HydroBASINS lev08 watershed · #2080024780
Bassin de Skals Å
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 3 administrative regions : Mariagerfjord, Randers, Viborg
Sub-basin area
608,3km²
Upstream area
608,3km²
Discharge
9,33m³/s
Mean elev.
35m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 318.8 km²52.2% of basin
- 179.5 km²29.4% of basin
- 112.9 km²18.5% of basin
15 intersecting protected areas
Special Areas of Conservation (Habitats Directive)
73.30 km² overlap
Viborg Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
24.76 km² overlap
Randers Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
17.83 km² overlap
Mariagerfjord Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
9.98 km² overlap
Viborg Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
7.05 km² overlap
Tjele Langsø og Vinge Møllebæk
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.89 km² overlap
Tjele Langsø
IUCN Not ReportedSpecial Protection Area (Birds Directive)
6.83 km² overlap
Mariagerfjord Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
4.21 km² overlap
Randers Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
3.92 km² overlap
6 more protected areassorted by overlap area
Hærup Sø
IUCN VProtected by conservation order, excl. Church surroundings
3.70 km² overlap
Hjarbæk Fjord og Simested Fjord
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.22 km² overlap
Kastbjerg Ådal
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.50 km² overlap
Læsten Bakker
IUCN IVProtected by conservation order, excl. Church surroundings
0.89 km² overlap
Hvidding Krat
IUCN IVProtected by conservation order, excl. Church surroundings
0.83 km² overlap
Vinge Mølledam
IUCN VProtected by conservation order, excl. Church surroundings
0.24 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 002 distinct species · 354 291 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 18 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 Skals Å : 8 espèces reliées par 68 interactions GloBI sur 5 types (connectance 39.8%, 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°
7,4°C
Annual rain
699mm
Moisture idx (CMI)
0,23
Runoff
494mm/an
PET
540mm
AET
446mm
Mean slope
1,3°
Water table
136cm
Forest
1%
Crops
68%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)