HydroBASINS lev08 watershed · #2080033770
Bassin de Bøelva
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 8 administrative regions : Bamble, Drangedal, Kongsberg, Nome, Porsgrunn +3
Sub-basin area
941,5km²
Upstream area
11 109,4km²
Discharge
236,87m³/s
Mean elev.
223m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Straumen714 km²
- Bassin · #208024414044 km²
8 dept-equivalent regions (GADM L2)
- 714.0 km²75.4% of basin
- 103.6 km²10.9% of basin
- 61.7 km²6.5% of basin
- 42.7 km²4.5% of basin
- 9.5 km²1.0% of basin
- 6.7 km²0.7% of basin
- 4.4 km²0.5% of basin
- 4.0 km²0.4% of basin
30 intersecting protected areas
Skrim og Sauheradfjella
IUCN IaNature Reserve
39.04 km² overlap
Grøssås
IUCN IaNature Reserve
1.80 km² overlap
Murefjell
IUCN IaNature Reserve
1.69 km² overlap
Murefjell
IUCN Not ReportedEmerald Network
1.69 km² overlap
Eikelifjellet
IUCN IaNature Reserve
1.56 km² overlap
Persholknatten
IUCN IaNature Reserve
1.53 km² overlap
Børsesjø
IUCN IaNature Reserve
1.16 km² overlap
Orsjømyra
IUCN IaNature Reserve
1.09 km² overlap
Burmannsfjellet
IUCN IaNature Reserve
1.04 km² overlap
21 more protected areassorted by overlap area
Linddalsliane
IUCN IaNature Reserve
1.04 km² overlap
Frierflogene-Dammane
IUCN Not ReportedEmerald Network
0.79 km² overlap
Høgvollane
IUCN IaNature Reserve
0.76 km² overlap
Frierflogene
IUCN IaNature Reserve
0.69 km² overlap
Værstadfjellet
IUCN IaNature Reserve
0.53 km² overlap
Urdknuten
IUCN IaNature Reserve
0.47 km² overlap
Trolldalsfjellet
IUCN IaNature Reserve
0.34 km² overlap
Røsaker
IUCN IaNature Reserve
0.27 km² overlap
Store Snipen
IUCN IaNature Reserve
0.20 km² overlap
Ringsholmane
IUCN IVWildlife Conservation Area
0.15 km² overlap
Hitterød
IUCN IaNature Reserve
0.14 km² overlap
Åsstranda
IUCN IaNature Reserve
0.11 km² overlap
Dammane
IUCN VProtected Landscape
0.10 km² overlap
Gunnborgdalen
IUCN IaNature Reserve
0.10 km² overlap
Tveitstulmyr
IUCN IaNature Reserve
0.09 km² overlap
Orrhanemyr
IUCN IaNature Reserve
0.07 km² overlap
Hollastulmyr
IUCN IaNature Reserve
0.06 km² overlap
Stranda
IUCN IaNature Reserve
0.06 km² overlap
Omborsnesholmane
IUCN IaNature Reserve
0.05 km² overlap
Heggemyr
IUCN IaNature Reserve
0.05 km² overlap
Vollsfjorden midtre
IUCN IVWildlife Conservation Area
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
11 010 distinct species · 435 874 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Bøelva : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 93 interactions GloBI sur 4 types (connectance 15.6%, 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°
5,5°C
Annual rain
794mm
Moisture idx (CMI)
0,36
Runoff
690mm/an
PET
507mm
AET
433mm
Mean slope
7,5°
Water table
347cm
Forest
84%
Crops
13%
Urban
7%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)