature Reserve
0.11 km² overlap
Singsmyra, Svinøya
IUCN IaNature Reserve
0.11 km² overlap
Kjønsøyhopen
IUCN IaNature Reserve
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 609 distinct species · 19 348 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 Sørvasselva : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 68 interactions GloBI sur 6 types (connectance 11.4%, filtre Serrano α=0.2). 9 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°
4,8°C
Annual rain
1 697mm
Moisture idx (CMI)
0,75
Runoff
1 519mm/an
PET
425mm
AET
423mm
Mean slope
10,4°
Water table
297cm
Forest
62%
Crops
0%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)