Rivière· 4 segments
Afon Cwm-lechan
Crosses 1 administrative regions : NA
Total length
6km
Max discharge
14,6m³/s
Max Strahler
4
Segments matched
4
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- NAWales · United Kingdom5.1 kmin this dpt
6 intersecting protected areas
Eryri
IUCN VNational Park
Pen Llŷn a`r Sarnau/ Lleyn Peninsula and the Sarnau
IUCN Not ReportedEmerald Network
Pen Llyn a`r Sarnau / Lleyn Peninsula and the Sarnau
IUCN Not ReportedMarine Protected Area (OSPAR)
Emerald Network
Site of Special Scientific Interest
Mawddach Woodlands
IUCN IVNature Reserve
1 page = 1 named river (aggregation of 4 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
2 749 distinct species · 21 909 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 Afon Cwm-lechan : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 55 interactions GloBI sur 6 types (connectance 7.8%, filtre Serrano α=0.2). 9 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
6km
Max discharge
14,6m³/s
Max Strahler
4
Segments matched
4
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.