Ruisseau· 6 segments
La Slack
Crosses 1 administrative regions : Pas-de-Calais
Total length
23km
Max discharge
3,1m³/s
Max Strahler
3
Segments matched
6
River geography1 admin regions · 11 communes
1 administrative regions crossed (GADM L2)
- Pas-de-CalaisHauts-de-France · France21.0 kmin this dpt
11 communes (L5)For countries with L5
- Rety6.36 km
- Marquise4.07 km
- Ambleteuse2.98 km
- Rinxent2.18 km
- Hardinghen1.74 km
- Bazinghen1.17 km
- Wimereux1.15 km
- Wierre-Effroy1.08 km
- Wimille0.24 km
- Beuvrequen0.01 km
- Offrethun0.00 km
10 intersecting protected areas
Marine Nature Park
Caps Et Marais D\'Opale
IUCN VRegional Nature Park
Cap Gris-Nez
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Récifs Gris-Nez Blanc-Nez
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Falaises et dunes de Wimereux, estuaire de la Slack, Garennes et Communaux d'Ambleteuse-Audresselles
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Baie de la slack
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
Pré Communal D\'Ambleteuse
IUCN IVBiotope Protection Order
Pré Communal D\'Ambleteuse
IUCN IVRegional Nature Reserve
petit pre de la slack
IUCN IVLand acquired by a regional conservatory of natural areas
1 more protected areassorted by area
Dunes de la manchue
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 125 distinct species · 22 738 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 La Slack : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 129 interactions GloBI sur 6 types (connectance 19.4%, filtre Serrano α=0.2). 13 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
23km
Max discharge
3,1m³/s
Max Strahler
3
Segments matched
6
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.