Ruisseau· 8 segments
Le Geer
Crosses 2 administrative regions : Limburg, Liège
Total length
29km
Max discharge
4,6m³/s
Max Strahler
3
Segments matched
8
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- LiègeWallonie · Belgium31.8 kmin this dpt
- LimburgVlaanderen · Belgium4.0 kmin this dpt
11 intersecting protected areas
Jekervallei en bovenloop van de Demervallei
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Basse vallée du Geer
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
NBP-LI-21-0108 type 2
IUCN VINature management plan type 2 (Flemish Region)
Montagne Saint-Pierre
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Montagne Saint-Pierre
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
De Kevie en Kleinmeers
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
NBP/LI/20/0274 type 4
IUCN IVNature management plan type 4 (Flemish Region)
Basse vallée du Geer
IUCN IVCertified Nature Reserve (Walloon Region)
Thier de Boirs
IUCN IVCertified Nature Reserve (Walloon Region)
2 more protected areassorted by area
State Nature Reserve (Walloon Region)
Heyoulle
IUCN IVCertified Nature Reserve (Walloon Region)
1 page = 1 named river (aggregation of 8 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 098 distinct species · 22 775 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Le Geer : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 6 bulles famille, 78 interactions GloBI documentées sur 4 types (connectance 11.1%, filtre Serrano α=0.2). Les 6 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
29km
Max discharge
4,6m³/s
Max Strahler
3
Segments matched
8
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.