HydroBASINS lev08 watershed · #2080034040
Bassin de Tekseåna
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 5 administrative regions : Bjerkreim, Eigersund, Lund, Sirdal, Sokndal
Sub-basin area
811,1km²
Upstream area
811,1km²
Discharge
2,57m³/s
Mean elev.
262m
Administrative coverage
5 dept-equivalent regions (GADM L2)
- 365.0 km²44.8% of basin
- 283.4 km²34.8% of basin
- 118.1 km²14.5% of basin
- 21.6 km²2.7% of basin
- 11.5 km²1.4% of basin
21 intersecting protected areas
Eptavatnet
IUCN Not ReportedEmerald Network
1.11 km² overlap
Eptavatnet
IUCN IaNature Reserve
1.11 km² overlap
Fokksteinane
IUCN IVWildlife Conservation Area
1.01 km² overlap
Flekkefjord
IUCN Not ReportedEmerald Network
0.44 km² overlap
Flekkefjord
IUCN VProtected Landscape
0.44 km² overlap
Målsjuvet
IUCN IaNature Reserve
0.39 km² overlap
Førland/Sletthei
IUCN VProtected Landscape
0.29 km² overlap
Førland/Sletthei og Tverrådalen
IUCN Not ReportedEmerald Network
0.29 km² overlap
Vasshusvika
IUCN IaNature Reserve
0.26 km² overlap
12 more protected areassorted by overlap area
Rekedal
IUCN IaNature Reserve
0.25 km² overlap
Linborgvatnet
IUCN Not ReportedEmerald Network
0.22 km² overlap
Linborgvatnet
IUCN IaNature Reserve
0.22 km² overlap
Årstad
IUCN Not ReportedZoological Protection of Species
0.20 km² overlap
Årstad
IUCN IaNature Reserve
0.17 km² overlap
Adnaråsen
IUCN IaNature Reserve
0.16 km² overlap
Svåholmane
IUCN IaNature Reserve
0.11 km² overlap
Eikebakka
IUCN IaNature Reserve
0.11 km² overlap
Tingelsæte
IUCN IaNature Reserve
0.08 km² overlap
Store og Litle Fokksteinen
IUCN IaNature Reserve
0.07 km² overlap
Tedneholmen
IUCN IaNature Reserve
0.03 km² overlap
Nesvåg
IUCN IaNature Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 443 distinct species · 215 514 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Tekseåna : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 85 interactions GloBI sur 4 types (connectance 14.3%, filtre Serrano α=0.2). 8 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°
5,9°C
Annual rain
1 732mm
Moisture idx (CMI)
0,76
Runoff
1 852mm/an
PET
404mm
AET
404mm
Mean slope
9,4°
Water table
410cm
Forest
47%
Crops
4%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)