Rivière
Overrijn
Crosses 3 administrative regions : Katwijk, Noordwijk, Oegstgeest
Total length
1km
Max discharge
14,8m³/s
Max Strahler
4
Segments matched
1
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- KatwijkZuid-Holland · Netherlands4.5 kmin this dpt
- OegstgeestZuid-Holland · Netherlands0.6 kmin this dpt
- NoordwijkZuid-Holland · Netherlands0.0 kmin this dpt
3 intersecting protected areas
NNN-ZH
IUCN Not AssignedNature Reserves owned by professional nature management organizations
Coepelduynen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Coepelduynen
IUCN IVNature Conservation Act
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
6 149 distinct species · 324 880 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Overrijn : 36 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 125 interactions GloBI sur 6 types (connectance 12.1%, 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).
Hydrology (HydroRIVERS v10)
Total length
1km
Max discharge
14,8m³/s
Max Strahler
4
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.