Ruisseau· 16 segments
Aa
Crosses 12 administrative regions : Antwerpen, Asten, Bernheze, Deurne, Helmond +7
Total length
178km
Max discharge
11,8m³/s
Max Strahler
3
Segments matched
16
River geography12 admin regions · 0 communes
12 administrative regions crossed (GADM L2)
- MeierijstadNoord-Brabant · Netherlands23.8 kmin this dpt
- AntwerpenVlaanderen · Belgium11.2 kmin this dpt
- Sint-MichielsgestelNoord-Brabant · Netherlands8.1 kmin this dpt
- SomerenNoord-Brabant · Netherlands7.8 kmin this dpt
- BernhezeNoord-Brabant · Netherlands5.9 kmin this dpt
- LaarbeekNoord-Brabant · Netherlands3.2 kmin this dpt
- AstenNoord-Brabant · Netherlands2.6 kmin this dpt
- UdenNoord-Brabant · Netherlands0.2 kmin this dpt
- HilvarenbeekNoord-Brabant · Netherlands0.0 kmin this dpt
- HelmondNoord-Brabant · Netherlands0.0 kmin this dpt
- Reusel-De MierdenNoord-Brabant · Netherlands0.0 kmin this dpt
- DeurneNoord-Brabant · Netherlands0.0 kmin this dpt
12 intersecting protected areas
NNN-NB
IUCN Not AssignedNature Reserves owned by professional nature management organizations
Arendonk, Merksplas, Oud-Turnhout, Ravels en Turnhout
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Vennen, heiden en moerassen rond Turnhout
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Kempenland-West
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Kempenland-West
IUCN IVNature Conservation Act
NBP-AN-19-0143 type 2
IUCN VINature management plan type 2 (Flemish Region)
NBP-AN-19-0138 type 2
IUCN VINature management plan type 2 (Flemish Region)
NBP-AN-19-0138 type 3
IUCN IVNature management plan type 3 (Flemish Region)
NBP/AN/19/0150 type 2
IUCN VINature management plan type 2 (Flemish Region)
3 more protected areassorted by area
De Ravelse vennen
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
NBP-AN-21-0022 type 4
IUCN IVNature management plan type 4 (Flemish Region)
NBP-AN-19-0101 type 4
IUCN IVNature management plan type 4 (Flemish Region)
1 page = 1 named river (aggregation of 16 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
3 351 distinct species · 99 207 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Aa : 30 espèces + 7 bulles famille, 67 interactions GloBI documentées sur 4 types (connectance 10.1%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
178km
Max discharge
11,8m³/s
Max Strahler
3
Segments matched
16
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.