Rivière· 2 segments
Dérivation des Prés du Hem
Crosses 3 administrative regions : Hainaut, Nord, West-Vlaanderen
Total length
3km
Max discharge
28m³/s
Max Strahler
4
Segments matched
2
River geography3 admin regions · 3 communes
3 administrative regions crossed (GADM L2)
- NordHauts-de-France · France2.9 kmin this dpt
- West-VlaanderenVlaanderen · Belgium0.0 kmin this dpt
- HainautWallonie · Belgium0.0 kmin this dpt
3 communes (L5)For countries with L5
- Nieppe2.05 km
- Armentières0.89 km
- Erquinghem-Lys0.00 km
1 intersecting protected areas
prairies du pont neuf
IUCN IVLand acquired by a regional conservatory of natural areas
1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
2 124 distinct species · 15 879 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 Dérivation des Prés du Hem : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 106 interactions GloBI sur 4 types (connectance 15.9%, filtre Serrano α=0.2). 11 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
3km
Max discharge
28,0m³/s
Max Strahler
4
Segments matched
2
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.