HydroBASINS lev08 watershed · #2080240000
Bassin de Skirva
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 : Flesberg, Hjartdal, Kongsberg, Nore og Uvdal, Notodden +2
Sub-basin area
847,5km²
Upstream area
4 110,6km²
Discharge
81,21m³/s
Mean elev.
606m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Måna1824 km²
- Bassin de Mår1439 km²
7 dept-equivalent regions (GADM L2)
- 460.4 km²54.0% of basin
- 345.8 km²40.6% of basin
- 27.1 km²3.2% of basin
- 10.4 km²1.2% of basin
- 7.9 km²0.9% of basin
- 0.5 km²0.1% of basin
- 0.0 km²0.0% of basin
15 intersecting protected areas
Skirvedalen
IUCN IaNature Reserve
21.50 km² overlap
Omnflug
IUCN IaNature Reserve
13.22 km² overlap
Nature Reserve
12.59 km² overlap
Rupefjell og Selslinatten
IUCN IaNature Reserve
9.44 km² overlap
Bratterudskogen
IUCN IaNature Reserve
5.69 km² overlap
Jønjiljo
IUCN Not ReportedEmerald Network
4.61 km² overlap
Jønjiljo
IUCN IaNature Reserve
4.61 km² overlap
Gjuvet
IUCN IaNature Reserve
2.74 km² overlap
Urdalen
IUCN IaNature Reserve
2.24 km² overlap
6 more protected areassorted by overlap area
Bjønnestille
IUCN IaNature Reserve
1.42 km² overlap
Muttjønn
IUCN IaNature Reserve
1.30 km² overlap
Flaaten
IUCN IaNature Reserve
1.07 km² overlap
Buberget
IUCN IaNature Reserve
0.96 km² overlap
Lysthuskollen
IUCN IaNature Reserve
0.43 km² overlap
Elferdalen
IUCN IaNature Reserve
0.23 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 666 distinct species · 42 062 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Skirva : 27 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 7 types (connectance 10.0%, filtre Serrano α=0.2). 12 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°
2,4°C
Annual rain
807mm
Moisture idx (CMI)
0,37
Runoff
507mm/an
PET
502mm
AET
435mm
Mean slope
9,8°
Water table
397cm
Forest
89%
Crops
0%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)