HydroBASINS lev08 watershed · #2080056070
Bassin de Hjælpegrøften
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 1 administrative regions : Læsø
Sub-basin area
139,1km²
Upstream area
139,1km²
Discharge
2,14m³/s
Mean elev.
4m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 120.3 km²86.0% of basin
17 intersecting protected areas
Læso
IUCN Not ReportedWetland of International Importance (Ramsar Site)
55.07 km² overlap
Strandenge på Læsø og havet syd herfor
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
54.39 km² overlap
Waters around Læsø
IUCN Not ReportedBaltic Sea Protected Area (HELCOM)
54.28 km² overlap
Nordvestlige Kattegat
IUCN Not ReportedSpecial Protection Area (Birds Directive)
53.90 km² overlap
Læsø Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
36.80 km² overlap
Læsø Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
18.18 km² overlap
Strandenge på Læsø og havet syd herfor
IUCN Not ReportedMarine Protected Area (OSPAR)
16.16 km² overlap
Holtemmen, Højsande og Nordmarken
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.32 km² overlap
Læsø
IUCN IVProtected by conservation order, excl. Church surroundings
2.67 km² overlap
8 more protected areassorted by overlap area
Nordre Rønner
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.98 km² overlap
Nordre Rønner
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.98 km² overlap
Waters around Northern Rönner
IUCN Not ReportedBaltic Sea Protected Area (HELCOM)
0.98 km² overlap
Havet omkring Nordre Rønner
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.98 km² overlap
N
IUCN IbMarine Strategy Area
0.87 km² overlap
Havet omkring Nordre Rønner
IUCN Not ReportedMarine Protected Area (OSPAR)
0.62 km² overlap
Horneks Odde
IUCN IVProtected by conservation order, excl. Church surroundings
0.11 km² overlap
Horneks Odde
IUCN IVProtected by conservation order, excl. Church surroundings
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 224 distinct species · 100 718 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Hjælpegrøften : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 5 types (connectance 14.1%, 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°
7,7°C
Annual rain
605mm
Moisture idx (CMI)
0,15
Runoff
470mm/an
PET
517mm
AET
420mm
Mean slope
0,3°
Water table
17cm
Forest
62%
Crops
15%
Urban
0%
Protected
39%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)