HydroBASINS lev08 watershed · #2080024980
Bassin de Sæby 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 2 administrative regions : Frederikshavn, Hjørring
Sub-basin area
669,8km²
Upstream area
669,8km²
Discharge
4,85m³/s
Mean elev.
24m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 509.6 km²75.7% of basin
- 136.9 km²20.3% of basin
30 intersecting protected areas
Frederikshavn Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
92.20 km² overlap
Råbjerg Mile og Hulsig Hede
IUCN Not ReportedSpecial Protection Area (Birds Directive)
59.03 km² overlap
Råbjerg Mile og Hulsig Hede
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
59.03 km² overlap
Jerup Hede, Råbjerg og Tolshave Mose
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
43.82 km² overlap
Frederikshavn Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
35.18 km² overlap
Råbjerg og Tolshave Mose
IUCN Not ReportedSpecial Protection Area (Birds Directive)
23.24 km² overlap
Hjørring Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
21.53 km² overlap
Råbjerg Mile
IUCN IVProtected by conservation order, excl. Church surroundings
14.40 km² overlap
Hulsig Hede
IUCN IVProtected by conservation order, excl. Church surroundings
13.96 km² overlap
21 more protected areassorted by overlap area
Skagens Gren og Skagerak
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
13.54 km² overlap
Bangsbo Ådal og omliggende overdrevsområder
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.86 km² overlap
Skagen Gren
IUCN IIIProtected by conservation order, excl. Church surroundings
8.53 km² overlap
Waters around Hirsholmene
IUCN Not ReportedBaltic Sea Protected Area (HELCOM)
7.11 km² overlap
Hirsholmene, havet vest herfor og Ellinge Å's udløb
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.04 km² overlap
Skagens Gren og Skagerrak
IUCN Not ReportedMarine Protected Area (OSPAR)
5.98 km² overlap
Ålborg Bugt, Randers Fjord og Mariager Fjord
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.79 km² overlap
Ålborg Bay, Randers Fjord and Mariager Fjord
IUCN Not ReportedBaltic Sea Protected Area (HELCOM)
5.78 km² overlap
Ålborg Bugt, nordlige del
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.78 km² overlap
Hirsholmene
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.46 km² overlap
Hirsholmene
IUCN IaWetland of International Importance (Ramsar Site)
5.10 km² overlap
Protected by conservation order, excl. Church surroundings
4.06 km² overlap
Hirsholmene, havet vest herfor og Ellinge Å’s udløb
IUCN Not ReportedMarine Protected Area (OSPAR)
3.71 km² overlap
Råbjerg Mile
IUCN IIIProtected by conservation order, excl. Church surroundings
3.14 km² overlap
Hirsholmene
IUCN IIProtected by conservation order, excl. Church surroundings
2.70 km² overlap
Hjørring Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
2.66 km² overlap
Ålborg Bugt, Randers Fjord og Mariager Fjord
IUCN Not ReportedMarine Protected Area (OSPAR)
1.88 km² overlap
Råbjergstene
IUCN IVProtected by conservation order, excl. Church surroundings
1.71 km² overlap
Tolne Bakker
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.69 km² overlap
Tolne skov
IUCN IVProtected by conservation order, excl. Church surroundings
1.63 km² overlap
Tolshave
IUCN VProtected by conservation order, excl. Church surroundings
1.55 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
8 577 distinct species · 1 788 298 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Sæby Å : 13 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 4 types (connectance 23.9%, 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°
7,6°C
Annual rain
636mm
Moisture idx (CMI)
0,19
Runoff
485mm/an
PET
516mm
AET
419mm
Mean slope
1,0°
Water table
80cm
Forest
24%
Crops
29%
Urban
6%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)