HydroBASINS lev08 watershed · #2080033810
Bassin de Meåna
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 7 administrative regions : Drangedal, Gjerstad, Kragerø, Nissedal, Risør +2
Sub-basin area
450,6km²
Upstream area
450,7km²
Discharge
10,67m³/s
Mean elev.
226m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- 283.3 km²62.5% of basin
- 73.4 km²16.2% of basin
- 39.8 km²8.8% of basin
- 37.9 km²8.4% of basin
- 5.8 km²1.3% of basin
- 1.0 km²0.2% of basin
- 0.5 km²0.1% of basin
22 intersecting protected areas
Solhomfjell og Kvenntjønnane
IUCN IaNature Reserve
36.79 km² overlap
Solhomfjell
IUCN Not ReportedEmerald Network
23.25 km² overlap
Kvenntjønnane
IUCN Not ReportedEmerald Network
10.91 km² overlap
Navassfjell
IUCN IaNature Reserve
4.81 km² overlap
Fossbufjellet
IUCN IaNature Reserve
3.74 km² overlap
Bjønntjenn
IUCN IaNature Reserve
2.96 km² overlap
Navassfjell
IUCN Not ReportedEmerald Network
2.80 km² overlap
Urfjellheia og Dalsheia
IUCN IaNature Reserve
2.01 km² overlap
Bjønntjenn
IUCN Not ReportedEmerald Network
1.22 km² overlap
13 more protected areassorted by overlap area
Iverstadfjellet
IUCN IaNature Reserve
1.09 km² overlap
Urvassliene
IUCN IaNature Reserve
0.90 km² overlap
Bjynnustadfjellet
IUCN IaNature Reserve
0.66 km² overlap
Søndre Gjeskefjell
IUCN IaNature Reserve
0.51 km² overlap
Materialen
IUCN IaNature Reserve
0.26 km² overlap
Materialen
IUCN Not ReportedEmerald Network
0.26 km² overlap
Buråsen
IUCN IaNature Reserve
0.18 km² overlap
Kvernhusmarka
IUCN IaNature Reserve
0.15 km² overlap
Fjosbumyra
IUCN Not ReportedEmerald Network
0.13 km² overlap
Fjosbumyra
IUCN IaNature Reserve
0.13 km² overlap
Lunde
IUCN IaNature Reserve
0.03 km² overlap
Tranmyra
IUCN IaNature Reserve
0.02 km² overlap
Hammartjønn
IUCN IaNature Reserve
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 288 distinct species · 100 995 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Meåna : 34 espèces reliées par 116 interactions GloBI sur 6 types (connectance 11.7%, filtre Serrano α=0.2). 11 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°
5,7°C
Annual rain
909mm
Moisture idx (CMI)
0,46
Runoff
813mm/an
PET
492mm
AET
438mm
Mean slope
7,7°
Water table
375cm
Forest
92%
Crops
0%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)