HydroBASINS lev08 watershed · #2080025280
Bassin de Ryom 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 : Norddjurs, Syddjurs
Sub-basin area
499,3km²
Upstream area
499,5km²
Discharge
7,33m³/s
Mean elev.
23m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 263.0 km²52.4% of basin
- 238.5 km²47.5% of basin
6 intersecting protected areas
Syddjurs Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
20.57 km² overlap
Norddjurs Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
7.70 km² overlap
Ramten og Dystrup Sø
IUCN VProtected by conservation order, excl. Church surroundings
2.05 km² overlap
Norddjurs Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
1.74 km² overlap
Syddjurs Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
0.95 km² overlap
Eldrup Skov og søer og moser i Løvenholm Skov
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 710 distinct species · 377 107 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 Ryom Å : 13 espèces reliées par 83 interactions GloBI sur 5 types (connectance 32.8%, filtre Serrano α=0.2). 10 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
584mm
Moisture idx (CMI)
0,03
Runoff
409mm/an
PET
567mm
AET
439mm
Mean slope
1,3°
Water table
93cm
Forest
6%
Crops
57%
Urban
2%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)