Rivière· 9 segments
River Monnow
Crosses 2 administrative regions : Herefordshire, County of, Monmouthshire
Total length
61km
Max discharge
9,5m³/s
Max Strahler
4
Segments matched
9
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- Herefordshire, County ofEngland · United Kingdom26.3 kmin this dpt
- MonmouthshireWales · United Kingdom22.9 kmin this dpt
7 intersecting protected areas
Bannau Brycheiniog
IUCN VNational Park
Wye Valley
IUCN VArea of Outstanding Natural Beauty
Wye Valley (Wales)
IUCN VArea Of Outstanding Natural Beauty
River Wye/ Afon Gwy
IUCN Not ReportedEmerald Network
Black Mountains
IUCN IVSite of Special Scientific Interest
Site of Special Scientific Interest
Gaer House Woods
IUCN IVSite of Special Scientific Interest
1 page = 1 named river (aggregation of 9 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 261 distinct species · 3 713 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 River Monnow : 35 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 85 interactions GloBI sur 5 types (connectance 8.6%, filtre Serrano α=0.2). 10 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
61km
Max discharge
9,5m³/s
Max Strahler
4
Segments matched
9
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.